The American Lung Association’s new “State of the Air” report grades Americans’ exposure to unhealthy levels of ground-level ozone air pollution, annual particle pollution and short-term spikes in particle pollution over three years. This year’s report covers 2019-2021.

The cities on the lists of the cleanest for ozone and short-term particle pollution are not ranked because all the cities earned the same scores. To find out how your city measures up regarding air pollution, click here.