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_20180219_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
Feb 19
Tue
Feb 20
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
20 
Chester
aqi not available
aqi not available
34 
Chico
Moderate
Moderate
35 
Death Valley National Park
36
34
42 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
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
Moderate
Moderate
25 
Imperial Valley
114
50
200 
Joshua Tree National Park
aqi not available
aqi not available
43 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
36
36
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
14 
Los Angeles Area
        Antelope Vly
29
46
40 
        Anza Vly
37
33
41 
        Banning
37
29
41 
        Barstow
37
28
41 
        Big Bear Lake
37
28
 
        C San Bernardino M
46
46
41 
        C San Bernardino-1
50
46
40 
        C San Bernardino-2
50
46
40 
        Capistrano Vly
33
33
41 
        Central Coastal
33
46
41 
        Central LA CO
38
33
47 
        Central Orange-1
33
29
39 
        Central Orange-2
33
42
39 
        Coachella Vly
56
46
44 
        E San Bernardino
42
46
39 
        E San Fernando Vly
38
29
41 
        E San Gabriel V-1
50
29
42 
        E San Gabriel V-2
38
46
42 
        East Riverside CO
37
28
 
        Hemet/San Jacinto
37
29
41 
        Hesperia
33
20
41 
        Lake Elsinore
37
38
41 
        Metro Riverside CO
50
55
44 
        N Coastal Orange
33
46
23 
        NW Coastal LA
38
33
41 
        NW San Bernardino
50
46
39 
        Norco/Corona
38
46
44 
        North Orange CO
33
38
40 
        Perris Vly
38
38
41 
        Phelan
42
29
42 
        Pomona Walnut Vly
38
37
37 
        S Central LA CO
29
25
38 
        S San Gabriel Vly
33
25
 
        SW Coastal LA
38
38
41 
        SW San Bernardino
38
21
39 
        Saddleback Vly
33
29
41 
        San Gabriel Mts
42
21
41 
        Santa Clarita Vly
38
46
39 
        South Coastal LA
33
29
37 
        Southeast LA CO
25
38
39 
        Temecula Vly
33
33
41 
        Trona
29
28
42 
        Twentynine Palms
33
37
41 
        Victorville
37
28
41 
        W San Bernardino M
46
29
41 
        W San Fernando Vly
38
29
41 
        W San Gabriel Vly
38
25
47 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
31 
Mono Lake
aqi not available
aqi not available
29 
Monterey Bay Area
        Carmel Valley
Good
Good
 
        Davenport
Good
Good
 
        Hollister
Good
Good
34 
        King City
Good
Good
41 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
39 
        Salinas
Good
Good
41 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
36 
        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
38 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
26 
Quincy
aqi not available
aqi not available
16 
Red Bluff
aqi not available
aqi not available
 
Redding
55
aqi not available
79 
Sacramento Area
        Arden Arcade-Del Paso Manor
66
80
36 
        Auburn
42
53
37 
        Colfax
42
53
37 
        Cool
aqi not available
aqi not available
 
        Davis
50
57
38 
        Elk Grove
66
80
36 
        Folsom
66
80
37 
        Lincoln
42
53
 
        Natomas
66
80
 
        North Highlands
66
80
36 
        Placerville
aqi not available
aqi not available
35 
        Rio Vista
50
57
30 
        Roseville-Rocklin
42
53
32 
        Sacramento
66
80
35 
        Sloughhouse
66
80
34 
        Vacaville
50
57
33 
        Woodland
50
57
38 
San Diego Area
        San Diego Coast
Good
Good
40 
        San Diego Foothills
Good
Good
42 
        San Diego Mesa and Inland Valley
Good
Good
42 
San Francisco Area
        Concord
38
50
36 
        Fairfield
38
50
37 
        Fremont
33
42
49 
        Livermore
38
50
36 
        Napa
46
57
43 
        Oakland
42
55
34 
        Redwood City
33
42
49 
        San Francisco
42
55
32 
        San Jose
42
46
38 
        San Rafael
46
57
 
        Santa Rosa
46
57
36 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
50
50
 
        Fresno
46
40
39 
        Hanford
50
46
38 
        Madera
42
33
35 
        Merced
33
33
 
        Modesto
38
38
37 
        Stockton
29
34
31 
        Visalia
50
38
38 
San Luis Obispo County
        Atascadero
35
35
41 
        Carrizo Plains
35
35
35 
        Morro Bay
35
35
41 
        Nipomo
63
45
95 
        Paso Robles
35
35
43 
        Red Hills
36
36
32 
        San Luis Obispo
35
35
40 
Santa Barbara County
        Carpinteria
Good
Good
 
        Gaviota Coast
Moderate
Good
40 
        Goleta
Moderate
Good
36 
        Lompoc
Moderate
Good
44 
        Paradise Road
Good
Good
38 
        Santa Barbara
Moderate
Good
41 
        Santa Maria
Moderate
Good
38 
        Santa Ynez
Good
Good
38 
Santa Rosa Rancheria
aqi not available
aqi not available
38 
Sequoia/Kings Canyon National Parks
44
40
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
46 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
36 
Ventura County Area
        Ojai
40
40
39 
        Oxnard
50
50
40 
        Piru
40
40
39 
        Simi Valley
45
50
39 
        Thousand Oaks
45
50
38 
Western Nevada County
40
40
32 
Willits
aqi not available
aqi not available
 
Willows
Good
Good
33 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
38
36
37 
Yuba City/Marysville
Good
Good
32 
Yucca Vly
33
20
 
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.