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_20180523_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
Siskiyou County Air Pollution Control 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
May 23
Thu
May 24
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
27 
Bishop Paiute Tribe
aqi not available
aqi not available
17 
Chester
aqi not available
aqi not available
51 
Chico
Good
Good
38 
Death Valley National Park
46
aqi not available
49 
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
30 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
29 
Imperial Valley
77
90
52 
Joshua Tree National Park
aqi not available
aqi not available
61 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
42
aqi not available
19 
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
30 
Los Angeles Area
        Antelope Vly
46
aqi not available
38 
        Anza Vly
46
aqi not available
54 
        Banning
67
aqi not available
70 
        Barstow
46
aqi not available
35 
        Big Bear Lake
46
aqi not available
 
        C San Bernardino M
67
aqi not available
54 
        C San Bernardino-1
50
aqi not available
67 
        C San Bernardino-2
46
aqi not available
67 
        Capistrano Vly
37
aqi not available
23 
        Central Coastal
37
aqi not available
23 
        Central LA CO
29
aqi not available
60 
        Central Orange-1
28
aqi not available
27 
        Central Orange-2
28
aqi not available
27 
        Coachella Vly
68
aqi not available
35 
        E San Bernardino
55
aqi not available
17 
        E San Fernando Vly
28
aqi not available
60 
        E San Gabriel V-1
42
aqi not available
12 
        E San Gabriel V-2
46
aqi not available
12 
        East Riverside CO
46
aqi not available
 
        Hemet/San Jacinto
46
aqi not available
37 
        Hesperia
46
aqi not available
31 
        Lake Elsinore
67
aqi not available
54 
        Metro Riverside CO
67
aqi not available
60 
        N Coastal Orange
28
aqi not available
24 
        NW Coastal LA
37
aqi not available
32 
        NW San Bernardino
42
aqi not available
67 
        Norco/Corona
46
aqi not available
58 
        North Orange CO
37
aqi not available
27 
        Perris Vly
46
aqi not available
37 
        Phelan
46
aqi not available
44 
        Pomona Walnut Vly
29
aqi not available
12 
        S Central LA CO
21
aqi not available
25 
        S San Gabriel Vly
28
aqi not available
 
        SW Coastal LA
28
aqi not available
32 
        SW San Bernardino
37
aqi not available
67 
        Saddleback Vly
37
aqi not available
27 
        San Gabriel Mts
37
aqi not available
50 
        Santa Clarita Vly
46
aqi not available
50 
        South Coastal LA
28
aqi not available
24 
        Southeast LA CO
38
aqi not available
27 
        Temecula Vly
37
aqi not available
54 
        Trona
37
aqi not available
38 
        Twentynine Palms
46
aqi not available
35 
        Victorville
46
aqi not available
24 
        W San Bernardino M
46
aqi not available
67 
        W San Fernando Vly
37
aqi not available
60 
        W San Gabriel Vly
37
aqi not available
45 
Mammoth Lakes
aqi not available
aqi not available
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
aqi not available
20 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
aqi not available
18 
        Davenport
Good
aqi not available
 
        Hollister
Good
aqi not available
26 
        King City
Good
aqi not available
27 
        Marina/Seaside
Good
aqi not available
 
        Monterey Peninsula
Good
aqi not available
 
        Pinnacles National Monument
33
aqi not available
25 
        Salinas
Good
aqi not available
27 
        San Lorenzo Valley
Good
aqi not available
 
        Santa Cruz
Good
aqi not available
15 
        Scotts Valley
Good
aqi not available
 
        Watsonville
Good
aqi not available
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
30 
Paradise
Good
Good
25 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
 
Red Bluff
aqi not available
aqi not available
33 
Redding
aqi not available
aqi not available
24 
Sacramento Area
        Arden Arcade-Del Paso Manor
39
38
28 
        Auburn
42
42
23 
        Colfax
42
42
        Cool
43
42
21 
        Davis
37
39
24 
        Elk Grove
39
38
29 
        Folsom
39
38
27 
        Lincoln
42
42
 
        Natomas
39
38
 
        North Highlands
39
38
27 
        Placerville
43
42
21 
        Rio Vista
37
39
        Roseville-Rocklin
42
42
25 
        Sacramento
39
38
28 
        Sloughhouse
39
38
28 
        Vacaville
37
39
28 
        Woodland
37
39
30 
San Diego Area
        San Diego Coast
Good
aqi not available
26 
        San Diego Foothills
Good
aqi not available
36 
        San Diego Mesa and Inland Valley
Good
aqi not available
53 
San Francisco Area
        Concord
42
50
26 
        Fairfield
42
50
32 
        Fremont
29
32
30 
        Livermore
42
50
29 
        Napa
42
46
 
        Oakland
46
46
28 
        Redwood City
29
32
 
        San Francisco
46
46
25 
        San Jose
31
34
25 
        San Rafael
42
46
25 
        Santa Rosa
42
46
25 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
71
Moderate
28 
        Fresno
87
Moderate
25 
        Hanford
74
Moderate
20 
        Madera
67
Moderate
20 
        Merced
50
Good
26 
        Modesto
64
Moderate
25 
        Stockton
44
Good
26 
        Visalia
80
Moderate
33 
San Luis Obispo County
        Atascadero
32
31
26 
        Carrizo Plains
34
36
19 
        Morro Bay
31
31
31 
        Nipomo
31
31
29 
        Paso Robles
33
33
31 
        Red Hills
35
35
24 
        San Luis Obispo
31
31
29 
Santa Barbara County
        Carpinteria
Good
Good
22 
        Gaviota Coast
Good
Good
28 
        Goleta
Good
Good
22 
        Lompoc
Good
Good
31 
        Paradise Road
Good
Good
12 
        Santa Barbara
Good
Good
25 
        Santa Maria
Good
Good
25 
        Santa Ynez
Good
Good
26 
Santa Rosa Rancheria
aqi not available
aqi not available
23 
Sequoia/Kings Canyon National Parks
45
aqi not available
54 
South Lake Tahoe
aqi not available
aqi not available
Tahoe City area
aqi not available
aqi not available
28 
Truckee
aqi not available
aqi not available
26 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
14 
Ventura County Area
        Ojai
45
50
46 
        Oxnard
35
40
23 
        Piru
45
45
40 
        Simi Valley
45
45
30 
        Thousand Oaks
40
45
48 
Western Nevada County
46
aqi not available
30 
Willits
aqi not available
aqi not available
 
Willows
Good
aqi not available
21 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
40
aqi not available
26 
Yreka
aqi not available
aqi not available
27 
Yuba City/Marysville
41
aqi not available
32 
Yucca Vly
46
aqi not available
 
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.