By Ozone
1. Los Angeles-Long Beach-Riverside,
CA
2. Bakersfield-Delano, CA
3. Visalia-Porterville, CA
4. Fresno-Madera, CA
5. Sacramento--Arden-Arcade--Yuba City,
CA
6. Hanford-Corcoran, CA
7. San Diego-Carlsbad-San Marcos, CA
8. Houston-Baytown-Huntsville, TX
9. Merced, CA
10. Charlotte-Gastonia-Salisbury, NC-SC
11. San Luis Obispo-Paso Robles, CA
12. Dallas-Fort Worth, TX
13. El Centro, CA
14. Modesto, CA
14. Washington-Baltimore-Northern
Virginia, DC-MD-VA-WV
16. Cincinnati-Middletown-Wilmington,
OH-KY-IN
17. New York-Newark-Bridgeport,
NY-NJ-CT-PA
18. Knoxville-Sevierville-La Follette,
TN
19. Phoenix-Mesa-Glendale, AZ
20. Philadelphia-Camden-Vineland,
PA-NJ-DE-MD
21. Birmingham-Hoover-Cullman, AL
22. Chico, CA
23. Atlanta-Sandy Springs-Gainesville,
GA-AL
24. Pittsburgh-New Castle, PA
25. Las Vegas-Paradise-Pahrump, NV
By Year Round Particle Pollution
1. Bakersfield-Delano, CA
2. Visalia-Porterville, CA
2. Phoenix-Mesa-Glendale, AZ
2. Los Angeles-Long Beach-Riverside, CA
5. Hanford-Corcoran, CA
6. Fresno-Madera, CA
7. Pittsburgh-New Castle, PA
8. Birmingham-Hoover-Cullman, AL
9. Cincinnati-Middletown-Wilmington,
OH-KY-IN
10. Modesto, CA
10. Louisville-Jefferson
County-Elizabethtown-Scottsburg, KY-IN
12. Charleston, WV
12. Steubenville-Weirton, OH-WV
12. Cleveland-Akron-Elyria, OH
15. Huntington-Ashland, WV-KY-OH
15. Indianapolis-Anderson-Columbus, IN
17. St. Louis-St. Charles-Farmington,
MO-IL
17. Detroit-Warren-Flint, MI
17. Houston-Baytown-Huntsville, TX
20. Hagerstown-Martinsburg, MD-WV
21. New York-Newark-Bridgeport,
NY-NJ-CT-PA
22. Lancaster, PA
22. Dayton-Springfield-Greenville, OH
24. Knoxville-Sevierville-La Follette,
TN
24. Philadelphia-Camden-Vineland,
PA-NJ-DE-MD
24. York-Hanover-Gettysburg, PA
24. Parkersburg-Marietta, WV-OH
By Short-Term Particle Pollution
1. Bakersfield-Delano, CA
2. Fresno-Madera, CA
3. Pittsburgh-New Castle, PA
4. Los Angeles-Long Beach-Riverside, CA
5. Salt Lake City-Ogden-Clearfield, UT
6. Provo-Orem, UT
7. Visalia-Porterville, CA
8. Birmingham-Hoover-Cullman, AL
9. Logan, UT-ID
9. Hanford-Corcoran, CA
9. Sacramento--Arden-Arcade--Yuba City,
CA
12. Modesto, CA
13. Merced, CA
14. Eugene-Springfield, OR
15. San Diego-Carlsbad-San Marcos, CA
16. Stockton, CA
17. Chicago-Naperville-Michigan City,
IL-IN-WI
18. Seattle-Tacoma-Olympia, WA
19. Fairbanks, AK
20. Philadelphia-Camden-Vineland,
PA-NJ-DE-MD
21. Macon-Warner Robins-Fort Valley, GA
22. Louisville-Jefferson
County-Elizabethtown-Scottsburg, KY-IN
23. Green Bay, WI
24. Phoenix-Mesa-Glendale, AZ
24. Portland-Vancouver-Hillsboro, OR-WA
24. San Jose-San Francisco-Oakland, CA
24. Madison-Baraboo, WI
24. Davenport-Moline-Rock Island, IA-IL
24. Wheeling, WV-OH
10 Cities Most
Polluted by Short-term
Particle Pollution
1. Bakersfield-Delano,
Calif.
2. Fresno-Madera, Calif.
3. Pittsburgh-New
Castle, Pa.
4. Los Angeles-Long
Beach-Riverside, Calif.
5. Salt Lake
City-Ogden-Clearfield,
Utah
6. Provo-Orem, Utah
7. Visalia-Porterville,
Calif.
8.
Birmingham-Hoover-Cullman,
Ala.
9. Hanford-Corcoran,
Calif.
9. Logan, Utah-Idaho
9.
Sacramento-Arden-Arcade-Yuba
City, Calif.-Nev.
10 Cities Most Polluted
by Year-Round Particle
Pollution
1. Bakersfield-Delano,
Calif.
2. Los Angeles-Long
Beach-Riverside, Calif.
2.
Phoenix-Mesa-Glendale,
Ariz.
2. Visalia-Porterville,
Calif.
5. Hanford-Corcoran,
Calif.
6. Fresno-Madera, Calif.
7.Pittsburgh-New Castle,
Pa.
8.Birmingham-Hoover-Cullman,
Ala.
9.Cincinnati-Middletown-Wilmington,
Ohio-Ky.-Ind.
10.Louisville-Jefferson
County-Elizabethtown-Scottsburg,
Ky.-Ind.
10.Modesto, Calif.