If you're finding it a little harder to breathe, it could be because Cleveland ranks high in the Top Ten Most Polluted Cities.
Cleveland ranked at No. 6 on the list while Cincinnati ranked at No. 8. Steubenville and Canton areas also ranked in the top 25.
The American Lung Association study measured air pollution from 2003 to 2005. It based the rankings on ozone pollution levels produced when heat and sunlight come into contact with pollutants from power plants, cars, and other sources.
Other cities on the list include Pittsburgh, Indianapolis and St. Louis.
The Lung Association said higher pollution levels can contribute to asthma attacks, lung cancer and heart disease. The big culprit is car traffic. But filling up your car after dark and waiting until late in the day to cut the grass can also help keep pollution levels down.
Top 25 Most Polluted Cities:
1: Los Angeles-Long Beach-Riverside, Calif. 2: Pittsburgh-New Castle, Pa. 3: Bakersfield, Calif. 4: Birmingham-Hoover-Cullman, Ala. 5: Detroit-Warren-Flint, Mich. 6: Cleveland-Akron-Elyria, Ohio 7: Visalia-Porterville, Calif. 8: Cincinnati-Middletown-Wilmington, Ohio, Ky., Ind. 9: Indianapolis-Anderson-Columbus, Ind. 10: St. Louis-St. Charles-Farmington, MO, Ill. 11: Chicago-Naperville-Michigan City, Ill., Ind., Wis. (tie) 11: Lancaster, Pa. 13: Atlanta-Sandy Springs-Gainesville, Ga., Ala. 14: York-Hanover-Gettysburg, Pa. 15: Fresno-Madera, Calif. (tie) 15: Weirton-Steubenville, W.Va., Ohio 17: Hanford-Corcoran, Calif. (tie) 17: New York-Newark-Bridgeport, N.Y., N.J., Conn. 19: Canton-Massillon, Ohio 20: Washington-Baltimore-Northern Virginia, D.C., Md., Va. (tie) 20: Charleston, W.Va. 22: Louisville-Jefferson County-Elizabethtown-Scottsburg, Ky., Ind. 23: Huntington-Ashland, W.Va., Ky., Ohio 24: Philadelphia-Camden-Vineland, Pa., N.J., De., Md. (tie) 24: Hagerstown-Martinsburg, Md., W.Va. 24: Rome, Ga.
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