California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170325_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
Mar 25
Sun
Mar 26
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
31 
Bishop Paiute Tribe
aqi not available
aqi not available
31 
Chester
aqi not available
aqi not available
 
Chico
Good
Good
38 
Death Valley National Park
41 
38 
46 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
11 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
18 
Imperial Valley
73 
51 
60 
Joshua Tree National Park
aqi not available
aqi not available
61 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
37 
36 
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
14 
Los Angeles Area
        Antelope Vly
37 
50 
43 
        Anza Vly
46 
50 
47 
        Banning
67 
67 
50 
        Barstow
46 
46 
43 
        Big Bear Lake
67 
67 
 
        C San Bernardino M
67 
67 
66 
        C San Bernardino-1
46 
57 
50 
        C San Bernardino-2
67 
53 
50 
        Capistrano Vly
37 
46 
45 
        Central Coastal
37 
42 
45 
        Central LA CO
37 
59 
53 
        Central Orange-1
42 
46 
39 
        Central Orange-2
42 
38 
44 
        Coachella Vly
67 
67 
61 
        E San Bernardino
67 
67 
50 
        E San Fernando Vly
38 
53 
53 
        E San Gabriel V-1
46 
57 
45 
        E San Gabriel V-2
46 
57 
45 
        East Riverside CO
37 
37 
71 
        Hemet/San Jacinto
67 
67 
47 
        Hesperia
46 
46 
47 
        Lake Elsinore
67 
67 
48 
        Metro Riverside CO
67 
72 
46 
        N Coastal Orange
38 
33 
44 
        NW Coastal LA
37 
53 
41 
        NW San Bernardino
46 
67 
47 
        Norco/Corona
67 
67 
46 
        North Orange CO
46 
46 
39 
        Perris Vly
67 
67 
46 
        Phelan
46 
46 
50 
        Pomona Walnut Vly
37 
61 
38 
        S Central LA CO
38 
42 
43 
        S San Gabriel Vly
46 
46 
 
        SW Coastal LA
38 
38 
40 
        SW San Bernardino
46 
67 
47 
        Saddleback Vly
37 
46 
45 
        San Gabriel Mts
37 
46 
45 
        Santa Clarita Vly
37 
55 
45 
        South Coastal LA
37 
42 
32 
        Southeast LA CO
37 
42 
39 
        Temecula Vly
38 
57 
47 
        Trona
37 
37 
50 
        Twentynine Palms
46 
46 
43 
        Victorville
37 
37 
44 
        W San Bernardino M
46 
46 
66 
        W San Fernando Vly
37 
46 
53 
        W San Gabriel Vly
46 
50 
44 
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
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
36 
        Salinas
Good
Good
36 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
14 
Paradise
Good
Good
39 
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
46 
50 
38 
Sacramento Area
        Arden Arcade-Del Paso Manor
50 
42 
45 
        Auburn
33 
29 
39 
        Colfax
33 
29 
37 
        Cool
aqi not available
aqi not available
38 
        Davis
50 
38 
41 
        Elk Grove
50 
42 
39 
        Folsom
50 
42 
39 
        Lincoln
33 
29 
39 
        Natomas
50 
42 
32 
        North Highlands
50 
42 
39 
        Placerville
aqi not available
aqi not available
44 
        Rio Vista
50 
38 
28 
        Roseville-Rocklin
33 
29 
35 
        Sacramento
50 
42 
45 
        Sloughhouse
50 
42 
39 
        Vacaville
50 
38 
35 
        Woodland
50 
38 
36 
San Diego Area
        San Diego Coast
Good
Good
44 
        San Diego Foothills
Good
Good
47 
        San Diego Mesa and Inland Valley
Good
Good
45 
San Francisco Area
        Concord
41 
40 
39 
        Fairfield
41 
40 
38 
        Fremont
39 
37 
36 
        Livermore
41 
40 
37 
        Napa
42 
42 
52 
        Oakland
41 
40 
38 
        Redwood City
39 
37 
33 
        San Francisco
41 
40 
39 
        San Jose
40 
40 
40 
        San Rafael
42 
42 
40 
        Santa Rosa
42 
42 
35 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
46 
48 
43 
        Fresno
42 
42 
40 
        Hanford
38 
39 
42 
        Madera
42 
39 
40 
        Merced
37 
38 
55 
        Modesto
38 
46 
39 
        Stockton
33 
46 
31 
        Visalia
46 
46 
42 
San Luis Obispo County
        Atascadero
29 
33 
38 
        Carrizo Plains
30 
35 
38 
        Morro Bay
29 
32 
42 
        Nipomo
58 
53 
97 
        Paso Robles
31 
34 
38 
        Red Hills
35 
36 
38 
        San Luis Obispo
34 
36 
43 
Santa Barbara County
        Carpinteria
Good
Good
31 
        Gaviota Coast
Good
Good
36 
        Goleta
Good
Good
37 
        Lompoc
Good
Good
45 
        Paradise Road
Good
Good
39 
        Santa Barbara
Good
Good
39 
        Santa Maria
Good
Good
16 
        Santa Ynez
Good
Good
40 
Santa Rosa Rancheria
aqi not available
aqi not available
38 
Sequoia/Kings Canyon National Parks
39 
39 
44 
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
35 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
41 
Ventura County Area
        Ojai
40 
40 
40 
        Oxnard
40 
40 
41 
        Piru
40 
40 
44 
        Simi Valley
40 
40 
44 
        Thousand Oaks
40 
40 
43 
Western Nevada County
45 
47 
46 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
39 
38 
42 
Yuba City/Marysville
Good
Good
33 
Yucca Vly
46 
46 
 
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.