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_20170920_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
Wed
Sep 20
Thu
Sep 21
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
39 
Bishop Paiute Tribe
aqi not available
aqi not available
22 
Chester
aqi not available
aqi not available
50 
Chico
Good
Good
33 
Death Valley National Park
43
42
 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
46 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
30 
Imperial Valley
68
103
84 
Joshua Tree National Park
aqi not available
aqi not available
49 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
34
32
24 
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
70 
Los Angeles Area
        Antelope Vly
50
50
46 
        Anza Vly
50
55
42 
        Banning
63
68
52 
        Barstow
50
46
46 
        Big Bear Lake
67
67
 
        C San Bernardino M
100
100
58 
        C San Bernardino-1
67
63
67 
        C San Bernardino-2
67
68
67 
        Capistrano Vly
50
55
35 
        Central Coastal
46
55
35 
        Central LA CO
53
55
75 
        Central Orange-1
46
46
39 
        Central Orange-2
53
55
39 
        Coachella Vly
67
100
64 
        E San Bernardino
67
67
43 
        E San Fernando Vly
57
63
75 
        E San Gabriel V-1
66
70
49 
        E San Gabriel V-2
61
67
49 
        East Riverside CO
50
50
 
        Hemet/San Jacinto
61
67
42 
        Hesperia
50
67
42 
        Lake Elsinore
67
100
42 
        Metro Riverside CO
76
72
60 
        N Coastal Orange
42
55
37 
        NW Coastal LA
46
50
37 
        NW San Bernardino
70
70
67 
        Norco/Corona
66
68
59 
        North Orange CO
57
59
39 
        Perris Vly
66
67
42 
        Phelan
50
67
44 
        Pomona Walnut Vly
67
66
47 
        S Central LA CO
50
42
42 
        S San Gabriel Vly
50
46
 
        SW Coastal LA
50
53
37 
        SW San Bernardino
68
68
67 
        Saddleback Vly
67
53
39 
        San Gabriel Mts
63
67
60 
        Santa Clarita Vly
55
67
60 
        South Coastal LA
50
53
37 
        Southeast LA CO
61
57
39 
        Temecula Vly
55
61
42 
        Trona
50
50
47 
        Twentynine Palms
50
67
46 
        Victorville
50
50
32 
        W San Bernardino M
61
67
67 
        W San Fernando Vly
68
74
75 
        W San Gabriel Vly
57
67
64 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
52 
Mono Lake
aqi not available
aqi not available
46 
Monterey Bay Area
        Carmel Valley
Good
Good
22 
        Davenport
Good
Good
 
        Hollister
Good
Good
30 
        King City
Good
Good
29 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
29 
        Salinas
Good
Good
31 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
31 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
70 
Paradise
Good
Good
33 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
Quincy
aqi not available
aqi not available
11 
Red Bluff
Good
Good
24 
Redding
aqi not available
aqi not available
77 
Sacramento Area
        Arden Arcade-Del Paso Manor
39
36
36 
        Auburn
41
37
27 
        Colfax
41
37
        Cool
40
37
27 
        Davis
37
36
23 
        Elk Grove
39
36
23 
        Folsom
39
36
25 
        Lincoln
41
37
25 
        Natomas
39
36
 
        North Highlands
39
36
27 
        Placerville
40
37
27 
        Rio Vista
37
36
        Roseville-Rocklin
41
37
25 
        Sacramento
39
36
27 
        Sloughhouse
39
36
25 
        Vacaville
37
36
24 
        Woodland
37
36
30 
San Diego Area
        San Diego Coast
Moderate
Good
60 
        San Diego Foothills
Moderate
Good
64 
        San Diego Mesa and Inland Valley
Moderate
Good
44 
San Francisco Area
        Concord
37
36
28 
        Fairfield
37
36
24 
        Fremont
35
33
20 
        Livermore
37
36
20 
        Napa
34
33
24 
        Oakland
33
32
19 
        Redwood City
35
33
20 
        San Francisco
33
32
18 
        San Jose
36
35
29 
        San Rafael
34
33
40 
        Santa Rosa
34
33
25 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
49
Good
51 
        Fresno
45
Good
37 
        Hanford
58
Moderate
49 
        Madera
44
Good
32 
        Merced
38
Good
26 
        Modesto
31
Good
29 
        Stockton
38
Good
23 
        Visalia
47
Good
56 
San Luis Obispo County
        Atascadero
37
40
37 
        Carrizo Plains
46
48
40 
        Morro Bay
36
36
26 
        Nipomo
90
98
127 
        Paso Robles
42
43
37 
        Red Hills
43
46
38 
        San Luis Obispo
50
46
33 
Santa Barbara County
        Carpinteria
Good
Good
33 
        Gaviota Coast
Good
Good
41 
        Goleta
Good
Good
41 
        Lompoc
Good
Good
38 
        Paradise Road
Good
Good
40 
        Santa Barbara
Good
Good
42 
        Santa Maria
Good
Good
35 
        Santa Ynez
Good
Good
44 
Santa Rosa Rancheria
aqi not available
aqi not available
48 
Sequoia/Kings Canyon National Parks
48
45
61 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
15 
Truckee
aqi not available
aqi not available
 
Tuolumne City
aqi not available
aqi not available
 
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.
Tuolumne County
aqi not available
aqi not available
31 
Ventura County Area
        Ojai
50
45
42 
        Oxnard
45
45
47 
        Piru
50
45
48 
        Simi Valley
50
45
49 
        Thousand Oaks
50
45
47 
Western Nevada County
50
50
33 
Willows
Good
Good
44 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
38
42
72 
Yuba City/Marysville
Good
aqi not available
36 
Yucca Vly
50
50
 
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.