Report Cards

The American Lung Association State of the Air report issues an annual report card for all cities and counties where air quality data is collected on ozone and particle pollution.

The American Lung Association "State of the Air 2021" report ranks cities and grades counties based on ozone and particle pollution during 2017, 2018 and 2019. For particle pollution, we rank separately the areas with high year-round (annual average) levels and high short-term levels (24-hour) found in monitoring sites across the United States. We take official data from the U.S. Environmental Protection Agency (EPA) to compile the results. For more information about how we rank and grade cities and counties, go to Methodology.

Join Laura Dern's Team!
Join Laura Dern's Team, | Jun 20, 2021
Radnor Run
Radnor, PA | Oct 31, 2021