California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170423_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
Sun
Apr 23
Mon
Apr 24
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
41 
Death Valley National Park
43 
44 
58 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
28 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
41 
Imperial Valley
68 
53 
112 
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 
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
36 
Los Angeles Area
        Antelope Vly
38 
46 
44 
        Anza Vly
53 
53 
 
        Banning
132 
100 
 
        Barstow
46 
46 
47 
        Big Bear Lake
46 
67 
 
        C San Bernardino M
67 
100 
 
        C San Bernardino-1
67 
67 
 
        C San Bernardino-2
63 
67 
 
        Capistrano Vly
50 
50 
 
        Central Coastal
46 
67 
 
        Central LA CO
67 
67 
 
        Central Orange-1
46 
46 
 
        Central Orange-2
53 
67 
 
        Coachella Vly
67 
67 
 
        E San Bernardino
67 
67 
 
        E San Fernando Vly
67 
53 
 
        E San Gabriel V-1
57 
100 
 
        E San Gabriel V-2
67 
100 
 
        East Riverside CO
50 
50 
71 
        Hemet/San Jacinto
55 
55 
 
        Hesperia
50 
50 
84 
        Lake Elsinore
67 
67 
 
        Metro Riverside CO
72 
67 
 
        N Coastal Orange
67 
67 
 
        NW Coastal LA
67 
50 
 
        NW San Bernardino
100 
67 
 
        Norco/Corona
67 
67 
 
        North Orange CO
59 
61 
 
        Perris Vly
67 
67 
 
        Phelan
50 
67 
74 
        Pomona Walnut Vly
67 
55 
 
        S Central LA CO
38 
67 
 
        S San Gabriel Vly
46 
46 
 
        SW Coastal LA
46 
46 
 
        SW San Bernardino
67 
67 
 
        Saddleback Vly
67 
46 
 
        San Gabriel Mts
50 
50 
 
        Santa Clarita Vly
67 
67 
 
        South Coastal LA
42 
50 
 
        Southeast LA CO
53 
53 
 
        Temecula Vly
67 
67 
 
        Trona
42 
42 
46 
        Twentynine Palms
42 
67 
47 
        Victorville
50 
50 
54 
        W San Bernardino M
53 
67 
 
        W San Fernando Vly
46 
50 
 
        W San Gabriel Vly
55 
100 
 
Mammoth Lakes
aqi not available
aqi not available
13 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
39 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
39 
        Davenport
Good
Good
 
        Hollister
Good
Good
39 
        King City
Good
Good
41 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
40 
        Salinas
Good
Good
41 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
37 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
36 
Paradise
Good
Good
33 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
13 
Red Bluff
aqi not available
aqi not available
 
Redding
60 
61 
48 
Sacramento Area
        Arden Arcade-Del Paso Manor
29 
29 
36 
        Auburn
21 
21 
37 
        Colfax
21 
21 
44 
        Cool
aqi not available
aqi not available
39 
        Davis
29 
29 
41 
        Elk Grove
29 
29 
35 
        Folsom
29 
29 
35 
        Lincoln
21 
21 
33 
        Natomas
29 
29 
31 
        North Highlands
29 
29 
 
        Placerville
aqi not available
aqi not available
42 
        Rio Vista
29 
29 
        Roseville-Rocklin
21 
21 
36 
        Sacramento
29 
29 
36 
        Sloughhouse
29 
29 
35 
        Vacaville
29 
29 
35 
        Woodland
29 
29 
33 
San Diego Area
        San Diego Coast
Moderate
Good
51 
        San Diego Foothills
Unhealthy for Sensitive Groups
Moderate
71 
        San Diego Mesa and Inland Valley
Moderate
Moderate
62 
San Francisco Area
        Concord
44 
44 
41 
        Fairfield
44 
44 
40 
        Fremont
44 
43 
46 
        Livermore
44 
44 
37 
        Napa
42 
41 
38 
        Oakland
50 
42 
43 
        Redwood City
44 
43 
46 
        San Francisco
50 
42 
36 
        San Jose
42 
43 
43 
        San Rafael
42 
41 
39 
        Santa Rosa
42 
41 
37 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
43 
42 
51 
        Fresno
44 
38 
41 
        Hanford
45 
40 
43 
        Madera
41 
38 
42 
        Merced
39 
37 
39 
        Modesto
38 
35 
42 
        Stockton
36 
34 
35 
        Visalia
46 
50 
40 
San Luis Obispo County
        Atascadero
44 
42 
44 
        Carrizo Plains
46 
45 
43 
        Morro Bay
42 
40 
38 
        Nipomo
69 
73 
283 
        Paso Robles
45 
44 
44 
        Red Hills
48 
46 
35 
        San Luis Obispo
45 
44 
37 
Santa Barbara County
        Carpinteria
Good
Good
32 
        Gaviota Coast
Good
Good
31 
        Goleta
Good
Good
34 
        Lompoc
Good
Good
45 
        Paradise Road
Good
Good
29 
        Santa Barbara
Good
Good
40 
        Santa Maria
Good
Good
65 
        Santa Ynez
Good
Good
33 
Santa Rosa Rancheria
aqi not available
aqi not available
45 
Sequoia/Kings Canyon National Parks
47 
44 
53 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
13 
Truckee
aqi not available
aqi not available
24 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
46 
Ventura County Area
        Ojai
60 
55 
50 
        Oxnard
60 
55 
42 
        Piru
60 
55 
51 
        Simi Valley
60 
55 
55 
        Thousand Oaks
55 
55 
39 
Western Nevada County
65 
70 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
41 
41 
36 
Yuba City/Marysville
Good
Good
32 
Yucca Vly
50 
50 
 
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.