America's most polluted cities

Published On: Nov 04 2011 01:51:22 PM CDT   Updated On: Apr 20 2016 01:26:11 PM CDT

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

Most Polluted - Visalia
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VISALIA2010/Wikipedia

2. Visalia-Porterville-Hanford, California

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