California Air Districts

California's 35 local Air Districts are responsible for regional air quality planning, monitoring, and stationary source and facility permitting. The districts administer air quality improvement grant programs and are CARB's primary partners in efforts to ensure that all Californians breathe clean air.

Amador County APCD Includes all of Amador County	(209) 257-0112
Antelope Valley AQMD Includes northeast portion of Los Angeles County	(661) 723-8070
Bay Area AQMD Includes Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, and Santa Clara counties, and the western portion of Solano and southern portion of Sonoma counties	(415) 749-5000
Butte County AQMD Includes all of Butte County	(530)332-9400
Calaveras County APCD Includes all of Calveras County	(209) 754-6399
Colusa County APCD Includes all of Colusa County	(530) 458-0590
Eastern Kern APCD Includes eastern portion of Kern County	(661) 862-5250
EL Dorado County AQMD Includes all of El Dorado County	(530) 621-7501
Feather River AQMD Includes all of Sutter and Yuba counties	(530) 634-7659
Glenn County APCD Includes all of Glenn County	(530) 934-6500
Great Basin Unified APCD Includes all of Alpine, Inyo, and Mono counties	(760) 872-8211
Imperial County APCD Includes all of Imperial County	(442) 265-1800
Lake County AQMD Includes all of Lake County	(707) 263-7000
Lassen County APCD Includes all of Lassen County	(530)-252-4247
Mariposa County APCD Includes all of Mariposa County	(209) 966-3689
Mendocino County AQMD Includes all of Mendocino County	(707) 463-4354
Modoc County APCD Includes all of Modoc County	(530) 233-6401
Mojave Desert AQMD Includes the Northern portion of San Bernardino County, and the eastern portion of Riverside County	(760) 245-1661
Monterey Bay Air Resources District Includes all of Monterey, San Benito, and Santa Cruz counties	(831) 647-9411
North Coast Unified AQMD Includes all of Del Norte, Humboldt, and Trinity counties	(707) 443-3093
Northern Sierra AQMD Includes all of Nevada, Plumas, and Sierra counties	(530) 274-9360
Northern Sonoma County APCD Includes Northern portion of Sonoma County	(707) 433-5911
Placer County APCD Includes all of Placer County	(530) 745-2330
Sacramento Metro AQMD Includes all of Sacramento County	(916) 874-4800
San Diego County APCD Includes all of San Diego County	(858) 586-2600
San Joaquin Valley APCD Includes all of Fresno, Kings, Madera, Merced, San Joaquin, Stanislaus, Tulare, and Valley air basin portions of Kern counties	(559) 230-6000
San Luis Obispo County APCD Includes all of San Luis Obispo County	(805) 781-5912
Santa Barbara County APCD Includes all of Santa Barbara County	(805) 961-8800
Shasta County AQMD Includes all of Shasta County	(530) 225-5674
Siskiyou County APCD Includes all of Siskiyou County	(530) 841-4025
South Coast AQMD Includes Los Angeles County except for areas covered by the Antelope Valley AQMD, Orange County, and the western portion of San Bernardino and Riverside counties	(909) 396-2000
Tehama County APCD Includes all of Tehama County	(530)527-3717
Tuolumne County APCD All of Tuolumne County	(209) 533-5693
Ventura County APCD Includes all of Ventura County	(805) 645-1400
Yolo-Solano AQMD Includes all of Yolo and eastern portion of Solano counties	(530) 757-3650