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Outdoor Air Quality Data

Air Data - Daily Air Quality Tracker

Track the most recent daily AQI values relative to the 20-year high and low and the average of the last five years. 

More information: The most recent AQI values are based on available ozone and PM2.5 data from AirNow (see "Use of AirNow Data" info box).  The 20-year high/low backdrop is based on AQS data from 2000-2019.  It shows the range of the highest and lowest daily max AQI values on each date.  The 5-year average is based on AQS data from 2015-2019.  It  shows the average of daily max AQI values on each date.


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