Yes, big improvements in air quality have been made over the last several decades. However, there is still some foul air out there, and most of it can be found in California. According to the American Lung Association’s State of the Air Report for 2013, of the top 10 areas in the U.S. with the worst air, only 2 were not in California. That dubious distinction goes to Cincinnati-Middletown-Wilmington, Ohio-Ky.-Ind. metropolis and Pittsburgh-New Castle, Pa.
The list stands for itself:
#1: Bakersfield-Delano, CA
#1: Merced, CA
#3: Fresno-Madera, CA
#4: Hanford-Corcoran, CA
#4: Los Angeles-Long Beach-Riverside, CA
#6: Modesto, CA
#7: Visalia-Porterville, CA
#8: Pittsburgh-New Castle, PA
#9: El Centro, CA
#10: Cincinnati-Middletown-Wilmington, OH-KY-IN
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