An official website of the United States government.

Outdoor Air Quality Data

Air Data - Ozone Exceedances

How does this year compare with previous years? Compare 8-hour ozone exceedances between two years or multi-year periods for a city or county. The first plot shows the comparisons by MONTH. The second plot shows the comparisons by DAY based on cumulative counts. The third plot shows the comparisons by YEAR.


  1.     -- or --
  2. To:
  3. To:

 
 
 

Top of Page