# Environmental Health and Toxicology This page contains all datasets in the **Environmental Health & Toxicology** category of the CDC Open Data Catalog. **Total Datasets in Category**: 29 **Last Updated**: 5/24/2026 ## Datasets in this Category * [Air Quality Measures on the National Environmental Health Tracking Network](#air-quality-measures-on-the-national-environmental-health-tracking-network) * [Daily Census Tract-Level Ozone Concentrations 2021 - 2022](#daily-census-tract-level-ozone-concentrations-2021-2022) * [Daily Census Tract-Level Ozone Concentrations, 2001-2005](#daily-census-tract-level-ozone-concentrations-2001-2005) * [Daily Census Tract-Level Ozone Concentrations, 2001-2005](#daily-census-tract-level-ozone-concentrations-2001-2005) * [Daily Census Tract-Level Ozone Concentrations, 2006-2010](#daily-census-tract-level-ozone-concentrations-2006-2010) * [Daily Census Tract-Level Ozone Concentrations, 2011-2014](#daily-census-tract-level-ozone-concentrations-2011-2014) * [Daily Census Tract-Level Ozone Concentrations, 2011-2015](#daily-census-tract-level-ozone-concentrations-2011-2015) * [Daily Census Tract-Level Ozone Concentrations, 2016 - 2020](#daily-census-tract-level-ozone-concentrations-2016-2020) * [Daily Census Tract-Level PM2.5 Concentrations, 2001-2005](#daily-census-tract-level-pm25-concentrations-2001-2005) * [Daily Census Tract-Level PM2.5 Concentrations, 2001-2005](#daily-census-tract-level-pm25-concentrations-2001-2005) * [Daily Census Tract-Level PM2.5 Concentrations, 2006-2010](#daily-census-tract-level-pm25-concentrations-2006-2010) * [Daily Census Tract-Level PM2.5 Concentrations, 2006-2010](#daily-census-tract-level-pm25-concentrations-2006-2010) * [Daily Census Tract-Level PM2.5 Concentrations, 2011-2014](#daily-census-tract-level-pm25-concentrations-2011-2014) * [Daily Census Tract-Level PM2.5 Concentrations, 2011-2015](#daily-census-tract-level-pm25-concentrations-2011-2015) * [Daily Census Tract-Level PM2.5 Concentrations, 2016 - 2020](#daily-census-tract-level-pm25-concentrations-2016-2020) * [Daily Census Tract-Level PM2.5 Concentrations, 2021- 2022](#daily-census-tract-level-pm25-concentrations-2021-2022) * [Daily County-Level Ozone Concentrations 2001-2022](#daily-county-level-ozone-concentrations-2001-2022) * [Daily County-Level Ozone Concentrations, 2001-2019](#daily-county-level-ozone-concentrations-2001-2019) * [Daily County-Level PM2.5 Concentrations 2001-2022](#daily-county-level-pm25-concentrations-2001-2022) * [Daily County-Level PM2.5 Concentrations, 2001-2014](#daily-county-level-pm25-concentrations-2001-2014) * [Daily County-Level PM2.5 Concentrations, 2001-2019](#daily-county-level-pm25-concentrations-2001-2019) * [Outbreak Data - Restaurant Grading](#outbreak-data-restaurant-grading) * [Palmer Drought Severity Index, 1895-2016](#palmer-drought-severity-index-1895-2016) * [Population-Weighted Global Horizontal Irradiance, 1991-2012](#population-weighted-global-horizontal-irradiance-1991-2012) * [Population-Weighted Ultraviolet Irradiance, 2004-2015](#population-weighted-ultraviolet-irradiance-2004-2015) * [Standardized Precipitation Evapotranspiration Index, 1895-2016](#standardized-precipitation-evapotranspiration-index-1895-2016) * [Standardized Precipitation Index, 1895-2016](#standardized-precipitation-index-1895-2016) * [Survey Data - Restaurant Grading](#survey-data-restaurant-grading) * [United States Drought Monitor, 2000-2016](#united-states-drought-monitor-2000-2016) *** #### Air Quality Measures on the National Environmental Health Tracking Network * **Description**: The Environmental Protection Agency (EPA) provides air pollution data about ozone and particulate matter (PM2.5) to CDC for the Tracking Network. The EPA maintains a database called the Air Quality System (AQS) which contains data from approximately 4,000 monitoring stations around the country, mainly in urban areas. Data from the AQS is considered the "gold standard" for determining outdoor air pollution. However, AQS data are limited because the monitoring stations are usually in urban areas or cities and because they only take air samples for some air pollutants every three days or during times of the year when air pollution is very high. CDC and EPA have worked together to develop a statistical model (Downscaler) to make modeled predictions available for environmental public health tracking purposes in areas of the country that do not have monitors and to fill in the time gaps when monitors may not be recording data. This data does not include "Percent of population in counties exceeding NAAQS (vs. population in counties that either meet the standard or do not monitor PM2.5)". Please visit the Tracking homepage for this information.View additional information for indicator definitions and documentation by selecting Content Area "Air Quality" and the respective indicator at the following website: * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: air\_quality\_measures\_neht\_network\_\_cjae\_szjv * **Dataset ID**: cjae-szjv * **Category**: Environmental Health & Toxicology * **Total Rows**: 218,635 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, air quality, air quality index, air quality system, caa 109: clean air act section 109 * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations 2021 - 2022 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2021-2022. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Census tract-level concentration data are available in 5-year periods due to size constraints. This dataset and file will be updated until it is complete to cover 2021-2025. Earlier periods of census-tract data can be found on data.cdc.gov through the search function. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_ozone\_concs\_2021\_202\_\_b72x\_p96c * **Dataset ID**: b72x-p96c * **Category**: Environmental Health & Toxicology * **Total Rows**: 61,156,480 * **Last Refresh**: 4/14/2026 * **Total Batches**: 1 * **Tags**: national ambient air quality standards, asthma, environmental health, air quality, ozone, national environmental health tracking network, air pollution * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations, 2001-2005 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2001-2005. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_ozone\_concentrations\_\_v76h\_zdce * **Dataset ID**: v76h-zdce * **Category**: Environmental Health & Toxicology * **Total Rows**: 129,600,000 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, ozone * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations, 2001-2005 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2001-2005. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_ozone\_concs\_2001\_200\_\_d3c4\_tq79 * **Dataset ID**: d3c4-tq79 * **Category**: Environmental Health & Toxicology * **Total Rows**: 65,800,000 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, ozone * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations, 2006-2010 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2006-2010. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_ozone\_concs\_2006\_201\_\_xm94\_zmtx * **Dataset ID**: xm94-zmtx * **Category**: Environmental Health & Toxicology * **Total Rows**: 11,900,000 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, ozone * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations, 2011-2014 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2011-2014. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_ozone\_concs\_2011\_2014\_\_372p\_dx3h * **Dataset ID**: 372p-dx3h * **Category**: Environmental Health & Toxicology * **Total Rows**: 105,605,463 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, ozone * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations, 2011-2015 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2001-2005. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_ozone\_concs\_2011\_201\_\_847z\_pxin * **Dataset ID**: 847z-pxin * **Category**: Environmental Health & Toxicology * **Total Rows**: 76,800,000 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, ozone * **Source Data**: #### Daily Census Tract-Level Ozone Concentrations, 2016 - 2020 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. Data are at the census tract level for 2016-2020. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network.Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_ozone\_concs\_2016\_20\_ere\_s\_\_\_hf2a\_3ebq * **Dataset ID**: hf2a-3ebq * **Category**: Environmental Health & Toxicology * **Total Rows**: 136,267,479 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, air quality, asthma, environmental health, national ambient air quality standards * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2001-2005 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2001-2005. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_pm25\_concentrations\_\_\_v5qq\_ktfc * **Dataset ID**: v5qq-ktfc * **Category**: Environmental Health & Toxicology * **Total Rows**: 76,000,000 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter, pm2.5 * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2001-2005 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2001-2005. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_pm25\_concentrations\_\_\_s5vm\_cztk * **Dataset ID**: s5vm-cztk * **Category**: Environmental Health & Toxicology * **Total Rows**: 131,988,758 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter, pm2.5 * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2006-2010 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2006-2010. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_pm25\_concentrations\_\_\_ujra\_cbx5 * **Dataset ID**: ujra-cbx5 * **Category**: Environmental Health & Toxicology * **Total Rows**: 131,988,756 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter, pm2.5 * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2006-2010 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2006-2010. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_pm25\_concs\_ere\_s\_the\_break\_\_fpqb\_s69d * **Dataset ID**: fpqb-s69d * **Category**: Environmental Health & Toxicology * **Total Rows**: 131,988,757 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter, pm2.5 * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2011-2014 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2011-2014. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_pm25\_concentrations\_remove\_\_fcqm\_xrf4 * **Dataset ID**: fcqm-xrf4 * **Category**: Environmental Health & Toxicology * **Total Rows**: 105,605,463 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter, pm2.5 * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2011-2015 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2011-2015. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_pm25\_concentrations\_\_\_qjxm\_7fny * **Dataset ID**: qjxm-7fny * **Category**: Environmental Health & Toxicology * **Total Rows**: 72,300,000 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter, pm2.5 * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2016 - 2020 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2016-2020. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_pm25\_concentrations\_ere\_s\_\_\_96sd\_hxdt * **Dataset ID**: 96sd-hxdt * **Category**: Environmental Health & Toxicology * **Total Rows**: 66,000,000 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, air quality, asthma, environmental health, national ambient air quality standards * **Source Data**: #### Daily Census Tract-Level PM2.5 Concentrations, 2021- 2022 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the census tract level for 2021-2022. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Census tract-level concentration data are available in 5-year periods due to size constraints. This dataset and file will be updated until it is complete to cover 2021-2025. Earlier periods of census-tract data can be found on data.cdc.gov through the search function. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_census\_tract\_pm25\_concentrations\_\_\_vpk8\_vfhm * **Dataset ID**: vpk8-vfhm * **Category**: Environmental Health & Toxicology * **Total Rows**: 61,156,480 * **Last Refresh**: 4/14/2026 * **Total Batches**: 1 * **Tags**: national ambient air quality standards, pm2.5, particulate matter, national environmental health tracking network, environmental health, asthma, air quality, air pollution * **Source Data**: #### Daily County-Level Ozone Concentrations 2001-2022 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Data are at the county level for 2001-2022. The dataset includes the maximum, median, mean, and population-weighted mean concentration. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_county\_ozone\_concentrations\_2001\_\_\_3vxk\_q2jk * **Dataset ID**: 3vxk-q2jk * **Category**: Environmental Health & Toxicology * **Total Rows**: 24,923,825 * **Last Refresh**: 4/14/2026 * **Total Batches**: 1 * **Tags**: ozone, national environmental health tracking network, national ambient air quality standards, environmental health, asthma, air quality, air pollution * **Source Data**: #### Daily County-Level Ozone Concentrations, 2001-2019 * **Description**: This dataset provides modeled predictions of ozone levels from the EPA's Downscaler model. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Data are at the county levels for 2001-2014. The dataset includes the maximum, median, mean, and population-weighted mean concentration. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_county\_ozone\_concs\_ere\_s\_the\_brea\_\_jcn4\_jcv5 * **Dataset ID**: jcn4-jcv5 * **Category**: Environmental Health & Toxicology * **Total Rows**: 4,539,327 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, air quality, • asthma, environmental health, national ambient air quality standards * **Source Data**: #### Daily County-Level PM2.5 Concentrations 2001-2022 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the county level for 2001-2022. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_county\_pm25\_concentrations\_2001\_2\_\_53mz\_4zqd * **Dataset ID**: 53mz-4zqd * **Category**: Environmental Health & Toxicology * **Total Rows**: 24,923,825 * **Last Refresh**: 4/14/2026 * **Total Batches**: 1 * **Tags**: pm2.5, asthma, particulate matter, national ambient air quality standards, environmental health, national environmental health tracking network, air pollution, air quality * **Source Data**: #### Daily County-Level PM2.5 Concentrations, 2001-2014 * **Description**: This dataset provides modeled predictions of particulate matter (PM2.5) levels from the EPA's Downscaler model. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Data are at the county levels for 2001-2014. The dataset includes the maximum, median, mean, and population-weighted mean concentration. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_county\_pm25\_concentrations\_2001\_2\_\_qjju\_smys * **Dataset ID**: qjju-smys * **Category**: Environmental Health & Toxicology * **Total Rows**: 15,896,317 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: air pollution, asthma, environmental health, particulate matter * **Source Data**: #### Daily County-Level PM2.5 Concentrations, 2001-2019 * **Description**: This dataset provides modeled predictions of PM2.5 levels from the EPA's Downscaler model. Data are at the county level for 2001-2019. These data are used by the CDC's National Environmental Public Health Tracking Network to generate air quality measures. Census tract-level datasets contain estimates of the mean predicted concentration and associated standard error. Please refer to the metadata attachment for more information. Learn more about outdoor air quality on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: daily\_county\_pm25\_concentrations\_his\_id\_\_dqwm\_pbi7 * **Dataset ID**: dqwm-pbi7 * **Category**: Environmental Health & Toxicology * **Total Rows**: 4,539,327 * **Last Refresh**: 7/1/2025 * **Total Batches**: 1 * **Tags**: air pollution, air quality, asthma, environmental health, national ambient air quality standards * **Source Data**: #### Outbreak Data - Restaurant Grading * **Description**: Outbreak Data - Restaurant Grading * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: outbreak\_data\_restaurant\_grading\_\_iyx3\_z4r8 * **Dataset ID**: iyx3-z4r8 * **Category**: Environmental Health & Toxicology * **Total Rows**: 545 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: food safety, restaurant grading * **Source Data**: #### Palmer Drought Severity Index, 1895-2016 * **Description**: This dataset provides data at the county level for the contiguous United States. It includes monthly Palmer Drought Severity Index (PDSI) data from 1895-2016 provided by the Cooperative Institute for Climate and Satellites - North Carolina. Please refer to the metadata attachment for more information. Learn more about drought on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: palmer\_drought\_index\_1895\_2016\_have\_con\_\_en5r\_5ds4 * **Dataset ID**: en5r-5ds4 * **Category**: Environmental Health & Toxicology * **Total Rows**: 4,551,576 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: drought, environmental health * **Source Data**: #### Population-Weighted Global Horizontal Irradiance, 1991-2012 * **Description**: This dataset provides data at the county level for the contiguous United States. It includes daily Global Horizontal Irradiance (GHI) data from 1991-2012 provided by the Environmental Remote Sensing group at the Rollins School of Public Health at Emory University. Please refer to the metadata attachment for more information. These data are used by the CDC's National Environmental Public Health Tracking Network to generate sunlight and ultraviolet (UV) measures. Learn more about sunlight and UV on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: population\_weighted\_global\_horizontal\_i\_\_fdyw\_m38t * **Dataset ID**: fdyw-m38t * **Category**: Environmental Health & Toxicology * **Total Rows**: 24,983,924 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: environmental health, skin cancer, sunlight, total solar irradiance * **Source Data**: #### Population-Weighted Ultraviolet Irradiance, 2004-2015 * **Description**: This dataset provides data at the county level for the contiguous United States. It includes daily Ozone Monitoring Instrument (OMI) Population-Weighted Ultraviolet (UV) irradiance data from October 2004-2015 provided by the Environmental Remote Sensing group at the Rollins School of Public Health at Emory University. Please refer to the metadata attachment for more information. These data are used by the CDC's National Environmental Public Health Tracking Network to generate sunlight and UV measures. Learn more about sunlight and UV on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: population\_weighted\_uv\_irradiance\_2004\_\_\_h28b\_t43q * **Dataset ID**: h28b-t43q * **Category**: Environmental Health & Toxicology * **Total Rows**: 12,314,749 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: environmental health, skin cancer, solar radiation, ultraviolet * **Source Data**: #### Standardized Precipitation Evapotranspiration Index, 1895-2016 * **Description**: This dataset provides data at the county level for the contiguous United States. It includes monthly Standardized Precipitation Evapotranspiration Index (SPEI) data from 1895-2016 provided by the Cooperative Institute for Climate and Satellites - North Carolina. Please refer to the metadata attachment for more information. These data are used by the CDC's National Environmental Public Health Tracking Network to generate drought measures. Learn more about drought on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: spi\_index\_1895\_2016\_\_6nbv\_ifib * **Dataset ID**: 6nbv-ifib * **Category**: Environmental Health & Toxicology * **Total Rows**: 4,551,576 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: drought, environmental health * **Source Data**: #### Standardized Precipitation Index, 1895-2016 * **Description**: This dataset provides data at the county level for the contiguous United States. It includes monthly Standardized Precipitation Index (SPI) data from 1895-2016 provided by the Cooperative Institute for Climate and Satellites - North Carolina. Please refer to the metadata attachment for more information. Learn more about drought on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: spi\_1895\_2016\_\_xbk2\_5i4e * **Dataset ID**: xbk2-5i4e * **Category**: Environmental Health & Toxicology * **Total Rows**: 4,551,576 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: drought, environmental health * **Source Data**: #### Survey Data - Restaurant Grading * **Description**: Survey Data - Restaurant Grading * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: survey\_data\_restaurant\_grading\_he\_clean\_\_6zuv\_bn3z * **Dataset ID**: 6zuv-bn3z * **Category**: Environmental Health & Toxicology * **Total Rows**: 140 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: food safety, restaurant grading * **Source Data**: #### United States Drought Monitor, 2000-2016 * **Description**: This dataset provides data at the county level for the contiguous United States. It includes weekly United States Drought Monitor (USDM) data from 2000-2016 provided by the Cooperative Institute for Climate and Satellites - North Carolina. Please refer to the metadata attachment for more information. These data are used by the CDC's National Environmental Public Health Tracking Network to generate drought measures. Learn more about drought on the Tracking Network's website: . By using these data, you signify your agreement to comply with the following requirements: 1. Use the data for statistical reporting and analysis only. 2. Do not attempt to learn the identity of any person included in the data and do not combine these data with other data for the purpose of matching records to identify individuals. 3. Do not disclose of or make use of the identity of any person or establishment discovered inadvertently and report the discovery to: . 4. Do not imply or state, either in written or oral form, that interpretations based on the data are those of the original data sources and CDC unless the data user and data source are formally collaborating. 5. Acknowledge, in all reports or presentations based on these data, the original source of the data and CDC. 6. Suggested citation: Centers for Disease Control and Prevention. National Environmental Public Health Tracking Network. Web. Accessed: insert date. [www.cdc.gov/ephtracking](http://www.cdc.gov/ephtracking). Problems or Questions? Email . * **Snowflake Schema**: dwv\_env\_health\_tox * **Databricks Schema**: cdc\_dwv\_env\_health\_tox * **Table Name**: united\_states\_drought\_monitor\_2000\_2016\_\_spsk\_9jj6 * **Dataset ID**: spsk-9jj6 * **Category**: Environmental Health & Toxicology * **Total Rows**: 2,786,067 * **Last Refresh**: 7/12/2025 * **Total Batches**: 1 * **Tags**: drought, environmental health * **Source Data**: --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.dataplex-consulting.com/data-catalog/cdc-open-data-product/cdc-environmental-health-and-toxicology.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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