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_20190917_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.
 - 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.
 - 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 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 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 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
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 Air Resources 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
Siskiyou County Air Pollution Control 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
Tue
Sep 17
Wed
Sep 18
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
 
Brawley
63
48
 
Calexico
63
48
50 
Chester
aqi not available
aqi not available
14 
Chico
Good
Good
19 
Death Valley National Park
41
aqi not available
41 
El Centro
63
48
39 
Eureka
aqi not available
aqi not available
20 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
aqi not available
aqi not available
17 
Great Basin Air District
aqi not available
aqi not available
41 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
20 
Imperial Valley
63
48
50 
Indio - Twenty Nine Palms Reservation
aqi not available
aqi not available
44 
Joshua Tree National Park
aqi not available
aqi not available
43 
La Grange
aqi not available
aqi not available
 
Lassen Volcanic National Park
39
aqi not available
23 
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
 
Los Angeles Area
        Antelope Vly
43
80
39 
        Anza Vly
41
74
36 
        Banning
47
77
31 
        Barstow
45
97
39 
        Big Bear Lake
74
101
 
        C San Bernardino M
49
100
43 
        C San Bernardino-1
74
100
35 
        C San Bernardino-2
74
101
35 
        Capistrano Vly
39
33
34 
        Central Coastal
38
30
34 
        Central LA CO
53
61
64 
        Central Orange-1
42
50
37 
        Central Orange-2
42
50
37 
        Coachella Vly
47
100
60 
        E San Bernardino
93
101
40 
        E San Fernando Vly
50
46
49 
        E San Gabriel V-1
50
55
56 
        E San Gabriel V-2
50
55
56 
        East Riverside CO
43
90
 
        Hemet/San Jacinto
53
105
36 
        Hesperia
46
97
34 
        Lake Elsinore
40
71
31 
        Metro Riverside CO
74
101
51 
        N Coastal Orange
34
38
54 
        NW Coastal LA
57
46
54 
        NW San Bernardino
58
93
 
        Norco/Corona
64
84
51 
        North Orange CO
46
42
37 
        Perris Vly
47
97
36 
        Phelan
44
50
37 
        Pomona Walnut Vly
50
46
33 
        S Central LA CO
55
50
28 
        S San Gabriel Vly
46
45
 
        SW Coastal LA
59
50
54 
        SW San Bernardino
54
77
33 
        Saddleback Vly
50
37
37 
        San Gabriel Mts
42
74
56 
        Santa Clarita Vly
64
84
 
        South Coastal LA
42
33
54 
        Southeast LA CO
50
61
37 
        Temecula Vly
40
64
36 
        Trona
41
64
36 
        Twentynine Palms
43
90
39 
        Victorville
46
97
38 
        W San Bernardino M
61
105
43 
        W San Fernando Vly
42
49
49 
        W San Gabriel Vly
48
47
64 
Mammoth Lakes
aqi not available
aqi not available
11 
Markleeville
aqi not available
aqi not available
 
Mendocino County
aqi not available
aqi not available
 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
 
        Davenport
Good
Good
 
        Hollister
Good
Good
 
        King City
Good
Good
 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
 
        Salinas
Good
Good
19 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
27 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Niland
63
48
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
21 
Paradise
Good
Good
25 
Point Arena
aqi not available
aqi not available
17 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
14 
Red Bluff
Good
Good
13 
Redding
aqi not available
aqi not available
27 
Sacramento Area
        Arden Arcade-Del Paso Manor
42
35
24 
        Auburn
43
36
34 
        Colfax
43
36
21 
        Cool
43
36
27 
        Davis
42
32
23 
        Elk Grove
42
35
23 
        Folsom
42
35
 
        Lincoln
43
36
10 
        Natomas
42
35
 
        North Highlands
42
35
19 
        Placerville
43
36
27 
        Rio Vista
42
32
18 
        Roseville-Rocklin
43
36
21 
        Sacramento
42
35
20 
        Sloughhouse
42
35
18 
        Vacaville
42
32
23 
        Woodland
42
32
22 
San Diego Area
        San Diego Coast
Good
Good
27 
        San Diego Foothills
Moderate
Good
40 
        San Diego Mesa and Inland Valley
Moderate
Moderate
55 
San Francisco Area
        Concord
37
40
23 
        Fairfield
37
40
29 
        Fremont
46
38
21 
        Livermore
37
40
24 
        Napa
42
38
23 
        Oakland
53
42
42 
        Redwood City
46
38
18 
        San Francisco
53
42
30 
        San Jose
36
39
38 
        San Rafael
42
38
24 
        Santa Rosa
42
38
27 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
50
aqi not available
24 
        Fresno
45
aqi not available
36 
        Hanford
42
aqi not available
20 
        Madera
41
aqi not available
13 
        Merced
41
aqi not available
28 
        Modesto
39
aqi not available
21 
        Stockton
36
aqi not available
26 
        Visalia
43
aqi not available
39 
San Luis Obispo County
        Atascadero
36
38
23 
        Carrizo Plains
44
39
29 
        Morro Bay
36
35
29 
        Nipomo
53
60
33 
        Paso Robles
39
37
23 
        Red Hills
37
36
28 
        San Luis Obispo
37
36
30 
Santa Barbara County
        Carpinteria
Good
Good
37 
        Gaviota Coast
Good
Good
33 
        Goleta
Good
Good
29 
        Lompoc
Good
Good
38 
        Paradise Road
Good
Good
32 
        Santa Barbara
Good
Good
34 
        Santa Maria
Good
Good
31 
        Santa Ynez
Good
Good
28 
Santa Rosa Rancheria
aqi not available
aqi not available
34 
Sequoia/Kings Canyon National Parks
44
aqi not available
38 
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
 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
30 
Ukiah
aqi not available
aqi not available
42 
Ventura County Area
        Ojai
55
50
36 
        Oxnard
40
40
 
        Piru
55
50
36 
        Simi Valley
60
50
35 
        Thousand Oaks
40
40
32 
Western Nevada County
35
40
33 
Westmorland
63
48
42 
Willits
aqi not available
aqi not available
58 
Willows
aqi not available
aqi not available
29 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
41
aqi not available
32 
Yreka
aqi not available
aqi not available
10 
Yuba City/Marysville
43
aqi not available
20 
Yucca Vly
45
100
 
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.