California
 
Data and Forecasts courtesy of:
 

 - https://files.airnowtech.org/airnow/today/cur_aqi_ca_nv.jpg Map Map Map Map Map Map Map
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170925_ca_nv.jpg Map Map Map Map Map Map Map
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
AQI Animation - https://files.airnowtech.org/airnow/today/anim_aqi_ca_nv.gif Map Map Map Map Map Map Map
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 
AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
Action DayAction Day
 
State Air Quality Resources
Amador County Air Pollution Control District
American Lung Association (ALA) of California
Antelope Valley Air Quality Management District
BAAQMD Spare the Air 2002
Bay Area Air Quality Management District (BAAQMD)
Butte County Air Pollution Control District
California Air Resources Board (CARB)
California Environmental Protection Agency
California Environmental Protection Agency - Contact Us
Colusa County Air Pollution Control District
El Dorado County Air Quality Management District
Feather River Air Quality Management District
Glenn County Air Pollution Control District
Kern County Air Pollution Control District
Mendocino County Air Quality Management District
Mojave Desert Air Quality Management District
Monterey Bay Unified Air Pollution Control District
North Coast Unified Air Quality Management District
Northern Sierra Air Quality Management District
Placer County Air Pollution Control District
Sacramento Metro Air Quality Management District
Sacramento Metropolitan Air Quality Management District
San Diego County Air Pollution Control District
San Joaquin Valley Air Pollution Control District
San Luis Obispo County Air Pollution Control District
Santa Barbara County Air Pollution Control District
Shasta County Air Quality Management District
South Coast Air Quality Management District
Ventura County Air Pollution Control District
Yolo-Solano Air Quality Management District
Click on the city name for more detailed information.

printable summary
FORECAST CURRENT
AQI
Mon
Sep 25
Tue
Sep 26
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
41 
Bishop Paiute Tribe
aqi not available
aqi not available
12 
Chester
aqi not available
aqi not available
27 
Chico
Good
aqi not available
36 
Death Valley National Park
33
aqi not available
38 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
41 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
aqi not available
20 
Imperial Valley
48
51
42 
Joshua Tree National Park
aqi not available
aqi not available
41 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
31
aqi not available
37 
Laytonville
aqi not available
aqi not available
 
Leggett
aqi not available
aqi not available
 
Lone Pine Paiute-Shoshone Reservation
aqi not available
aqi not available
10 
Los Angeles Area
        Antelope Vly
50
46
42 
        Anza Vly
67
50
54 
        Banning
67
50
44 
        Barstow
46
38
41 
        Big Bear Lake
50
42
 
        C San Bernardino M
53
53
42 
        C San Bernardino-1
57
52
98 
        C San Bernardino-2
57
67
98 
        Capistrano Vly
67
67
58 
        Central Coastal
67
67
58 
        Central LA CO
100
67
54 
        Central Orange-1
67
67
51 
        Central Orange-2
59
53
51 
        Coachella Vly
67
46
46 
        E San Bernardino
67
67
51 
        E San Fernando Vly
100
55
43 
        E San Gabriel V-1
67
50
44 
        E San Gabriel V-2
67
67
44 
        East Riverside CO
46
42
 
        Hemet/San Jacinto
67
50
54 
        Hesperia
46
42
44 
        Lake Elsinore
67
67
48 
        Metro Riverside CO
100
67
70 
        N Coastal Orange
67
67
52 
        NW Coastal LA
67
67
52 
        NW San Bernardino
61
67
54 
        Norco/Corona
67
67
51 
        North Orange CO
67
67
51 
        Perris Vly
67
67
54 
        Phelan
46
42
44 
        Pomona Walnut Vly
67
67
58 
        S Central LA CO
67
55
54 
        S San Gabriel Vly
67
53
 
        SW Coastal LA
67
67
52 
        SW San Bernardino
67
53
58 
        Saddleback Vly
67
67
58 
        San Gabriel Mts
53
46
48 
        Santa Clarita Vly
67
67
44 
        South Coastal LA
68
63
52 
        Southeast LA CO
67
55
51 
        Temecula Vly
67
50
54 
        Trona
46
38
42 
        Twentynine Palms
50
42
41 
        Victorville
46
42
33 
        W San Bernardino M
55
46
54 
        W San Fernando Vly
100
67
43 
        W San Gabriel Vly
67
53
49 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
67 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
38 
        Davenport
Good
Good
 
        Hollister
Good
Good
34 
        King City
Good
Good
44 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
41 
        Salinas
Good
Good
44 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
37 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
17 
Paradise
Good
aqi not available
42 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
13 
Quincy
aqi not available
aqi not available
18 
Red Bluff
aqi not available
aqi not available
 
Redding
aqi not available
aqi not available
59 
Sacramento Area
        Arden Arcade-Del Paso Manor
46
48
48 
        Auburn
46
48
14 
        Colfax
46
48
44 
        Cool
46
48
45 
        Davis
43
46
35 
        Elk Grove
46
48
39 
        Folsom
46
48
41 
        Lincoln
46
48
37 
        Natomas
46
48
 
        North Highlands
46
48
40 
        Placerville
46
48
45 
        Rio Vista
43
46
35 
        Roseville-Rocklin
46
48
39 
        Sacramento
46
48
33 
        Sloughhouse
46
48
41 
        Vacaville
43
46
35 
        Woodland
43
46
38 
San Diego Area
        San Diego Coast
Moderate
Moderate
51 
        San Diego Foothills
Good
Good
50 
        San Diego Mesa and Inland Valley
Good
Good
47 
San Francisco Area
        Concord
48
61
40 
        Fairfield
48
61
43 
        Fremont
45
48
40 
        Livermore
48
61
42 
        Napa
57
59
42 
        Oakland
53
57
47 
        Redwood City
45
48
40 
        San Francisco
53
57
54 
        San Jose
50
67
43 
        San Rafael
57
59
37 
        Santa Rosa
57
59
41 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
Good
Good
77 
        Fresno
Good
Good
67 
        Hanford
Good
Good
51 
        Madera
Good
Good
45 
        Merced
Good
Good
35 
        Modesto
Good
Good
44 
        Stockton
Good
Good
21 
        Visalia
Good
Good
67 
San Luis Obispo County
        Atascadero
47
48
47 
        Carrizo Plains
51
55
47 
        Morro Bay
44
45
39 
        Nipomo
50
49
46 
        Paso Robles
49
50
51 
        Red Hills
51
55
44 
        San Luis Obispo
48
49
44 
Santa Barbara County
        Carpinteria
Good
Good
43 
        Gaviota Coast
Good
Good
48 
        Goleta
Good
Good
48 
        Lompoc
Good
Good
50 
        Paradise Road
Good
Good
 
        Santa Barbara
Good
Good
47 
        Santa Maria
Good
Good
42 
        Santa Ynez
Good
Good
61 
Santa Rosa Rancheria
aqi not available
aqi not available
47 
Sequoia/Kings Canyon National Parks
44
aqi not available
58 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
19 
Truckee
aqi not available
aqi not available
26 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
44 
Ventura County Area
        Ojai
55
55
48 
        Oxnard
45
55
48 
        Piru
55
55
42 
        Simi Valley
55
55
41 
        Thousand Oaks
55
55
44 
Western Nevada County
50
50
40 
Willows
Good
Good
47 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
34
aqi not available
38 
Yuba City/Marysville
Good
Good
36 
Yucca Vly
50
46
 
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.