California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170322_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.
 - 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.
 - 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 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 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
Mar 22
Thu
Mar 23
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
28 
Bishop Paiute Tribe
aqi not available
aqi not available
28 
Chester
aqi not available
aqi not available
 
Chico
Good
Good
37 
Death Valley National Park
40 
44 
44 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
55 
Greeley Hill
aqi not available
aqi not available
10 
Gridley
Good
Good
13 
Imperial Valley
53 
46 
52 
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
38 
38 
 
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
44 
Los Angeles Area
        Antelope Vly
37 
37 
 
        Anza Vly
46 
42 
38 
        Banning
50 
46 
36 
        Barstow
46 
37 
40 
        Big Bear Lake
46 
46 
 
        C San Bernardino M
46 
46 
40 
        C San Bernardino-1
59 
66 
41 
        C San Bernardino-2
59 
59 
41 
        Capistrano Vly
37 
42 
34 
        Central Coastal
37 
42 
37 
        Central LA CO
28 
46 
44 
        Central Orange-1
25 
42 
36 
        Central Orange-2
29 
53 
37 
        Coachella Vly
67 
50 
46 
        E San Bernardino
53 
55 
36 
        E San Fernando Vly
33 
42 
44 
        E San Gabriel V-1
46 
57 
35 
        E San Gabriel V-2
38 
53 
35 
        East Riverside CO
37 
37 
42 
        Hemet/San Jacinto
46 
55 
38 
        Hesperia
46 
46 
40 
        Lake Elsinore
53 
59 
38 
        Metro Riverside CO
66 
70 
36 
        N Coastal Orange
29 
42 
37 
        NW Coastal LA
28 
42 
40 
        NW San Bernardino
53 
61 
35 
        Norco/Corona
55 
57 
36 
        North Orange CO
33 
50 
36 
        Perris Vly
53 
66 
33 
        Phelan
46 
46 
40 
        Pomona Walnut Vly
42 
59 
31 
        S Central LA CO
21 
38 
 
        S San Gabriel Vly
37 
38 
 
        SW Coastal LA
28 
46 
40 
        SW San Bernardino
57 
55 
35 
        Saddleback Vly
37 
37 
36 
        San Gabriel Mts
38 
50 
40 
        Santa Clarita Vly
46 
42 
40 
        South Coastal LA
37 
50 
33 
        Southeast LA CO
28 
53 
36 
        Temecula Vly
38 
50 
38 
        Trona
37 
37 
43 
        Twentynine Palms
46 
46 
40 
        Victorville
37 
37 
38 
        W San Bernardino M
46 
46 
40 
        W San Fernando Vly
37 
46 
44 
        W San Gabriel Vly
37 
46 
34 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
40 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
33 
        Davenport
Good
Good
 
        Hollister
Good
Good
35 
        King City
Good
Good
36 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
34 
        Salinas
Good
Good
36 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
34 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
55 
Paradise
Good
Good
42 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
11 
Red Bluff
aqi not available
aqi not available
 
Redding
46 
aqi not available
45 
Sacramento Area
        Arden Arcade-Del Paso Manor
38 
53 
31 
        Auburn
21 
29 
37 
        Colfax
21 
29 
32 
        Cool
aqi not available
aqi not available
 
        Davis
33 
42 
38 
        Elk Grove
38 
53 
33 
        Folsom
38 
53 
37 
        Lincoln
21 
29 
35 
        Natomas
38 
53 
30 
        North Highlands
38 
53 
34 
        Placerville
aqi not available
aqi not available
44 
        Rio Vista
33 
42 
25 
        Roseville-Rocklin
21 
29 
33 
        Sacramento
38 
53 
31 
        Sloughhouse
38 
53 
33 
        Vacaville
33 
42 
35 
        Woodland
33 
42 
35 
San Diego Area
        San Diego Coast
Good
50 
30 
        San Diego Foothills
Good
50 
35 
        San Diego Mesa and Inland Valley
Good
50 
32 
San Francisco Area
        Concord
37 
41 
40 
        Fairfield
37 
41 
39 
        Fremont
35 
35 
38 
        Livermore
37 
41 
37 
        Napa
35 
42 
37 
        Oakland
37 
42 
40 
        Redwood City
35 
35 
38 
        San Francisco
37 
42 
39 
        San Jose
37 
42 
41 
        San Rafael
35 
42 
48 
        Santa Rosa
35 
42 
39 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
37 
Good
37 
        Fresno
37 
Good
40 
        Hanford
36 
Good
38 
        Madera
34 
Good
35 
        Merced
38 
Good
38 
        Modesto
29 
Good
34 
        Stockton
31 
Good
31 
        Visalia
34 
Good
40 
San Luis Obispo County
        Atascadero
27 
34 
38 
        Carrizo Plains
29 
35 
37 
        Morro Bay
28 
35 
39 
        Nipomo
33 
50 
40 
        Paso Robles
30 
35 
38 
        Red Hills
32 
36 
40 
        San Luis Obispo
25 
36 
40 
Santa Barbara County
        Carpinteria
Good
Good
31 
        Gaviota Coast
Good
Good
34 
        Goleta
Good
Good
34 
        Lompoc
Good
Good
38 
        Paradise Road
Good
Good
36 
        Santa Barbara
Good
Good
39 
        Santa Maria
Good
Good
28 
        Santa Ynez
Good
Good
35 
Santa Rosa Rancheria
aqi not available
aqi not available
37 
Sequoia/Kings Canyon National Parks
39 
45 
42 
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
32 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
43 
Ventura County Area
        Ojai
40 
40 
35 
        Oxnard
40 
40 
36 
        Piru
40 
40 
39 
        Simi Valley
40 
40 
39 
        Thousand Oaks
40 
40 
39 
Western Nevada County
aqi not available
aqi not available
45 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
38 
40 
34 
Yuba City/Marysville
Good
Good
28 
Yucca Vly
37 
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.