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_20171020_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
Fri
Oct 20
Sat
Oct 21
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
51 
Bishop Paiute Tribe
aqi not available
aqi not available
24 
Chester
aqi not available
aqi not available
30 
Chico
Good
Good
34 
Death Valley National Park
40
38
39 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
Moderate
Moderate
28 
Great Basin Air District
aqi not available
aqi not available
69 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
58 
Imperial Valley
150
42
627 
Joshua Tree National Park
aqi not available
aqi not available
37 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
37
36
33 
Laytonville
Moderate
Moderate
 
Leggett
Moderate
Moderate
 
Lone Pine Paiute-Shoshone Reservation
aqi not available
aqi not available
16 
Los Angeles Area
        Antelope Vly
55
46
59 
        Anza Vly
68
68
34 
        Banning
57
50
53 
        Barstow
46
46
38 
        Big Bear Lake
67
67
 
        C San Bernardino M
100
132
51 
        C San Bernardino-1
78
74
55 
        C San Bernardino-2
76
100
55 
        Capistrano Vly
70
63
32 
        Central Coastal
57
55
32 
        Central LA CO
74
63
60 
        Central Orange-1
68
66
31 
        Central Orange-2
68
66
31 
        Coachella Vly
67
100
392 
        E San Bernardino
100
100
43 
        E San Fernando Vly
68
55
60 
        E San Gabriel V-1
78
68
35 
        E San Gabriel V-2
78
66
35 
        East Riverside CO
50
50
 
        Hemet/San Jacinto
68
61
34 
        Hesperia
50
50
37 
        Lake Elsinore
74
76
31 
        Metro Riverside CO
82
76
39 
        N Coastal Orange
57
55
28 
        NW Coastal LA
68
59
38 
        NW San Bernardino
80
76
55 
        Norco/Corona
78
72
39 
        North Orange CO
74
61
31 
        Perris Vly
78
74
34 
        Phelan
67
50
39 
        Pomona Walnut Vly
76
72
34 
        S Central LA CO
57
50
32 
        S San Gabriel Vly
57
53
 
        SW Coastal LA
68
59
38 
        SW San Bernardino
74
70
55 
        Saddleback Vly
61
59
32 
        San Gabriel Mts
74
63
41 
        Santa Clarita Vly
67
55
41 
        South Coastal LA
68
59
30 
        Southeast LA CO
74
68
31 
        Temecula Vly
76
74
34 
        Trona
50
50
48 
        Twentynine Palms
46
67
38 
        Victorville
50
50
35 
        W San Bernardino M
67
55
55 
        W San Fernando Vly
66
55
60 
        W San Gabriel Vly
76
63
44 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Moderate
Moderate
34 
Mono Lake
aqi not available
aqi not available
15 
Monterey Bay Area
        Carmel Valley
Good
Moderate
35 
        Davenport
Good
Good
 
        Hollister
Moderate
Moderate
37 
        King City
Moderate
Moderate
37 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
44
Good
38 
        Salinas
Good
Good
54 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
54 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
69 
Paradise
Good
Good
40 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
20 
Quincy
aqi not available
aqi not available
15 
Red Bluff
Good
aqi not available
36 
Redding
77
55
41 
Sacramento Area
        Arden Arcade-Del Paso Manor
42
50
36 
        Auburn
37
43
34 
        Colfax
37
43
36 
        Cool
50
42
33 
        Davis
55
55
32 
        Elk Grove
42
50
34 
        Folsom
42
50
34 
        Lincoln
37
43
 
        Natomas
42
50
 
        North Highlands
42
50
36 
        Placerville
50
42
33 
        Rio Vista
55
55
21 
        Roseville-Rocklin
37
43
29 
        Sacramento
42
50
35 
        Sloughhouse
42
50
36 
        Vacaville
55
55
31 
        Woodland
55
55
56 
San Diego Area
        San Diego Coast
Moderate
Moderate
34 
        San Diego Foothills
Good
Moderate
29 
        San Diego Mesa and Inland Valley
Moderate
Moderate
30 
San Francisco Area
        Concord
37
42
34 
        Fairfield
37
42
34 
        Fremont
25
37
33 
        Livermore
37
42
36 
        Napa
68
53
37 
        Oakland
33
46
39 
        Redwood City
25
37
33 
        San Francisco
33
46
24 
        San Jose
55
42
37 
        San Rafael
68
53
41 
        Santa Rosa
68
53
31 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
88
67
45 
        Fresno
83
64
41 
        Hanford
88
58
43 
        Madera
56
49
39 
        Merced
38
46
33 
        Modesto
39
50
37 
        Stockton
37
48
 
        Visalia
68
61
 
San Luis Obispo County
        Atascadero
31
39
39 
        Carrizo Plains
36
39
43 
        Morro Bay
31
33
38 
        Nipomo
76
49
141 
        Paso Robles
32
36
39 
        Red Hills
35
37
 
        San Luis Obispo
30
32
 
Santa Barbara County
        Carpinteria
Good
Good
31 
        Gaviota Coast
Good
Good
38 
        Goleta
Good
Good
35 
        Lompoc
Good
Good
53 
        Paradise Road
Good
Good
38 
        Santa Barbara
Good
Good
38 
        Santa Maria
Good
Good
97 
        Santa Ynez
Good
Good
38 
Santa Rosa Rancheria
aqi not available
aqi not available
50 
Sequoia/Kings Canyon National Parks
42
41
31 
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
45 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
 
Ventura County Area
        Ojai
50
55
40 
        Oxnard
50
55
54 
        Piru
50
60
39 
        Simi Valley
50
60
38 
        Thousand Oaks
50
60
37 
Western Nevada County
45
45
40 
Willits
Moderate
Moderate
 
Willows
Good
Good
 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
42
39
 
Yuba City/Marysville
Moderate
Moderate
 
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.