Smog has been a persistent problem for years in Bakersfield, where over 60,000 residents have asthma, and where ozone air quality is considered unhealthy or worse for nearly two-thirds of the year. But there is good news—air pollution has improved over the past decade even as the population has increased.
The 10 Most Polluted Cities in America
Bakersfield, Merced and Fresno top the American Lung Association's list of cities with the most persistant air pollution in the country in 2013
#1 (tie): Bakersfield, CA
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10 U.S. Cities With The Dirtiest Air