Not only is Los Angeles, California is filled with cultural diversity it is also filled with pollutions. Los Angeles is the #1 most polluted city in the United States. Los Angeles ranked as the most polluted city in the nation for all categories in the report, even though LA's pollution levels have dropped considerably over the past few years. According to the American Lung Association it is the particle pollution levels show an ominous trend and continue to make LA the most polluted city even after vast improvements have been made.
Bakersfield, California is the #2 most polluted city in the United States. The city again in California has the levels of particle pollution to blame for its rank on the pollution scale. In addition to the particle pollution, Bakersfield has also been said to be the most ozone polluted city in the United States. Strides are being taken to improve their ranking on the list.