California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170120_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
Fri
Jan 20
Sat
Jan 21
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
12 
Chester
aqi not available
aqi not available
 
Chico
Good
Good
33 
Death Valley National Park
35 
33 
38 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
29 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
 
Imperial Valley
42 
53 
31 
Joshua Tree National Park
aqi not available
aqi not available
40 
La Grange
aqi not available
aqi not available
68 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
33 
34 
41 
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
10 
Los Angeles Area
        Antelope Vly
20 
28 
36 
        Anza Vly
42 
37 
42 
        Banning
28 
46 
38 
        Barstow
28 
37 
38 
        Big Bear Lake
38 
37 
 
        C San Bernardino M
38 
37 
41 
        C San Bernardino-1
50 
38 
36 
        C San Bernardino-2
50 
38 
36 
        Capistrano Vly
42 
50 
39 
        Central Coastal
42 
42 
43 
        Central LA CO
33 
33 
48 
        Central Orange-1
38 
33 
34 
        Central Orange-2
50 
33 
43 
        Coachella Vly
50 
46 
43 
        E San Bernardino
42 
37 
38 
        E San Fernando Vly
33 
28 
48 
        E San Gabriel V-1
42 
29 
33 
        E San Gabriel V-2
29 
29 
33 
        East Riverside CO
28 
37 
41 
        Hemet/San Jacinto
33 
42 
42 
        Hesperia
21 
28 
42 
        Lake Elsinore
50 
37 
41 
        Metro Riverside CO
55 
46 
37 
        N Coastal Orange
42 
29 
43 
        NW Coastal LA
33 
33 
40 
        NW San Bernardino
46 
42 
32 
        Norco/Corona
50 
38 
37 
        North Orange CO
46 
29 
36 
        Perris Vly
50 
29 
35 
        Phelan
28 
28 
38 
        Pomona Walnut Vly
33 
29 
28 
        S Central LA CO
29 
21 
38 
        S San Gabriel Vly
29 
28 
 
        SW Coastal LA
46 
29 
14 
        SW San Bernardino
28 
33 
32 
        Saddleback Vly
38 
50 
39 
        San Gabriel Mts
38 
21 
35 
        Santa Clarita Vly
29 
28 
35 
        South Coastal LA
42 
28 
34 
        Southeast LA CO
42 
29 
34 
        Temecula Vly
46 
29 
42 
        Trona
28 
28 
34 
        Twentynine Palms
28 
37 
38 
        Victorville
28 
37 
36 
        W San Bernardino M
38 
28 
41 
        W San Fernando Vly
33 
28 
48 
        W San Gabriel Vly
33 
21 
35 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
34 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
38 
        Davenport
Good
Good
 
        Hollister
Good
Good
37 
        King City
Good
Good
38 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
 
        Salinas
Good
Good
39 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
37 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
Good
Good
 
Owens Lake
aqi not available
aqi not available
10 
Paradise
Good
Good
40 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
28 
Quincy
aqi not available
aqi not available
19 
Red Bluff
aqi not available
aqi not available
 
Redding
40 
35 
30 
Sacramento Area
        Arden Arcade-Del Paso Manor
29 
33 
31 
        Auburn
21 
25 
35 
        Colfax
21 
25 
25 
        Cool
aqi not available
aqi not available
 
        Davis
46 
33 
34 
        Elk Grove
29 
33 
35 
        Folsom
29 
33 
35 
        Lincoln
21 
25 
33 
        Natomas
29 
33 
37 
        North Highlands
29 
33 
36 
        Placerville
aqi not available
aqi not available
43 
        Rio Vista
46 
33 
12 
        Roseville-Rocklin
21 
25 
41 
        Sacramento
29 
33 
32 
        Sloughhouse
29 
33 
35 
        Vacaville
46 
33 
40 
        Woodland
46 
33 
30 
San Diego Area
        San Diego Coast
Good
Good
41 
        San Diego Foothills
Good
Good
42 
        San Diego Mesa and Inland Valley
Good
Good
37 
San Francisco Area
        Concord
38 
46 
35 
        Fairfield
38 
46 
36 
        Fremont
42 
33 
37 
        Livermore
38 
46 
36 
        Napa
46 
50 
34 
        Oakland
42 
46 
37 
        Redwood City
42 
33 
37 
        San Francisco
42 
46 
37 
        San Jose
38 
42 
56 
        San Rafael
46 
50 
43 
        Santa Rosa
46 
50 
33 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
27 
37 
51 
        Fresno
35 
37 
35 
        Hanford
29 
38 
34 
        Madera
35 
34 
36 
        Merced
39 
31 
34 
        Modesto
37 
29 
32 
        Stockton
38 
29 
29 
        Visalia
31 
39 
30 
San Luis Obispo County
        Atascadero
36 
34 
39 
        Carrizo Plains
39 
38 
42 
        Morro Bay
35 
34 
39 
        Nipomo
35 
36 
41 
        Paso Robles
36 
34 
39 
        Red Hills
39 
38 
41 
        San Luis Obispo
36 
35 
38 
Santa Barbara County
        Carpinteria
Good
Good
38 
        Gaviota Coast
Good
Good
40 
        Goleta
Good
Good
35 
        Lompoc
Good
Good
43 
        Paradise Road
Good
Good
37 
        Santa Barbara
Good
Good
36 
        Santa Maria
Good
Good
36 
        Santa Ynez
Good
Good
37 
Santa Rosa Rancheria
aqi not available
aqi not available
33 
Sequoia/Kings Canyon National Parks
36 
36 
34 
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
 
Ventura County Area
        Ojai
40 
40 
38 
        Oxnard
35 
35 
40 
        Piru
40 
40 
40 
        Simi Valley
40 
40 
39 
        Thousand Oaks
40 
40 
40 
Western Nevada County
46 
46 
42 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
37 
36 
25 
Yuba City/Marysville
Good
Good
30 
Yucca Vly
21 
28 
 
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.