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We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Outdoor Air Quality Data

Air Quality Index Daily Values Report

This report provides daily Air Quality Index values for the specified year and location. Read more about what's in this report.

Use the query tool below to get AQI data for one 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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