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

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

23 datasets found
  • Federal

    Web page with Air Quality System (AQS) ambient observation files

    U.S. Environmental Protection Agency —

    Ambient concentrations of most requested pollutants from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).
  • Federal

    Community Multi-scale Air Quality (CMAQ) Model Outputs

    U.S. Environmental Protection Agency —

    The CMAQ Model Outputs data asset includes current and projected future levels of ambient concentrations and deposition to support regulatory impact analyses.
  • Federal

    Aerosol Mass Spectrometry Data

    U.S. Environmental Protection Agency —

    Data was provided by EPA from an air quality model (the Community Multiscale Air Quality or "CMAQ" model) that predicts surface level atmospheric concentrations of...
23 datasets found

You can also access this registry using the API (see API Docs).

Didn't find what you're looking for? Suggest a dataset here.