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_20171218_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
Mon
Dec 18
Tue
Dec 19
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
62 
Bishop Paiute Tribe
aqi not available
aqi not available
62 
Chester
aqi not available
aqi not available
57 
Chico
Moderate
Moderate
55 
Death Valley National Park
29
aqi not available
33 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
aqi not available
aqi not available
Great Basin Air District
aqi not available
aqi not available
37 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Moderate
Moderate
72 
Imperial Valley
53
76
44 
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
32
aqi not available
24 
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
10 
Los Angeles Area
        Antelope Vly
42
42
41 
        Anza Vly
55
70
35 
        Banning
46
37
37 
        Barstow
37
37
16 
        Big Bear Lake
38
38
 
        C San Bernardino M
50
46
38 
        C San Bernardino-1
84
80
42 
        C San Bernardino-2
82
66
42 
        Capistrano Vly
57
72
26 
        Central Coastal
55
57
26 
        Central LA CO
72
59
69 
        Central Orange-1
55
70
41 
        Central Orange-2
57
68
41 
        Coachella Vly
55
57
36 
        E San Bernardino
63
63
29 
        E San Fernando Vly
57
57
37 
        E San Gabriel V-1
74
63
29 
        E San Gabriel V-2
70
59
29 
        East Riverside CO
50
46
 
        Hemet/San Jacinto
55
50
35 
        Hesperia
50
46
51 
        Lake Elsinore
68
80
25 
        Metro Riverside CO
80
78
58 
        N Coastal Orange
55
57
69 
        NW Coastal LA
72
61
69 
        NW San Bernardino
76
68
42 
        Norco/Corona
63
76
48 
        North Orange CO
57
80
41 
        Perris Vly
80
66
35 
        Phelan
66
61
36 
        Pomona Walnut Vly
76
66
19 
        S Central LA CO
57
53
18 
        S San Gabriel Vly
57
55
 
        SW Coastal LA
72
68
69 
        SW San Bernardino
72
68
42 
        Saddleback Vly
57
63
41 
        San Gabriel Mts
70
59
32 
        Santa Clarita Vly
74
53
32 
        South Coastal LA
72
63
69 
        Southeast LA CO
61
68
41 
        Temecula Vly
59
74
35 
        Trona
46
46
34 
        Twentynine Palms
37
37
16 
        Victorville
50
46
21 
        W San Bernardino M
66
59
42 
        W San Fernando Vly
53
55
37 
        W San Gabriel Vly
66
59
32 
Mammoth Lakes
aqi not available
aqi not available
37 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
aqi not available
41 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
26 
        Davenport
Good
Good
 
        Hollister
Good
Good
23 
        King City
Good
Good
40 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
25 
        Salinas
Good
Good
40 
        San Lorenzo Valley
Moderate
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
10 
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
77 
Red Bluff
aqi not available
aqi not available
 
Redding
aqi not available
aqi not available
77 
Sacramento Area
        Arden Arcade-Del Paso Manor
93
102
15 
        Auburn
57
68
34 
        Colfax
57
68
24 
        Cool
aqi not available
aqi not available
 
        Davis
74
76
69 
        Elk Grove
93
102
56 
        Folsom
93
102
29 
        Lincoln
57
68
 
        Natomas
93
102
 
        North Highlands
93
102
19 
        Placerville
aqi not available
aqi not available
31 
        Rio Vista
74
76
75 
        Roseville-Rocklin
57
68
45 
        Sacramento
93
102
78 
        Sloughhouse
93
102
44 
        Vacaville
74
76
72 
        Woodland
74
76
64 
San Diego Area
        San Diego Coast
Moderate
aqi not available
29 
        San Diego Foothills
Good
aqi not available
39 
        San Diego Mesa and Inland Valley
Moderate
aqi not available
37 
San Francisco Area
        Concord
59
Moderate
81 
        Fairfield
59
Moderate
73 
        Fremont
50
Moderate
49 
        Livermore
59
Moderate
48 
        Napa
66
Moderate
58 
        Oakland
63
Moderate
80 
        Redwood City
50
Moderate
49 
        San Francisco
63
Moderate
79 
        San Jose
59
Moderate
62 
        San Rafael
66
Moderate
57 
        Santa Rosa
66
Moderate
35 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
68
Moderate
80 
        Fresno
80
Moderate
67 
        Hanford
85
Moderate
 
        Madera
76
Moderate
19 
        Merced
70
Moderate
32 
        Modesto
50
Good
80 
        Stockton
46
Good
78 
        Visalia
72
Moderate
60 
San Luis Obispo County
        Atascadero
59
58
70 
        Carrizo Plains
37
36
25 
        Morro Bay
49
47
 
        Nipomo
59
57
58 
        Paso Robles
58
56
70 
        Red Hills
46
45
37 
        San Luis Obispo
49
47
56 
Santa Barbara County
        Carpinteria
Moderate
Unhealthy for Sensitive Groups
73 
        Gaviota Coast
Moderate
Moderate
59 
        Goleta
Moderate
Unhealthy for Sensitive Groups
72 
        Lompoc
Moderate
Moderate
59 
        Paradise Road
Good
Good
27 
        Santa Barbara
Moderate
Unhealthy for Sensitive Groups
83 
        Santa Maria
Moderate
Moderate
44 
        Santa Ynez
Moderate
Moderate
19 
Santa Rosa Rancheria
aqi not available
aqi not available
70 
Sequoia/Kings Canyon National Parks
34
aqi not available
31 
South Lake Tahoe
aqi not available
aqi not available
18 
Tahoe City area
aqi not available
aqi not available
23 
Truckee
aqi not available
aqi not available
50 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
29 
Ventura
aqi not available
aqi not available
33 
Ventura County Area
        Ojai
85
85
93 
        Oxnard
50
50
33 
        Piru
50
50
32 
        Simi Valley
45
45
35 
        Thousand Oaks
45
45
35 
Western Nevada County
40
40
39 
Willits
aqi not available
aqi not available
 
Willows
Good
aqi not available
54 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
31
aqi not available
45 
Yuba City/Marysville
Unhealthy for Sensitive Groups
aqi not available
70 
Yucca Vly
50
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.