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_20170923_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
Sat
Sep 23
Sun
Sep 24
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
32 
Bishop Paiute Tribe
aqi not available
aqi not available
Chester
aqi not available
aqi not available
 
Chico
Good
Good
25 
Death Valley National Park
36
aqi not available
35 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
32 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
15 
Imperial Valley
50
50
46 
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
35
aqi not available
26 
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
20 
Los Angeles Area
        Antelope Vly
37
46
35 
        Anza Vly
37
50
43 
        Banning
42
67
47 
        Barstow
37
46
14 
        Big Bear Lake
46
67
 
        C San Bernardino M
67
100
39 
        C San Bernardino-1
46
67
58 
        C San Bernardino-2
53
67
58 
        Capistrano Vly
37
50
28 
        Central Coastal
46
42
28 
        Central LA CO
55
50
58 
        Central Orange-1
37
46
53 
        Central Orange-2
42
53
53 
        Coachella Vly
50
67
43 
        E San Bernardino
57
100
25 
        E San Fernando Vly
42
42
58 
        E San Gabriel V-1
46
67
49 
        E San Gabriel V-2
50
100
49 
        East Riverside CO
37
42
 
        Hemet/San Jacinto
37
46
43 
        Hesperia
37
46
33 
        Lake Elsinore
50
67
29 
        Metro Riverside CO
63
67
60 
        N Coastal Orange
46
46
43 
        NW Coastal LA
38
46
43 
        NW San Bernardino
50
100
58 
        Norco/Corona
50
61
60 
        North Orange CO
37
55
53 
        Perris Vly
46
57
43 
        Phelan
42
50
39 
        Pomona Walnut Vly
42
59
17 
        S Central LA CO
29
38
        S San Gabriel Vly
37
46
 
        SW Coastal LA
38
46
43 
        SW San Bernardino
37
67
58 
        Saddleback Vly
37
46
53 
        San Gabriel Mts
38
53
49 
        Santa Clarita Vly
42
46
19 
        South Coastal LA
37
46
43 
        Southeast LA CO
57
50
53 
        Temecula Vly
38
67
43 
        Trona
37
46
24 
        Twentynine Palms
37
46
14 
        Victorville
37
42
22 
        W San Bernardino M
46
67
58 
        W San Fernando Vly
66
42
58 
        W San Gabriel Vly
46
67
56 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
aqi not available
13 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
17 
        Davenport
Good
Good
 
        Hollister
Good
Good
13 
        King City
Good
Good
37 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
12 
        Salinas
Good
Good
37 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
11 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
20 
Paradise
Good
Good
35 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
72 
Quincy
aqi not available
aqi not available
21 
Red Bluff
aqi not available
aqi not available
 
Redding
40
aqi not available
41 
Sacramento Area
        Arden Arcade-Del Paso Manor
43
48
32 
        Auburn
42
49
22 
        Colfax
42
49
24 
        Cool
42
50
25 
        Davis
40
45
21 
        Elk Grove
43
48
15 
        Folsom
43
48
20 
        Lincoln
42
49
24 
        Natomas
43
48
 
        North Highlands
43
48
11 
        Placerville
42
50
30 
        Rio Vista
40
45
19 
        Roseville-Rocklin
42
49
12 
        Sacramento
43
48
21 
        Sloughhouse
43
48
19 
        Vacaville
40
45
27 
        Woodland
40
45
25 
San Diego Area
        San Diego Coast
Moderate
Moderate
19 
        San Diego Foothills
Moderate
Moderate
33 
        San Diego Mesa and Inland Valley
Good
Moderate
52 
San Francisco Area
        Concord
43
45
42 
        Fairfield
43
45
29 
        Fremont
40
42
48 
        Livermore
43
45
18 
        Napa
46
55
28 
        Oakland
46
46
49 
        Redwood City
40
42
48 
        San Francisco
46
46
28 
        San Jose
43
46
21 
        San Rafael
46
55
27 
        Santa Rosa
46
55
20 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
Good
Good
40 
        Fresno
Good
Good
        Hanford
Good
Good
39 
        Madera
Good
Good
        Merced
Good
Good
27 
        Modesto
Good
Good
22 
        Stockton
Good
Good
21 
        Visalia
Good
Good
43 
San Luis Obispo County
        Atascadero
37
41
12 
        Carrizo Plains
43
51
19 
        Morro Bay
34
35
21 
        Nipomo
49
48
47 
        Paso Robles
42
44
12 
        Red Hills
45
51
33 
        San Luis Obispo
37
40
33 
Santa Barbara County
        Carpinteria
Good
aqi not available
19 
        Gaviota Coast
Good
aqi not available
31 
        Goleta
Good
aqi not available
21 
        Lompoc
Good
aqi not available
31 
        Paradise Road
Good
aqi not available
11 
        Santa Barbara
Good
aqi not available
17 
        Santa Maria
Good
aqi not available
23 
        Santa Ynez
Good
aqi not available
11 
Santa Rosa Rancheria
aqi not available
aqi not available
44 
Sequoia/Kings Canyon National Parks
41
aqi not available
57 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
Truckee
aqi not available
aqi not available
57 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
14 
Ventura County Area
        Ojai
45
50
17 
        Oxnard
45
45
32 
        Piru
50
50
19 
        Simi Valley
50
50
23 
        Thousand Oaks
45
50
33 
Western Nevada County
40
45
30 
Willows
Good
aqi not available
44 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
36
aqi not available
13 
Yuba City/Marysville
Good
Good
20 
Yucca Vly
37
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.