An official website of the United States government.
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.
Note: The AirNow website is experiencing extremely heavy traffic and may be slow. If you are unable to access the site, please visit: https://www.epa.gov/pm-pollution/fires-and-your-health to get additional information on protecting your health from wildfire smoke.
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