California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20161209_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
Fri
Dec 9
Sat
Dec 10
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
19 
Bishop Paiute Tribe
aqi not available
aqi not available
19 
Chester
aqi not available
aqi not available
51 
Chico
Good
Good
59 
Death Valley National Park
34 
31 
30 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
19 
Greeley Hill
aqi not available
aqi not available
46 
Gridley
Good
Good
 
Imperial Valley
56 
68 
39 
Joshua Tree National Park
aqi not available
aqi not available
39 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
35 
35 
32 
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
38 
Los Angeles Area
        Antelope Vly
50 
46 
30 
        Anza Vly
57 
57 
85 
        Banning
57 
57 
91 
        Barstow
37 
37 
30 
        Big Bear Lake
29 
37 
 
        C San Bernardino M
38 
42 
31 
        C San Bernardino-1
78 
102 
111 
        C San Bernardino-2
68 
74 
111 
        Capistrano Vly
57 
57 
27 
        Central Coastal
55 
55 
27 
        Central LA CO
53 
59 
77 
        Central Orange-1
55 
63 
65 
        Central Orange-2
57 
61 
65 
        Coachella Vly
42 
46 
20 
        E San Bernardino
66 
72 
31 
        E San Fernando Vly
59 
57 
73 
        E San Gabriel V-1
59 
66 
87 
        E San Gabriel V-2
57 
68 
87 
        East Riverside CO
50 
50 
39 
        Hemet/San Jacinto
42 
57 
85 
        Hesperia
50 
50 
31 
        Lake Elsinore
66 
70 
91 
        Metro Riverside CO
93 
107 
99 
        N Coastal Orange
55 
57 
74 
        NW Coastal LA
53 
61 
74 
        NW San Bernardino
66 
76 
111 
        Norco/Corona
89 
107 
80 
        North Orange CO
61 
63 
65 
        Perris Vly
91 
97 
36 
        Phelan
50 
50 
24 
        Pomona Walnut Vly
63 
76 
25 
        S Central LA CO
46 
53 
11 
        S San Gabriel Vly
46 
53 
 
        SW Coastal LA
59 
66 
74 
        SW San Bernardino
66 
70 
111 
        Saddleback Vly
53 
53 
65 
        San Gabriel Mts
55 
61 
87 
        Santa Clarita Vly
33 
50 
36 
        South Coastal LA
55 
68 
74 
        Southeast LA CO
59 
66 
65 
        Temecula Vly
59 
61 
85 
        Trona
50 
50 
36 
        Twentynine Palms
37 
33 
30 
        Victorville
50 
50 
 
        W San Bernardino M
50 
68 
111 
        W San Fernando Vly
50 
55 
73 
        W San Gabriel Vly
53 
61 
77 
Mammoth Lakes
aqi not available
aqi not available
16 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
17 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
 
        Davenport
Good
Good
 
        Hollister
Good
Good
 
        King City
Good
Good
 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Good
Good
25 
        Salinas
Good
Good
25 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
38 
Paradise
Good
Good
22 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
25 
Quincy
aqi not available
aqi not available
21 
Red Bluff
aqi not available
aqi not available
 
Redding
70 
aqi not available
42 
Sacramento Area
        Arden Arcade-Del Paso Manor
57 
55 
38 
        Auburn
33 
46 
22 
        Colfax
33 
46 
21 
        Cool
aqi not available
aqi not available
 
        Davis
55 
53 
56 
        Elk Grove
57 
55 
66 
        Folsom
57 
55 
        Lincoln
33 
46 
28 
        Natomas
57 
55 
10 
        North Highlands
57 
55 
13 
        Placerville
aqi not available
aqi not available
25 
        Rio Vista
55 
53 
45 
        Roseville-Rocklin
33 
46 
25 
        Sacramento
57 
55 
57 
        Sloughhouse
57 
55 
25 
        Vacaville
55 
53 
49 
        Woodland
55 
53 
54 
San Diego Area
        San Diego Coast
Moderate
Moderate
66 
        San Diego Foothills
Good
Good
52 
        San Diego Mesa and Inland Valley
Moderate
Moderate
56 
San Francisco Area
        Concord
42 
50 
44 
        Fairfield
42 
50 
13 
        Fremont
38 
33 
23 
        Livermore
42 
50 
24 
        Napa
55 
53 
32 
        Oakland
53 
46 
28 
        Redwood City
38 
33 
21 
        San Francisco
53 
46 
29 
        San Jose
42 
42 
23 
        San Rafael
55 
53 
25 
        Santa Rosa
55 
53 
24 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
89 
66 
31 
        Fresno
64 
64 
25 
        Hanford
80 
64 
51 
        Madera
57 
57 
29 
        Merced
55 
53 
51 
        Modesto
57 
62 
55 
        Stockton
53 
64 
20 
        Visalia
70 
59 
45 
San Luis Obispo County
        Atascadero
26 
26 
24 
        Carrizo Plains
30 
30 
27 
        Morro Bay
24 
24 
22 
        Nipomo
28 
27 
26 
        Paso Robles
27 
27 
26 
        Red Hills
29 
29 
27 
        San Luis Obispo
25 
25 
24 
Santa Barbara County
        Carpinteria
Good
Good
16 
        Gaviota Coast
Good
Good
26 
        Goleta
Good
Good
22 
        Lompoc
Good
Good
25 
        Paradise Road
Good
Good
18 
        Santa Barbara
Good
Good
19 
        Santa Maria
Good
Good
23 
        Santa Ynez
Good
Good
24 
Santa Rosa Rancheria
aqi not available
aqi not available
24 
Sequoia/Kings Canyon National Parks
36 
37 
24 
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
51 
Tuolumne City
aqi not available
aqi not available
18 
Tuolumne County
aqi not available
aqi not available
 
Ventura County Area
        Ojai
35 
40 
25 
        Oxnard
35 
40 
25 
        Piru
35 
40 
31 
        Simi Valley
35 
40 
28 
        Thousand Oaks
35 
40 
28 
Western Nevada County
33 
33 
29 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
37 
37 
49 
Yuba City/Marysville
Moderate
Moderate
45 
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.