10 Shocking Facts On The Worst Air Polluted Cities In The US

If a city in the United States is known for factory production that releases a lot of pollutants in the air, the area could be unsafe for children and elderly adults to live in. An increased effort in finding out how bad air pollutants are each day helps people to decide how long and when they should be outside. A number of the worst cities in the US fall in the central region of California, but there are other notable cities big and small that deals with these issues. Here are some of the most interesting facts about these cities that struggle keeping their air healthy.

Pittsburgh, Pennsylvania

A place famous for processing coal and steel would be expected to have lots of air pollution. Surrounding counties are improving and some receiving high grades, but Allegheny County is one of the most constantly failing-graded areas in terms of air quality. Pittsburgh is ninth worst city in America by year-round particle pollution.


Louisville, Kentucky

Due to the many hills that surround the area, particles in the air can get trapped. It worsens when the Ohio Valley air becomes stagnant. At times, it can have the worst air pollution in the nation, especially in the summer months. Currently, Louisville is the 15th worst by year-round particle pollution.

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