Air pollutants are declining in the U.S.

According to the U.S. EPA: emissions of key air pollutants continue to decline from 1990 levels.

The Air Quality Index is an  index of daily air pollution levels showing steep improvements in air quality. Fewer unhealthy air quality days means better health, longevity, and quality of life for all of us.

 

Source(s): OUR NATION'S AIR TRENDS THROUGH 2020

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