California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170817_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
Thu
Aug 17
Fri
Aug 18
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
44 
Bishop Paiute Tribe
aqi not available
aqi not available
31 
Chester
aqi not available
aqi not available
52 
Chico
Moderate
Moderate
64 
Death Valley National Park
46 
44 
44 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
44 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Moderate
Moderate
65 
Imperial Valley
aqi not available
aqi not available
44 
Joshua Tree National Park
aqi not available
aqi not available
51 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
44 
51 
42 
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
33 
Los Angeles Area
        Antelope Vly
67 
67 
84 
        Anza Vly
46 
67 
67 
        Banning
100 
100 
143 
        Barstow
46 
46 
42 
        Big Bear Lake
100 
100 
 
        C San Bernardino M
132 
132 
172 
        C San Bernardino-1
100 
100 
156 
        C San Bernardino-2
100 
132 
156 
        Capistrano Vly
42 
50 
43 
        Central Coastal
42 
46 
43 
        Central LA CO
46 
53 
64 
        Central Orange-1
37 
50 
47 
        Central Orange-2
46 
50 
47 
        Coachella Vly
100 
100 
47 
        E San Bernardino
100 
100 
169 
        E San Fernando Vly
50 
57 
64 
        E San Gabriel V-1
67 
67 
112 
        E San Gabriel V-2
67 
61 
112 
        East Riverside CO
50 
50 
 
        Hemet/San Jacinto
67 
67 
143 
        Hesperia
67 
67 
105 
        Lake Elsinore
100 
100 
67 
        Metro Riverside CO
132 
80 
97 
        N Coastal Orange
38 
42 
58 
        NW Coastal LA
46 
46 
58 
        NW San Bernardino
100 
100 
108 
        Norco/Corona
67 
67 
97 
        North Orange CO
46 
50 
48 
        Perris Vly
100 
100 
143 
        Phelan
67 
67 
119 
        Pomona Walnut Vly
55 
61 
93 
        S Central LA CO
46 
33 
40 
        S San Gabriel Vly
46 
46 
 
        SW Coastal LA
38 
38 
58 
        SW San Bernardino
67 
67 
108 
        Saddleback Vly
42 
46 
47 
        San Gabriel Mts
99 
67 
112 
        Santa Clarita Vly
100 
132 
105 
        South Coastal LA
38 
53 
58 
        Southeast LA CO
50 
57 
47 
        Temecula Vly
50 
57 
67 
        Trona
50 
50 
37 
        Twentynine Palms
67 
67 
42 
        Victorville
50 
50 
47 
        W San Bernardino M
100 
100 
172 
        W San Fernando Vly
46 
67 
64 
        W San Gabriel Vly
67 
67 
64 
Mammoth Lakes
aqi not available
aqi not available
15 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
57 
Mono Lake
aqi not available
aqi not available
13 
Monterey Bay Area
        Carmel Valley
Good
Good
41 
        Davenport
Good
Good
 
        Hollister
Good
Good
45 
        King City
Good
Good
61 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
49 
45 
44 
        Salinas
Good
Good
61 
        San Lorenzo Valley
Good
Good
 
        Santa Cruz
Good
Good
25 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
33 
Paradise
Moderate
Moderate
74 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
14 
Quincy
aqi not available
aqi not available
23 
Red Bluff
aqi not available
aqi not available
 
Redding
88 
99 
95 
Sacramento Area
        Arden Arcade-Del Paso Manor
100 
108 
74 
        Auburn
100 
112 
115 
        Colfax
100 
112 
90 
        Cool
100 
108 
126 
        Davis
51 
67 
51 
        Elk Grove
100 
108 
55 
        Folsom
100 
108 
122 
        Lincoln
100 
112 
101 
        Natomas
100 
108 
 
        North Highlands
100 
108 
133 
        Placerville
100 
108 
126 
        Rio Vista
51 
67 
50 
        Roseville-Rocklin
100 
112 
147 
        Sacramento
100 
108 
54 
        Sloughhouse
100 
108 
58 
        Vacaville
51 
67 
50 
        Woodland
51 
67 
87 
San Diego Area
        San Diego Coast
Good
Moderate
41 
        San Diego Foothills
Moderate
Moderate
74 
        San Diego Mesa and Inland Valley
Moderate
Moderate
42 
San Francisco Area
        Concord
55 
61 
56 
        Fairfield
55 
61 
36 
        Fremont
42 
55 
46 
        Livermore
55 
61 
45 
        Napa
55 
57 
56 
        Oakland
57 
61 
56 
        Redwood City
42 
55 
46 
        San Francisco
57 
61 
36 
        San Jose
50 
58 
52 
        San Rafael
55 
57 
45 
        Santa Rosa
55 
57 
44 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
80 
93 
136 
        Fresno
93 
93 
105 
        Hanford
84 
77 
56 
        Madera
77 
87 
84 
        Merced
70 
74 
62 
        Modesto
61 
67 
87 
        Stockton
57 
54 
51 
        Visalia
97 
87 
112 
San Luis Obispo County
        Atascadero
40 
43 
42 
        Carrizo Plains
49 
50 
54 
        Morro Bay
27 
30 
23 
        Nipomo
50 
49 
51 
        Paso Robles
42 
43 
46 
        Red Hills
44 
49 
50 
        San Luis Obispo
41 
42 
35 
Santa Barbara County
        Carpinteria
Good
Good
27 
        Gaviota Coast
Good
Good
35 
        Goleta
Good
Good
31 
        Lompoc
Good
Good
33 
        Paradise Road
Good
Good
39 
        Santa Barbara
Good
Good
35 
        Santa Maria
Good
Good
43 
        Santa Ynez
Good
Good
32 
Santa Rosa Rancheria
aqi not available
aqi not available
84 
Sequoia/Kings Canyon National Parks
80 
74 
129 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
17 
Truckee
aqi not available
aqi not available
52 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
77 
Ventura County Area
        Ojai
45 
50 
45 
        Oxnard
35 
40 
41 
        Piru
50 
60 
47 
        Simi Valley
50 
60 
57 
        Thousand Oaks
40 
45 
42 
Western Nevada County
aqi not available
aqi not available
22 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
44 
44 
81 
Yuba City/Marysville
Moderate
Moderate
64 
Yucca Vly
50 
67 
 
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.