America's most polluted cities

POSTED: 11:51 AM PDT Nov 04, 2011    UPDATED: 11:26 AM PDT Apr 20, 2016 

Just how dirty is the air you breathe? The American Lung Association has released its latest list of the most polluted U.S. cities.

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David McNew/Getty Images

Just how dirty is the air you breathe? The American Lung Association just released its 2016 "State of the Air" report of the most polluted cities in the U.S. Here are the 20 cities most polluted by year-round particle pollution:

 
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