Top 5 Most Polluted Cities in the US. These are the 5 most polluted city ( cluster of cities ) in the US. Levels of toxic in the air and water reach dangerous levels in these cities.
5. Modesto, California
Modesto is one of the most polluted cities in the San Joaquin Valley. Hemmed in by mountains and rarely having strong winds to disperse smog, the San Joaquin Valley has long suffered from some of the United States' worst air pollution. This pollution comes mainly from diesel and gasoline fueled vehicles and agricultural operations.
4. Los Angeles-Long Beach, California
Long Beach suffers from some of the worst air pollution in the entire United States. With diesel exhaust from ships, trains, and trucks as the largest sources. The water quality in the Long Beach portion of San Pedro Bay commonly ranks among the poorest on the entire West Coast.
3. Bakersfield, California
The American Lung Association ranked Bakersfield as the most ozone-polluted city in the nation in 2006. It was also ranked as the second-most polluted city in terms of both short-term and year-round particle pollution. In 2013, when measured by atmospheric particulate matter, Bakersfield was listed as having the worst air in the United States.
2. Visalia-Porterville-Hanford, California
With only 600,000 people, the combined Visalia-Porterville-Hanford area ranks second in all three State of the Air pollution indicators. This combined region might soon be the most polluted in America overall.
1. Fresno-Madera, California
Nearly a quarter of the greater Fresno-Madera population suffers from some sort of cardiovascular disease, which can be connected to air pollution. Rapid population growth over the past decade has intensified the problem. Good luck to all our viewers living in California!