"Monroe, LA. #33..."
The American Lung Association monitors air pollution at numerous field offices. They post their "State of the Air Report" each year, identifing ozone levels and particle pollutants throughout the United States. By example, the Assocation has given Baton Rouge a "passing grade" for annual particle pollutants, a "B" for particle pollution and an "F" for ozone. Los Angeles tops the list for the worst ozone in the country which inlcudes the Bakersfield area. The state of California posts nine out of 25 American cities with the most ozone. Other cities include Birmingham and Cincinnatti in the 14th position and Beaumont, Texas at number 20. The cleanest cities include Ames, Iowa at number one, Dothan, Alabama at 16, Muscle Shoals, Alabama at 20 and Monroe, Louisiana at number 33.