California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170118_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
Wed
Jan 18
Thu
Jan 19
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
61 
Bishop Paiute Tribe
aqi not available
aqi not available
61 
Chester
aqi not available
aqi not available
 
Chico
Moderate
Moderate
31 
Death Valley National Park
33 
35 
 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
49 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Moderate
Moderate
 
Imperial Valley
63 
53 
71 
Joshua Tree National Park
aqi not available
aqi not available
41 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
36 
35 
41 
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
31 
Los Angeles Area
        Antelope Vly
46 
46 
35 
        Anza Vly
59 
53 
39 
        Banning
46 
50 
68 
        Barstow
37 
37 
31 
        Big Bear Lake
37 
37 
 
        C San Bernardino M
38 
42 
31 
        C San Bernardino-1
68 
57 
61 
        C San Bernardino-2
66 
59 
61 
        Capistrano Vly
61 
55 
35 
        Central Coastal
55 
50 
39 
        Central LA CO
57 
42 
60 
        Central Orange-1
63 
55 
45 
        Central Orange-2
61 
55 
45 
        Coachella Vly
42 
46 
33 
        E San Bernardino
59 
50 
19 
        E San Fernando Vly
46 
46 
60 
        E San Gabriel V-1
61 
59 
24 
        E San Gabriel V-2
61 
57 
24 
        East Riverside CO
50 
50 
44 
        Hemet/San Jacinto
55 
53 
39 
        Hesperia
50 
50 
42 
        Lake Elsinore
72 
66 
53 
        Metro Riverside CO
76 
66 
58 
        N Coastal Orange
55 
46 
39 
        NW Coastal LA
55 
42 
38 
        NW San Bernardino
68 
59 
61 
        Norco/Corona
70 
66 
56 
        North Orange CO
68 
59 
45 
        Perris Vly
66 
55 
23 
        Phelan
50 
50 
30 
        Pomona Walnut Vly
68 
57 
21 
        S Central LA CO
46 
38 
31 
        S San Gabriel Vly
50 
42 
 
        SW Coastal LA
61 
53 
38 
        SW San Bernardino
66 
66 
61 
        Saddleback Vly
55 
46 
45 
        San Gabriel Mts
59 
55 
35 
        Santa Clarita Vly
46 
42 
35 
        South Coastal LA
61 
50 
28 
        Southeast LA CO
63 
55 
45 
        Temecula Vly
66 
57 
39 
        Trona
46 
46 
28 
        Twentynine Palms
33 
33 
31 
        Victorville
50 
50 
25 
        W San Bernardino M
61 
50 
61 
        W San Fernando Vly
50 
42 
60 
        W San Gabriel Vly
57 
50 
30 
Mammoth Lakes
aqi not available
aqi not available
10 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
24 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
31 
        Davenport
Good
Good
 
        Hollister
Good
Good
34 
        King City
Good
Good
31 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
35 
33 
        Salinas
Good
Good
54 
        San Lorenzo Valley
Moderate
Good
 
        Santa Cruz
Good
Good
29 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
Moderate
Moderate
 
Owens Lake
aqi not available
aqi not available
49 
Paradise
Good
Good
43 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
95 
Quincy
aqi not available
aqi not available
20 
Red Bluff
aqi not available
aqi not available
 
Redding
50 
50 
47 
Sacramento Area
        Arden Arcade-Del Paso Manor
91 
42 
46 
        Auburn
61 
25 
37 
        Colfax
61 
25 
36 
        Cool
aqi not available
aqi not available
 
        Davis
76 
42 
158 
        Elk Grove
91 
42 
40 
        Folsom
91 
42 
41 
        Lincoln
61 
25 
33 
        Natomas
91 
42 
43 
        North Highlands
91 
42 
39 
        Placerville
aqi not available
aqi not available
45 
        Rio Vista
76 
42 
 
        Roseville-Rocklin
61 
25 
46 
        Sacramento
91 
42 
46 
        Sloughhouse
91 
42 
40 
        Vacaville
76 
42 
58 
        Woodland
76 
42 
 
San Diego Area
        San Diego Coast
Good
Good
43 
        San Diego Foothills
Good
Good
41 
        San Diego Mesa and Inland Valley
Moderate
Moderate
45 
San Francisco Area
        Concord
61 
38 
32 
        Fairfield
61 
38 
38 
        Fremont
50 
42 
31 
        Livermore
61 
38 
33 
        Napa
57 
42 
27 
        Oakland
61 
46 
29 
        Redwood City
50 
42 
28 
        San Francisco
61 
46 
29 
        San Jose
55 
33 
34 
        San Rafael
57 
42 
27 
        Santa Rosa
57 
42 
26 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
78 
42 
62 
        Fresno
89 
46 
38 
        Hanford
72 
33 
54 
        Madera
78 
50 
38 
        Merced
74 
38 
42 
        Modesto
80 
42 
37 
        Stockton
74 
50 
32 
        Visalia
74 
33 
44 
San Luis Obispo County
        Atascadero
45 
29 
29 
        Carrizo Plains
30 
30 
34 
        Morro Bay
23 
30 
31 
        Nipomo
49 
34 
31 
        Paso Robles
45 
29 
31 
        Red Hills
35 
34 
35 
        San Luis Obispo
28 
28 
30 
Santa Barbara County
        Carpinteria
Good
Good
29 
        Gaviota Coast
Good
Good
32 
        Goleta
Good
Good
50 
        Lompoc
Good
Good
34 
        Paradise Road
Good
Good
33 
        Santa Barbara
Good
Good
23 
        Santa Maria
Good
Good
31 
        Santa Ynez
Good
Good
31 
Santa Rosa Rancheria
aqi not available
aqi not available
26 
Sequoia/Kings Canyon National Parks
37 
38 
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
 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
 
Ventura County Area
        Ojai
40 
40 
55 
        Oxnard
35 
35 
31 
        Piru
40 
40 
32 
        Simi Valley
40 
40 
33 
        Thousand Oaks
40 
40 
32 
Western Nevada County
38 
aqi not available
44 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
39 
37 
59 
Yuba City/Marysville
Good
Good
34 
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.