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U.S. air quality is improving, but 1 in 3 Americans still breathe unhealthy air
U.S. air quality is improving, but 1 in 3 Americans still breathe unhealthy air,The American Lung Association finds that U.S. air quality is improving, but wildfires, drought, and inequality threaten progress.

U.S. air quality is improving, but 1 in 3 Americans still breathe unhealthy air

The American Lung Association finds that U.S. air quality is improving, but wildfires, drought, and inequality threaten progress.