California
 
Data and Forecasts courtesy of:
 

 - 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 Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20180122_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
Mon
Jan 22
Tue
Jan 23
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
37 
Bishop Paiute Tribe
aqi not available
aqi not available
20 
Chester
aqi not available
aqi not available
33 
Chico
Good
Good
24 
Death Valley National Park
29
28
32 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
aqi not available
aqi not available
19 
Great Basin Air District
aqi not available
aqi not available
37 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
19 
Imperial Valley
53
53
38 
Joshua Tree National Park
aqi not available
aqi not available
38 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
31
31
30 
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
 
Los Angeles Area
        Antelope Vly
38
29
35 
        Anza Vly
59
50
43 
        Banning
37
38
38 
        Barstow
37
37
34 
        Big Bear Lake
37
37
 
        C San Bernardino M
38
37
37 
        C San Bernardino-1
72
55
34 
        C San Bernardino-2
68
53
34 
        Capistrano Vly
59
53
31 
        Central Coastal
55
55
31 
        Central LA CO
38
29
72 
        Central Orange-1
57
55
24 
        Central Orange-2
55
50
24 
        Coachella Vly
55
55
39 
        E San Bernardino
53
33
37 
        E San Fernando Vly
28
25
72 
        E San Gabriel V-1
59
42
31 
        E San Gabriel V-2
61
38
31 
        East Riverside CO
42
37
 
        Hemet/San Jacinto
38
37
43 
        Hesperia
42
29
35 
        Lake Elsinore
70
57
38 
        Metro Riverside CO
74
57
33 
        N Coastal Orange
55
55
 
        NW Coastal LA
37
33
42 
        NW San Bernardino
68
50
32 
        Norco/Corona
70
63
33 
        North Orange CO
68
55
32 
        Perris Vly
53
46
43 
        Phelan
55
42
40 
        Pomona Walnut Vly
70
50
28 
        S Central LA CO
29
29
31 
        S San Gabriel Vly
38
33
 
        SW Coastal LA
38
46
42 
        SW San Bernardino
72
59
32 
        Saddleback Vly
53
46
31 
        San Gabriel Mts
55
33
38 
        Santa Clarita Vly
38
38
38 
        South Coastal LA
33
38
26 
        Southeast LA CO
57
53
24 
        Temecula Vly
63
53
43 
        Trona
38
29
32 
        Twentynine Palms
37
37
34 
        Victorville
42
37
35 
        W San Bernardino M
55
38
37 
        W San Fernando Vly
29
29
72 
        W San Gabriel Vly
46
29
39 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
31 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
35 
        Davenport
Good
Good
 
        Hollister
Good
Good
        King City
Good
Good
34 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
35 
        Salinas
Good
Good
45 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
45 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
20 
Paradise
Good
Good
32 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
22 
Quincy
aqi not available
aqi not available
23 
Red Bluff
aqi not available
aqi not available
 
Redding
71
50
35 
Sacramento Area
        Arden Arcade-Del Paso Manor
63
84
36 
        Auburn
33
55
30 
        Colfax
33
55
30 
        Cool
aqi not available
aqi not available
 
        Davis
63
72
33 
        Elk Grove
63
84
35 
        Folsom
63
84
26 
        Lincoln
33
55
 
        Natomas
63
84
 
        North Highlands
63
84
24 
        Placerville
aqi not available
aqi not available
29 
        Rio Vista
63
72
75 
        Roseville-Rocklin
33
55
18 
        Sacramento
63
84
27 
        Sloughhouse
63
84
26 
        Vacaville
63
72
54 
        Woodland
63
72
55 
San Diego Area
        San Diego Coast
Moderate
Good
31 
        San Diego Foothills
Good
Good
39 
        San Diego Mesa and Inland Valley
Moderate
Moderate
33 
San Francisco Area
        Concord
50
50
61 
        Fairfield
50
50
52 
        Fremont
46
42
34 
        Livermore
50
50
24 
        Napa
53
57
58 
        Oakland
53
61
58 
        Redwood City
46
42
33 
        San Francisco
53
61
31 
        San Jose
53
55
64 
        San Rafael
53
57
39 
        Santa Rosa
53
57
31 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
76
64
50 
        Fresno
72
78
56 
        Hanford
74
85
34 
        Madera
62
62
36 
        Merced
66
66
44 
        Modesto
70
76
61 
        Stockton
72
70
61 
        Visalia
68
59
58 
San Luis Obispo County
        Atascadero
43
46
35 
        Carrizo Plains
31
30
36 
        Morro Bay
34
33
36 
        Nipomo
40
43
86 
        Paso Robles
46
49
37 
        Red Hills
31
30
33 
        San Luis Obispo
32
31
35 
Santa Barbara County
        Carpinteria
Good
Moderate
45 
        Gaviota Coast
Good
Good
36 
        Goleta
Good
Good
33 
        Lompoc
Good
Good
44 
        Paradise Road
Good
Good
37 
        Santa Barbara
Moderate
Moderate
34 
        Santa Maria
Good
Good
62 
        Santa Ynez
Good
Good
35 
Santa Rosa Rancheria
aqi not available
aqi not available
33 
Sequoia/Kings Canyon National Parks
34
36
64 
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
42 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
32 
Ventura County Area
        Ojai
40
40
40 
        Oxnard
35
40
 
        Piru
35
40
40 
        Simi Valley
35
40
39 
        Thousand Oaks
35
40
38 
Western Nevada County
45
40
45 
Willits
aqi not available
aqi not available
 
Willows
Good
Good
27 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
33
33
35 
Yuba City/Marysville
Good
Good
29 
Yucca Vly
42
29
 
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.