Ozone (O3) - by region

San Fransisco/Sacramento (North)

Elk Grove - Bruceville Road Outside Redding Livermore-Rincon Bethel Island Rd. San Andreas Colusa-Sunrise Blvd. Concord-Treat Blvd. Bishop Paiute Tribe C1023 San Rafael Outside Salinas Napa-Jefferson St. Grass Valley-Litton Bldg. Outside Lake Tahoe Auburn-Dewitt C Ave. Colfax-City Hall Roseville-N. Sunrise Blvd. Sacramento-Del Paso Manor Sacramento- T St. Elk Grove-Bruceville Rd. Folsom-Natoma St. Sloughhouse Hollister San Francisco-Arkansas St. Stockton-Hazelton St. Redwood City Gilory-9th St. San Jose-Jackson St. Santa Cruz Vallejo-304 Tuolumne St. Vacaville-Elmira Rd. Modesto-14th St. Yuba City-Almond St. Davis-UCD Campus Woodland-Gibson Rd. Hayward Jackson Paradise Placerville-Gold Nugget Way Cool-Highway 193 Fresno-Drumond St. Fresno-Sierra Skypark #2 Parlier Clovis-N. Villa Ave. Willows-E. Laurel St. White Cloud Mountain Yosemite National Park Turtleback Jerseydale-6440 Jerseydale Merced-S. Coffee Ave. Carmel Valley North Highlands-Blackfoot Way Pinnacles NMon Los Gatos Los Gatos San Martin-Murphy Ave. Sonora-Barretta St. Redding Outside Redding Lassen Volcanic National Park Turlock-S. Minaret St. Sutter Buttes-South Butte Tuscan Butte Red Bluff

Los Angeles (South)

Niland-English Rd. Calexico-Ethel St. C1018-Lone Pine Paiute/Shoshone Tribe-CA Bakersfield-5558 California Dr. Glendora-Laurel Burbank-W. Palm Ave. Los Angeles-N. Main St. Reseda Santa Clarita-County Fire Station Anaheim Banning-South Hathaway St. Riverside-Magnolia Riverside-Rubidoux Lake Elsinore-W. Flint St. Lake Gregory-Crestline Upland Escondido Alpine Camp Pendleton San Diego-Beardsley St. Outside Santa Maria Atascadero Santa Rosa Santa Maria-Broadway Lompoc H Street Visalia-N. Church St. Simi Valley-Cochran St. El Rio-Rio Mesa School #2 Calexico-Ethel St. Outside Mexicali Death Valley National Park Edison Maircopa-Stanilaus St. Oildale-3311 Manor St. Shafter-Walker St. Hanford-S. Irwin St. Azusa Glendoa-Laurel West Los Angeles-VA Hospital Pico Rivera Pomona Pasadena LAXH Costa Mesa-Mesa Verde Dr. Mission Viejo La Habra Indio-Jackson St. Palm Springs-Fire Station Perris Fontana-Arrow Highway Redlands-Dearborn Joshua Tree National Park San Bernadino-4th St. Chula Vista Del Mar-Mira Costa College Otay Mesa-Paseo International Paso Robles-Santa Fe Ave. Outside San Luis Obispo Lompoc HS&P EL CAPITAN Paradise Rd. Nojoqui GTCB CARPINTERIA Exxon1 GOLETA Santa Ynez WAFB STS Sequoia National Park Lower Kaweah Sequoia/Kings Canyon-Ash Mountain Thousand Oaks-Moorpark Rd. Piru-Pacific Ojai-Ojai Ave.