Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Datasets

  • Regional Air Quality Data

    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...

  • AirNow

    AirNow is a collaboration between EPA, and othe federal, state and local agencies to provide complete and real-time air quality information.

  • KMZ file of EPA Ambient Ozone Monitors

    A KMZ file with the location of all the EPA ambient ozone monitors with the ability to download data from within the description box.

  • Air Quality System (AQS) ambient observations: 2008 Lead

    Ambient Lead (Pb) concentrations from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).

  • Air Quality System (AQS) ambient observations: 2008 PM2.5

    Ambient PM2.5 (particulate matter less than 2.5 microns) concentrations from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).

  • Air Quality System (AQS) ambient observations: 2008 ozone

    Ambient ozone concentrations for 2008 from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).

  • Air Quality System (AQS) ambient observations: 2007 PM2.5

    Ambient PM2.5 (particulate matter less than 2.5 microns) concentrations from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).

  • KMZ files of EPA Ambient Monitors

    KMZ files with the location of all the EPA ambient monitors with the ability to download data from within the description box.

  • AirData AQS REST API

    A REST web service API allowing the retrieval of historical air quality data from EPA.

  • AirCompare

    AirCompare contains air quality information that allows a user to compare conditions in different localities over time and compare conditions in the same location at different...

  • AirData

    The AirData site provides access to yearly summaries of United States air pollution data, taken from EPA's air pollution databases. AirData has information about where air...

  • RACT/BACT/LAER Clearninghouse (RBLC)

    OAR's RACT, BACT, LAER Clearinghouse (RBLC) data asset contains summary information on selected air permitting actions from EPA, state, and local permitting agencies across the...

  • Air Emissions Where You Live KMZ File

    A KMZ file with the location of all major facilities that emit pollutants into the atmopshere.

  • www.FuelEconomy.gov

    FuelEconomy.gov provides comprehensive information about vehicles' fuel economy. The official U.S. government site for fuel economy information, it is operated by the Department...

  • Ambient Air Quality Data Inventory

    The Office of Air and Radiation's (OAR) Ambient Air Quality Data (Current) contains ambient air pollution data collected by EPA, other federal agencies, as well as state, local,...

  • WebFIRE

    The Factor Information Retrieval (FIRE) Data System is a database management system containing EPA's recommended emission estimation factors for criteria and hazardous air...

  • RACT_BACT_LAER Clearinghouse (RBLC)

    OAR's RACT, BACT, LAER Clearinghouse (RBLC) data asset contains summary information on selected air permitting actions from EPA, state, and local permitting agencies across the...

  • National Emission Inventory

    The National Emission Inventory contains measured, modeled, and estimated data for emissions of all known source categories in the US (stationary sources, fires, light duty...

  • Air Quality System (AQS)

    The Air Quality System (AQS) database contains measurements of air pollutant concentrations from throughout the United States and its territories. The measurements include both...

  • Web page with links to air quality and emissions data

    A web page that describes and links to EPA systems for accessing and downloading ambient (outdoor) air quality and emissions data