California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170524_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
May 24
Thu
May 25
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
45 
Bishop Paiute Tribe
aqi not available
aqi not available
25 
Chester
aqi not available
aqi not available
 
Chico
Moderate
aqi not available
46 
Death Valley National Park
77 
aqi not available
48 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
52 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
aqi not available
53 
Imperial Valley
87 
98 
80 
Joshua Tree National Park
aqi not available
aqi not available
101 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
54 
aqi not available
54 
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
45 
Los Angeles Area
        Antelope Vly
67 
aqi not available
77 
        Anza Vly
67 
aqi not available
74 
        Banning
67 
aqi not available
87 
        Barstow
67 
aqi not available
67 
        Big Bear Lake
132 
aqi not available
 
        C San Bernardino M
161 
aqi not available
151 
        C San Bernardino-1
100 
aqi not available
59 
        C San Bernardino-2
132 
aqi not available
59 
        Capistrano Vly
53 
aqi not available
33 
        Central Coastal
55 
aqi not available
33 
        Central LA CO
68 
aqi not available
65 
        Central Orange-1
61 
aqi not available
45 
        Central Orange-2
59 
aqi not available
45 
        Coachella Vly
100 
aqi not available
136 
        E San Bernardino
161 
aqi not available
36 
        E San Fernando Vly
67 
aqi not available
65 
        E San Gabriel V-1
100 
aqi not available
49 
        E San Gabriel V-2
68 
aqi not available
49 
        East Riverside CO
50 
aqi not available
105 
        Hemet/San Jacinto
67 
aqi not available
74 
        Hesperia
67 
aqi not available
84 
        Lake Elsinore
100 
aqi not available
63 
        Metro Riverside CO
132 
aqi not available
61 
        N Coastal Orange
55 
aqi not available
31 
        NW Coastal LA
53 
aqi not available
37 
        NW San Bernardino
100 
aqi not available
59 
        Norco/Corona
67 
aqi not available
54 
        North Orange CO
57 
aqi not available
45 
        Perris Vly
132 
aqi not available
47 
        Phelan
100 
aqi not available
101 
        Pomona Walnut Vly
68 
aqi not available
14 
        S Central LA CO
46 
aqi not available
30 
        S San Gabriel Vly
46 
aqi not available
 
        SW Coastal LA
57 
aqi not available
37 
        SW San Bernardino
68 
aqi not available
59 
        Saddleback Vly
46 
aqi not available
45 
        San Gabriel Mts
67 
aqi not available
49 
        Santa Clarita Vly
132 
aqi not available
39 
        South Coastal LA
70 
aqi not available
28 
        Southeast LA CO
63 
aqi not available
45 
        Temecula Vly
59 
aqi not available
74 
        Trona
50 
aqi not available
100 
        Twentynine Palms
67 
aqi not available
67 
        Victorville
50 
aqi not available
64 
        W San Bernardino M
100 
aqi not available
151 
        W San Fernando Vly
67 
aqi not available
65 
        W San Gabriel Vly
100 
aqi not available
57 
Mammoth Lakes
aqi not available
aqi not available
18 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
aqi not available
27 
Mono Lake
aqi not available
aqi not available
15 
Monterey Bay Area
        Carmel Valley
Good
Good
24 
        Davenport
Good
Good
 
        Hollister
Moderate
Moderate
26 
        King City
Moderate
Moderate
27 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Unhealthy for Sensitive Groups
Moderate
26 
        Salinas
Good
Good
30 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
30 
        Scotts Valley
Moderate
Moderate
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
52 
Paradise
Moderate
aqi not available
84 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
29 
Red Bluff
aqi not available
aqi not available
 
Redding
50 
aqi not available
48 
Sacramento Area
        Arden Arcade-Del Paso Manor
97 
67 
43 
        Auburn
101 
67 
42 
        Colfax
101 
67 
43 
        Cool
101 
67 
43 
        Davis
58 
49 
22 
        Elk Grove
97 
67 
28 
        Folsom
97 
67 
33 
        Lincoln
101 
67 
42 
        Natomas
97 
67 
20 
        North Highlands
97 
67 
31 
        Placerville
101 
67 
93 
        Rio Vista
58 
49 
27 
        Roseville-Rocklin
101 
67 
37 
        Sacramento
97 
67 
43 
        Sloughhouse
97 
67 
28 
        Vacaville
58 
49 
34 
        Woodland
58 
49 
36 
San Diego Area
        San Diego Coast
Good
aqi not available
45 
        San Diego Foothills
Moderate
aqi not available
52 
        San Diego Mesa and Inland Valley
Moderate
aqi not available
36 
San Francisco Area
        Concord
37 
Good
46 
        Fairfield
37 
Good
27 
        Fremont
32 
Good
26 
        Livermore
37 
Good
43 
        Napa
34 
Good
24 
        Oakland
38 
Good
39 
        Redwood City
32 
Good
26 
        San Francisco
38 
Good
29 
        San Jose
36 
Good
30 
        San Rafael
34 
Good
26 
        Santa Rosa
34 
Good
23 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
147 
Moderate
54 
        Fresno
136 
Good
87 
        Hanford
126 
Good
84 
        Madera
122 
Good
51 
        Merced
84 
Good
54 
        Modesto
90 
Good
48 
        Stockton
58 
Good
31 
        Visalia
133 
Moderate
58 
San Luis Obispo County
        Atascadero
48 
44 
28 
        Carrizo Plains
65 
52 
32 
        Morro Bay
36 
35 
29 
        Nipomo
35 
35 
31 
        Paso Robles
48 
46 
29 
        Red Hills
61 
55 
71 
        San Luis Obispo
35 
35 
29 
Santa Barbara County
        Carpinteria
Good
aqi not available
16 
        Gaviota Coast
Good
aqi not available
29 
        Goleta
Good
aqi not available
29 
        Lompoc
Good
aqi not available
33 
        Paradise Road
Good
aqi not available
31 
        Santa Barbara
Good
aqi not available
32 
        Santa Maria
Good
aqi not available
30 
        Santa Ynez
Good
aqi not available
21 
Santa Rosa Rancheria
aqi not available
aqi not available
58 
Sequoia/Kings Canyon National Parks
90 
aqi not available
101 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
45 
Truckee
aqi not available
aqi not available
 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
93 
Ventura County Area
        Ojai
65 
50 
29 
        Oxnard
45 
45 
25 
        Piru
65 
50 
27 
        Simi Valley
65 
50 
41 
        Thousand Oaks
50 
50 
40 
Western Nevada County
aqi not available
aqi not available
154 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
61 
aqi not available
80 
Yuba City/Marysville
Moderate
aqi not available
24 
Yucca Vly
67 
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.