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Outdoor Air Quality Data
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Air Quality Index Report

This report provides Air Quality Index annual summary information, including maximum AQI values and the count of days in each AQI category. Read more about what's in this report.

Use the query tool below to get AQI reports for one state, county, or CBSA at a time. Click this link if you want a national file that lists all counties or CBSAs.


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Last updated on November 22, 2022
United States Environmental Protection Agency

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