Most Polluted Cities

This is amazing, California the land of healthy lifestyles is the worst US polluted city. Say it ain't so.

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