| Table 6b: Cleanest Counties for Ozone Air Pollution
| County, State
| Metropolitan Statistical Area
| County, State
| Metropolitan Statistical Area |
| Yukon-Koyukuk, AK
|
| Douglas, NE
| Omaha-Council Bluffs-Fremont, NE-IA
|
| Cochise, AZ
|
| Lancaster, NE
| Lincoln, NE
|
| Coconino, AZ
| Flagstaff, AZ
| Douglas, NV
| Sacramento--Arden-Arcade--Truckee,
|
| Montgomery, AR
|
| Washoe, NV
| CA-NV
|
| Glenn, CA
|
| White Pine, NV
| Reno-Sparks, NV
|
| Lake, CA
|
| Eddy, NM
|
|
| Marin, CA
| San Jose-San Francisco-Oakland, CA
| Sandoval, NM
|
|
| Mendocino, CA
|
| Valencia, NM
| Albuquerque, NM
|
| Monterey, CA
| Salinas, CA
| Swain, NC
| Albuquerque, NM
|
| Napa, CA
| San Jose-San Francisco-Oakland, CA
| Billings, ND
|
|
| Plumas, CA
|
| Cass, ND
|
|
| San Francisco, CA
| San Jose-San Francisco-Oakland, CA
| Dunn, ND
| Fargo-Wahpeton, ND-MN
|
| San Luis Obispo, CA
| San Luis Obispo-Paso Robles, CA
| Mercer, ND
|
|
| San Mateo, CA
| San Jose-San Francisco-Oakland, CA
| Oliver, ND
|
|
| Santa Cruz, CA
| San Jose-San Francisco-Oakland, CA
| Columbia, OR
|
|
| Siskiyou, CA
|
| Jackson, OR
| Portland-Vancouver-Beaverton, OR-WA
|
| Solano, CA
| San Jose-San Francisco-Oakland, CA
| Lane, OR
| Medford, OR
|
| Sonoma, CA
| San Jose-San Francisco-Oakland, CA
| Marion, OR
| Eugene-Springfield, OR
|
| Adams, CO
| Denver-Aurora-Boulder, CO
| Minnehaha, SD
| Salem, OR
|
| Denver, CO
| Denver-Aurora-Boulder, CO
| Brewster, TX
| Sioux Falls, SD
|
| El Paso, CO
| Colorado Springs, CO
| Cameron, TX
|
|
| La Plata, CO
|
| Kaufman, TX
| Brownsville-Harlingen-Raymondville, TX
|
| Montezuma, CO
|
| Webb, TX
| Dallas-Fort Worth, TX
|
| Weld, CO
| Greeley, CO
| Cache, UT
| Laredo, TX
|
| Lake, FL
| Orlando-The Villages, FL
| San Juan, UT
| Logan, UT-ID
|
| Leon, FL
| Tallahassee, FL
| Clallam, WA
|
|
| Hawaii, HI
|
| Clark, WA
|
|
| Honolulu, HI
| Honolulu, HI
| Klickitat, WA
| Portland-Vancouver-Beaverton, OR-WA
|
| Butte, ID
|
| Pierce, WA
|
|
| Rock Island, IL
| Davenport-Moline-Rock Island, IA-IL
| Skagit, WA
| Seattle-Tacoma-Olympia, WA
|
| Gibson, IN
| Evansville, IN-KY
| Spokane, WA
| Mount Vernon-Anacortes, WA
|
| Palo Alto, IA
|
| Thurston, WA
| Spokane, WA
|
| Polk, IA
| Des Moines-Newton, IA
| Whatcom, WA
| Seattle-Tacoma-Olympia, WA
|
| Story, IA
| Ames-Boone, IA
| Oneida, WI
| Bellingham, WA
|
| Orleans, LA
| New Orleans-Metairie-Bogalusa, LA
| Sauk, WI
|
|
| Lake, MN
|
| Vernon, WI
| Madison-Baraboo, WI
|
| Mille Lacs, MN
|
| Vilas, WI
|
|
| St. Louis, MN
| Duluth, MN-WI
| Teton, WY
|
|
| Flathead, MT
| |
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