California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170121_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: 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
Jan 21
Sun
Jan 22
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
Bishop Paiute Tribe
aqi not available
aqi not available
Chester
aqi not available
aqi not available
 
Chico
Good
Good
31 
Death Valley National Park
33 
aqi not available
33 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
 
Imperial Valley
53 
53 
42 
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
34 
aqi not available
42 
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
27 
Los Angeles Area
        Antelope Vly
28 
37 
37 
        Anza Vly
37 
37 
42 
        Banning
46 
46 
 
        Barstow
37 
37 
36 
        Big Bear Lake
37 
37 
 
        C San Bernardino M
37 
37 
31 
        C San Bernardino-1
38 
50 
31 
        C San Bernardino-2
38 
46 
31 
        Capistrano Vly
50 
37 
32 
        Central Coastal
42 
38 
32 
        Central LA CO
33 
38 
36 
        Central Orange-1
33 
37 
25 
        Central Orange-2
33 
46 
25 
        Coachella Vly
46 
46 
41 
        E San Bernardino
37 
46 
33 
        E San Fernando Vly
28 
33 
36 
        E San Gabriel V-1
29 
28 
19 
        E San Gabriel V-2
29 
28 
19 
        East Riverside CO
37 
37 
 
        Hemet/San Jacinto
42 
38 
42 
        Hesperia
28 
37 
40 
        Lake Elsinore
37 
46 
41 
        Metro Riverside CO
46 
50 
20 
        N Coastal Orange
29 
46 
24 
        NW Coastal LA
33 
46 
25 
        NW San Bernardino
42 
38 
31 
        Norco/Corona
38 
38 
25 
        North Orange CO
29 
37 
25 
        Perris Vly
29 
50 
21 
        Phelan
28 
29 
41 
        Pomona Walnut Vly
29 
38 
15 
        S Central LA CO
21 
33 
        S San Gabriel Vly
28 
37 
 
        SW Coastal LA
29 
50 
24 
        SW San Bernardino
33 
28 
31 
        Saddleback Vly
50 
37 
32 
        San Gabriel Mts
21 
37 
31 
        Santa Clarita Vly
28 
37 
 
        South Coastal LA
28 
50 
31 
        Southeast LA CO
29 
37 
25 
        Temecula Vly
29 
33 
42 
        Trona
28 
37 
39 
        Twentynine Palms
37 
28 
36 
        Victorville
37 
37 
39 
        W San Bernardino M
28 
38 
31 
        W San Fernando Vly
28 
33 
36 
        W San Gabriel Vly
21 
37 
31 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
aqi not available
37 
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
18 
        Salinas
Good
Good
18 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
Good
Good
 
Owens Lake
aqi not available
aqi not available
27 
Paradise
Good
Good
38 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
55 
Red Bluff
aqi not available
aqi not available
 
Redding
35 
35 
31 
Sacramento Area
        Arden Arcade-Del Paso Manor
29 
25 
26 
        Auburn
25 
17 
35 
        Colfax
25 
17 
36 
        Cool
aqi not available
aqi not available
 
        Davis
29 
25 
31 
        Elk Grove
29 
25 
31 
        Folsom
29 
25 
32 
        Lincoln
25 
17 
30 
        Natomas
29 
25 
30 
        North Highlands
29 
25 
30 
        Placerville
aqi not available
aqi not available
42 
        Rio Vista
29 
25 
30 
        Roseville-Rocklin
25 
17 
38 
        Sacramento
29 
25 
26 
        Sloughhouse
29 
25 
31 
        Vacaville
29 
25 
45 
        Woodland
29 
25 
32 
San Diego Area
        San Diego Coast
Good
Good
46 
        San Diego Foothills
Good
Good
42 
        San Diego Mesa and Inland Valley
Good
Good
41 
San Francisco Area
        Concord
46 
42 
34 
        Fairfield
46 
42 
32 
        Fremont
33 
38 
34 
        Livermore
46 
42 
30 
        Napa
50 
46 
30 
        Oakland
46 
42 
38 
        Redwood City
33 
38 
34 
        San Francisco
46 
42 
39 
        San Jose
42 
38 
18 
        San Rafael
50 
46 
30 
        Santa Rosa
50 
46 
28 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
37 
Good
28 
        Fresno
37 
Good
19 
        Hanford
38 
Good
22 
        Madera
34 
Good
26 
        Merced
31 
Good
23 
        Modesto
29 
Good
20 
        Stockton
29 
Good
27 
        Visalia
39 
Good
35 
San Luis Obispo County
        Atascadero
34 
36 
18 
        Carrizo Plains
38 
39 
33 
        Morro Bay
34 
35 
20 
        Nipomo
36 
34 
25 
        Paso Robles
34 
36 
18 
        Red Hills
38 
39 
34 
        San Luis Obispo
35 
33 
20 
Santa Barbara County
        Carpinteria
Good
aqi not available
19 
        Gaviota Coast
Good
aqi not available
37 
        Goleta
Good
aqi not available
26 
        Lompoc
Good
aqi not available
38 
        Paradise Road
Good
aqi not available
32 
        Santa Barbara
Good
aqi not available
35 
        Santa Maria
Good
aqi not available
21 
        Santa Ynez
Good
aqi not available
18 
Santa Rosa Rancheria
aqi not available
aqi not available
19 
Sequoia/Kings Canyon National Parks
36 
aqi not available
29 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
10 
Truckee
aqi not available
aqi not available
 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
 
Ventura County Area
        Ojai
40 
40 
25 
        Oxnard
40 
40 
23 
        Piru
40 
40 
11 
        Simi Valley
40 
40 
20 
        Thousand Oaks
40 
40 
20 
Western Nevada County
46 
46 
42 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
36 
aqi not available
31 
Yuba City/Marysville
Good
Good
35 
Yucca Vly
28 
37 
 
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.