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.

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Last updated on March 20, 2025