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Air Data: Air Quality Data Collected at Outdoor Monitors Across the US

  • Outdoor Air Quality Data

    Use the tools on this site to access recent and historical data.

    For current air quality, visit AirNow.gov.

    During fire events, use the Fire and Smoke map.

  • Visualize Trends

    The multiyear tile plot shows long-term changes in air quality.

  • Daily Air Quality Tracker

    The daily air quality tracker lets you compare recent AQI values with historical data.

Download Data

  • Pre-generated Data Files
  • Download Daily Data
  • Download Raw Data (API)

Monitor Locations

  • Interactive Map of Air Quality Monitors

About Air Data

  • Basic Information
  • Frequent Questions
  • Subscribe to RSS feed

Data Viz Tools

  • Daily Air Quality Tracker
  • Tile Plot - Multiyear
  • Tile Plot - Single Year
  • AQI Plot
  • Concentration Plot
  • Concentration Map
  • Ozone Exceedances

Summary Reports

  • Air Quality Index Report
  • Air Quality Statistics Report
  • Monitor Values Report
  • Monitor Values Report - Hazardous Air Pollutants
  • Air Quality Index Daily Values Report

Technical Reports

  • PM2.5 Continuous Monitor Comparability Assessments
  • PM10 Continuous Monitor Comparability Assessments
  • Single Point Precision and Bias Report
  • Additional Air Monitoring Assessments
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on October 13, 2022
United States Environmental Protection Agency

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