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Clean air goes up in smoke with California fires

August 02, 2018
Jorge L. Ortiz, USA TODAY Clean air goes up in smoke with California fires

The EPA calculates a daily Air Quality Index based on five major pollutants regulated by the Clean Air Act: ground-level ozone, particle pollution (also known as particulate matter), carbon monoxide, sulfur dioxide, and nitrogen dioxide.

     
 
 

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August 01, 2018 at 05:31PM
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