Air Quality

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Understanding Air Quality Health Advisories

Air Quality Health Advisories can be used to inform people about what they should do to protect themselves from harmful air pollutants.

The Environmental Protection Agency (EPA) uses the U.S. Air Quality Index (AQI) for reporting air quality. 

Air Quality Resources



Air Quality Health Advisory Levels

GoodGood
moderateModerate
unhealthy sg 2Unhealthy for Sensitive Groups
unhealthy 2Unhealthy
vunhealthy 2Very Unhealthy
hazardous 2Hazardous