U.S. EPA Air Quality Data

The AirData Air Quality Index Summary Report displays an annual summary of Air Quality Index (AQI) values for counties or core based statistical areas (CBSA). Air Quality Index is an indicator of overall air quality, because it takes into account all of the criteria air pollutants measured within a geographic area. Although AQI includes all available pollutant measurements, you should be aware that many areas have monitoring stations for some, but not all, of the pollutants. This data is available at the county level, but SAVI now uses other EPA sources for smaller geographies. We no longer update this data set.

Percent of Days Where Air Quality was Reported as Good, Percent of Days Where the Main Criteria Pollutant was Reported as Ozone, Median Air Quality Index Value

Data is available in SAVI for this area:

Data is available in SAVI at these geographic levels:

Data is available in SAVI for these years: