California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170222_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
Wed
Feb 22
Thu
Feb 23
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
25 
Bishop Paiute Tribe
aqi not available
aqi not available
25 
Chester
aqi not available
aqi not available
 
Chico
Good
Good
36 
Death Valley National Park
42 
42 
 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
253 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
18 
Imperial Valley
93 
42 
417 
Joshua Tree National Park
aqi not available
aqi not available
50 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
38 
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
25 
Los Angeles Area
        Antelope Vly
29 
29 
37 
        Anza Vly
42 
50 
44 
        Banning
50 
46 
44 
        Barstow
37 
37 
38 
        Big Bear Lake
37 
37 
 
        C San Bernardino M
46 
33 
44 
        C San Bernardino-1
63 
68 
45 
        C San Bernardino-2
57 
61 
45 
        Capistrano Vly
42 
50 
44 
        Central Coastal
42 
42 
44 
        Central LA CO
42 
50 
42 
        Central Orange-1
33 
57 
37 
        Central Orange-2
53 
55 
44 
        Coachella Vly
63 
50 
49 
        E San Bernardino
50 
50 
46 
        E San Fernando Vly
42 
33 
42 
        E San Gabriel V-1
50 
59 
39 
        E San Gabriel V-2
46 
55 
39 
        East Riverside CO
37 
38 
51 
        Hemet/San Jacinto
50 
50 
44 
        Hesperia
37 
38 
 
        Lake Elsinore
57 
61 
44 
        Metro Riverside CO
68 
68 
44 
        N Coastal Orange
50 
46 
44 
        NW Coastal LA
46 
42 
40 
        NW San Bernardino
59 
63 
44 
        Norco/Corona
53 
66 
44 
        North Orange CO
42 
59 
40 
        Perris Vly
61 
68 
39 
        Phelan
42 
46 
41 
        Pomona Walnut Vly
50 
61 
38 
        S Central LA CO
33 
38 
38 
        S San Gabriel Vly
33 
42 
 
        SW Coastal LA
55 
46 
40 
        SW San Bernardino
50 
59 
44 
        Saddleback Vly
38 
38 
44 
        San Gabriel Mts
42 
55 
40 
        Santa Clarita Vly
37 
42 
37 
        South Coastal LA
55 
50 
34 
        Southeast LA CO
42 
57 
37 
        Temecula Vly
50 
55 
44 
        Trona
37 
33 
47 
        Twentynine Palms
37 
29 
38 
        Victorville
37 
38 
 
        W San Bernardino M
42 
50 
44 
        W San Fernando Vly
38 
42 
42 
        W San Gabriel Vly
42 
50 
40 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
38 
Mono Lake
aqi not available
aqi not available
253 
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
39 
        Salinas
Good
Good
39 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
Good
Good
 
Owens Lake
aqi not available
aqi not available
79 
Paradise
Good
Good
40 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
 
Red Bluff
aqi not available
aqi not available
 
Redding
42 
aqi not available
40 
Sacramento Area
        Arden Arcade-Del Paso Manor
50 
55 
34 
        Auburn
29 
46 
 
        Colfax
29 
46 
 
        Cool
aqi not available
aqi not available
 
        Davis
46 
53 
42 
        Elk Grove
50 
55 
37 
        Folsom
50 
55 
39 
        Lincoln
29 
46 
 
        Natomas
50 
55 
        North Highlands
50 
55 
39 
        Placerville
aqi not available
aqi not available
40 
        Rio Vista
46 
53 
 
        Roseville-Rocklin
29 
46 
34 
        Sacramento
50 
55 
35 
        Sloughhouse
50 
55 
37 
        Vacaville
46 
53 
 
        Woodland
46 
53 
 
San Diego Area
        San Diego Coast
Good
Good
41 
        San Diego Foothills
Good
Good
44 
        San Diego Mesa and Inland Valley
Moderate
Moderate
42 
San Francisco Area
        Concord
34 
42 
 
        Fairfield
34 
42 
38 
        Fremont
33 
40 
36 
        Livermore
34 
42 
 
        Napa
46 
53 
39 
        Oakland
42 
50 
34 
        Redwood City
33 
40 
34 
        San Francisco
42 
50 
37 
        San Jose
31 
38 
39 
        San Rafael
46 
53 
38 
        Santa Rosa
46 
53 
33 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
41 
Good
38 
        Fresno
39 
Good
39 
        Hanford
38 
Good
41 
        Madera
40 
Good
39 
        Merced
35 
Good
33 
        Modesto
34 
Good
37 
        Stockton
41 
Good
31 
        Visalia
39 
Good
37 
San Luis Obispo County
        Atascadero
36 
36 
37 
        Carrizo Plains
36 
36 
37 
        Morro Bay
34 
33 
38 
        Nipomo
92 
78 
186 
        Paso Robles
36 
36 
41 
        Red Hills
37 
37 
36 
        San Luis Obispo
34 
34 
39 
Santa Barbara County
        Carpinteria
Good
Good
37 
        Gaviota Coast
Good
Good
37 
        Goleta
Good
Good
34 
        Lompoc
Good
Good
38 
        Paradise Road
Good
Good
35 
        Santa Barbara
Good
Good
35 
        Santa Maria
Good
Good
77 
        Santa Ynez
Good
Good
35 
Santa Rosa Rancheria
aqi not available
aqi not available
38 
Sequoia/Kings Canyon National Parks
41 
41 
37 
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
41 
Ventura County Area
        Ojai
35 
35 
39 
        Oxnard
35 
35 
36 
        Piru
35 
35 
39 
        Simi Valley
35 
35 
39 
        Thousand Oaks
35 
35 
38 
Western Nevada County
38 
aqi not available
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
43 
41 
18 
Yuba City/Marysville
Good
Good
31 
Yucca Vly
37 
38 
 
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.