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Air Trends provides geographic trend information for specific air pollutants. There are links to two types of summaries provided on this page - air quality trends and air quality design values....
Search relevance: 113.63 | Views last month: 2 | Catalog Last Checked: July 09, 2026 at 12:46 PM -
The Historical Ambient Air Quality Data Inventory contains measured and estimated data on ambient air pollution for use in assessing air quality, assisting in designating attainment/non-attainment...
Search relevance: 105.72 | Views last month: 4 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
The Air Quality System (AQS) database contains measurements of air pollutant concentrations from throughout the United States and its territories. The measurements include both criteria air...
Search relevance: 105.62 | Views last month: 53 | Catalog Last Checked: July 15, 2026 at 02:05 PM -
This data exchange allows states to submit data to the US Environmental Protection Agency's National Emissions Inventory (NEI). NEI is a national database of air emissions information including...
Search relevance: 104.74 | Views last month: 4 | Catalog Last Checked: July 15, 2026 at 02:05 PM -
Ambient concentrations of most requested pollutants from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).
Search relevance: 102.81 | Views last month: 0 | Catalog Last Checked: July 07, 2026 at 11:39 AM -
This RadNet Air Quality Data Asset includes all historical data (prior to 2005, when ERAMS was expanded to become RadNet, name changed to reflect new mission)
Search relevance: 102.59 | Views last month: 0 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
Annual air trends report in the form of an interactive web application. The report features a suite of visualization tools that allow the user to: -Learn about air pollution and how it can affect...
Search relevance: 102.03 | Views last month: 6 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
8-hour daily maximum ozone concentrations as measured by the Clean Air Status and Trends Network (CASTNET)
Search relevance: 101.84 | Views last month: 6 | Catalog Last Checked: July 15, 2026 at 02:05 PM -
Ambient ozone concentrations for 2007 from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).
Search relevance: 101.31 | Views last month: 4 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
This asset provides data on regional air quality, including trace level SO2, nitric acid, ozone, carbon monoxide, and NOy; and particulate sulfate, nitrate, and ammonium from 1989 to present....
Search relevance: 100.24 | Views last month: 30 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
The Clean Air Markets Program Data (CAMPD) application, accessible at https://campd.epa.gov/, allows users to view Clean Air Markets data through the Custom Data Download Tool and Bulk Data Files....
Search relevance: 99.83 | Views last month: 7 | Catalog Last Checked: July 08, 2026 at 12:07 PM -
A web page that describes and links to EPA systems for accessing and downloading ambient (outdoor) air quality and emissions data
Search relevance: 98.72 | Views last month: 1 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria pollutant CARBON MONOXIDE. A...
Search relevance: 98.67 | Views last month: 12 | Catalog Last Checked: May 05, 2026 at 07:55 PM -
This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria pollutant PM10 (particulate...
Search relevance: 98.66 | Views last month: 8 | Catalog Last Checked: May 05, 2026 at 07:55 PM -
RadNet is a national network of monitoring stations that regularly collect air for analysis of radioactivity. The RadNet network, which has stations in each State, has been used to track...
Search relevance: 97.57 | Views last month: 1 | Catalog Last Checked: May 01, 2026 at 06:06 PM -
This map service contains participants in EPA's Air Quality Flags Program. The map service also includes the current day's AQI forecast for each participant in the program. The Air Quality Flag...
Search relevance: 97.41 | Views last month: 4 | Catalog Last Checked: May 06, 2026 at 12:31 AM -
A REST web service API allowing the retrieval of real time air quality index data from AirNow.
Search relevance: 97.05 | Views last month: 56 | Catalog Last Checked: July 09, 2026 at 12:46 PM -
This research project focused on evaluation of air transfer between the garage and living space in a single-family detached home constructed by a production homebuilder in compliance with the 2009...
Search relevance: 95.94 | Views last month: 1 | Catalog Last Checked: March 23, 2026 at 09:38 PM -
This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria pollutant OZONE. A criteria...
Search relevance: 95.50 | Views last month: 20 | Catalog Last Checked: May 05, 2026 at 07:55 PM -
This web service contains a polygon layer that depicts fused air quality predictions for 2012, 2013, and 2014 for census tracts in the conterminous United States. Fused air quality predictions...
Search relevance: 94.69 | Views last month: 4 | Catalog Last Checked: May 06, 2026 at 12:32 AM
