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10 Most Polluted Cities in the U.S.

April 28, 2011

Here are the ten most polluted cities in the nation:

#1: Bakersfield-Delano, CA
#2: Phoenix-Mesa-Glendale, AZ
#3: Los Angeles-Long Beach-Riverside, CA
#4: Visalia-Porterville, CA
#5: Hanford-Corcoran, CA
#6: Fresno-Madera, CA
#7: Pittsburgh-New Castle, PA
#8: Birmingham-Hoover-Cullman, AL
#9: Cincinnati-Middletown-Wilmington, OH-KY-IN
#10: Louisville-Jefferson County-Elizabethtown-Scottsburg, KY-IN

Source: Treehugger, BC Merchant

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