Foxx
全美國污染最嚴重的城市/地區:

1. Los Angeles-Long Beach, CA
2. Bakersfield, CA
3. Visalia-Porterville-Hanford, CA
4. Fresno-Madera, CA
5. Sacramento-Roseville, CA
6. San Diego-Carlsbad, CA
7. Modesto-Merced, CA
8. Phoenix-Mesa-Scottsdale, AZ
9. Redding-Red Bluff, CA
10. New York-Newark, NY-NJ-CT-PA