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_20190523_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 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
Thu
May 23
Fri
May 24
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
29 
Bishop Paiute Tribe
aqi not available
aqi not available
16 
Brawley
58
71
11 
Calexico
58
71
44 
Chester
aqi not available
aqi not available
Chico
Good
Good
31 
Death Valley National Park
38
38
42 
El Centro
58
71
28 
Eureka
aqi not available
aqi not available
31 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
aqi not available
aqi not available
36 
Great Basin Air District
aqi not available
aqi not available
29 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
25 
Imperial Valley
58
71
44 
Joshua Tree National Park
aqi not available
aqi not available
36 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
33
36
31 
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
16 
Los Angeles Area
        Antelope Vly
38
42
30 
        Anza Vly
40
50
37 
        Banning
38
47
50 
        Barstow
42
47
35 
        Big Bear Lake
29
51
 
        C San Bernardino M
35
54
33 
        C San Bernardino-1
33
54
26 
        C San Bernardino-2
33
54
26 
        Capistrano Vly
36
46
39 
        Central Coastal
37
45
39 
        Central LA CO
38
50
48 
        Central Orange-1
34
43
34 
        Central Orange-2
34
43
34 
        Coachella Vly
43
49
44 
        E San Bernardino
33
46
23 
        E San Fernando Vly
38
50
43 
        E San Gabriel V-1
32
46
41 
        E San Gabriel V-2
32
46
41 
        East Riverside CO
40
46
 
        Hemet/San Jacinto
36
47
37 
        Hesperia
36
49
35 
        Lake Elsinore
33
50
33 
        Metro Riverside CO
40
50
48 
        N Coastal Orange
35
41
40 
        NW Coastal LA
38
42
40 
        NW San Bernardino
33
49
23 
        Norco/Corona
37
50
48 
        North Orange CO
33
44
34 
        Perris Vly
33
49
37 
        Phelan
38
51
32 
        Pomona Walnut Vly
32
46
18 
        S Central LA CO
38
50
32 
        S San Gabriel Vly
33
50
 
        SW Coastal LA
43
46
40 
        SW San Bernardino
32
48
23 
        Saddleback Vly
36
49
39 
        San Gabriel Mts
43
47
41 
        Santa Clarita Vly
36
47
34 
        South Coastal LA
33
46
40 
        Southeast LA CO
33
50
34 
        Temecula Vly
38
46
37 
        Trona
40
50
38 
        Twentynine Palms
40
46
35 
        Victorville
36
54
32 
        W San Bernardino M
34
51
33 
        W San Fernando Vly
38
50
43 
        W San Gabriel Vly
41
38
48 
Mammoth Lakes
aqi not available
aqi not available
12 
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
27 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
43 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Niland
58
71
28 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
16 
Paradise
Good
Good
32 
Point Arena
aqi not available
aqi not available
36 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
Red Bluff
Good
Good
31 
Redding
44
45
45 
Sacramento Area
        Arden Arcade-Del Paso Manor
39
42
37 
        Auburn
40
43
34 
        Colfax
40
43
43 
        Cool
42
44
30 
        Davis
35
37
37 
        Elk Grove
39
42
51 
        Folsom
39
42
34 
        Lincoln
40
43
47 
        Natomas
39
42
 
        North Highlands
39
42
 
        Placerville
42
44
30 
        Rio Vista
35
37
        Roseville-Rocklin
40
43
31 
        Sacramento
39
42
37 
        Sloughhouse
39
42
31 
        Vacaville
35
37
33 
        Woodland
35
37
36 
San Diego Area
        San Diego Coast
Good
Good
37 
        San Diego Foothills
Good
Moderate
35 
        San Diego Mesa and Inland Valley
Good
Good
47 
San Francisco Area
        Concord
38
38
52 
        Fairfield
38
38
42 
        Fremont
37
38
35 
        Livermore
38
38
37 
        Napa
39
37
41 
        Oakland
46
36
56 
        Redwood City
37
38
35 
        San Francisco
46
36
52 
        San Jose
42
39
36 
        San Rafael
39
37
42 
        Santa Rosa
39
37
27 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
50
50
28 
        Fresno
49
44
37 
        Hanford
48
41
33 
        Madera
49
42
40 
        Merced
50
39
35 
        Modesto
50
38
34 
        Stockton
46
50
38 
        Visalia
47
42
33 
San Luis Obispo County
        Atascadero
36
37
30 
        Carrizo Plains
36
37
31 
        Morro Bay
36
37
31 
        Nipomo
36
37
32 
        Paso Robles
36
37
30 
        Red Hills
36
37
27 
        San Luis Obispo
36
37
31 
Santa Barbara County
        Carpinteria
Good
Good
37 
        Gaviota Coast
Good
Good
41 
        Goleta
Good
Good
32 
        Lompoc
Good
Good
16 
        Paradise Road
Good
Good
36 
        Santa Barbara
Good
Good
33 
        Santa Maria
Good
Good
29 
        Santa Ynez
Good
Good
38 
Santa Rosa Rancheria
aqi not available
aqi not available
29 
Sequoia/Kings Canyon National Parks
31
36
36 
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
25 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
36 
Ukiah
aqi not available
aqi not available
25 
Ventura County Area
        Ojai
45
45
35 
        Oxnard
45
45
34 
        Piru
45
45
41 
        Simi Valley
45
45
42 
        Thousand Oaks
45
45
39 
Western Nevada County
aqi not available
aqi not available
31 
Westmorland
58
71
35 
Willits
aqi not available
aqi not available
28 
Willows
aqi not available
aqi not available
 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
32
35
43 
Yreka
aqi not available
aqi not available
34 
Yuba City/Marysville
Good
Good
31 
Yucca Vly
45
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.