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_20171018_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
Oct 18
Thu
Oct 19
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
40 
Bishop Paiute Tribe
aqi not available
aqi not available
40 
Chester
aqi not available
aqi not available
64 
Chico
Moderate
Good
72 
Death Valley National Park
35
39
 
Forest Ranch
aqi not available
aqi not available
 
Fort Bragg
Unhealthy for Sensitive Groups
Moderate
12 
Great Basin Air District
aqi not available
aqi not available
56 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Moderate
Moderate
64 
Imperial Valley
89
68
79 
Joshua Tree National Park
aqi not available
aqi not available
43 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
42
44
45 
Laytonville
Unhealthy for Sensitive Groups
Moderate
 
Leggett
Unhealthy for Sensitive Groups
Moderate
 
Lone Pine Paiute-Shoshone Reservation
aqi not available
aqi not available
41 
Los Angeles Area
        Antelope Vly
59
50
58 
        Anza Vly
63
63
126 
        Banning
67
67
54 
        Barstow
46
46
48 
        Big Bear Lake
46
67
 
        C San Bernardino M
100
100
44 
        C San Bernardino-1
70
70
108 
        C San Bernardino-2
72
74
108 
        Capistrano Vly
53
66
71 
        Central Coastal
55
55
71 
        Central LA CO
57
59
154 
        Central Orange-1
63
68
80 
        Central Orange-2
63
61
80 
        Coachella Vly
67
50
77 
        E San Bernardino
67
67
54 
        E San Fernando Vly
57
53
154 
        E San Gabriel V-1
50
76
150 
        E San Gabriel V-2
50
70
150 
        East Riverside CO
50
50
44 
        Hemet/San Jacinto
55
61
126 
        Hesperia
50
50
35 
        Lake Elsinore
72
72
90 
        Metro Riverside CO
93
83
147 
        N Coastal Orange
55
61
76 
        NW Coastal LA
55
55
90 
        NW San Bernardino
72
67
100 
        Norco/Corona
61
74
147 
        North Orange CO
59
72
108 
        Perris Vly
70
76
126 
        Phelan
50
50
49 
        Pomona Walnut Vly
46
72
143 
        S Central LA CO
46
46
77 
        S San Gabriel Vly
50
50
 
        SW Coastal LA
57
57
90 
        SW San Bernardino
70
72
143 
        Saddleback Vly
57
57
80 
        San Gabriel Mts
70
72
133 
        Santa Clarita Vly
67
67
133 
        South Coastal LA
59
68
76 
        Southeast LA CO
63
63
80 
        Temecula Vly
70
70
126 
        Trona
42
46
35 
        Twentynine Palms
46
46
48 
        Victorville
50
50
49 
        W San Bernardino M
57
67
100 
        W San Fernando Vly
53
53
154 
        W San Gabriel Vly
63
67
126 
Mammoth Lakes
aqi not available
aqi not available
13 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Unhealthy for Sensitive Groups
Moderate
71 
Mono Lake
aqi not available
aqi not available
21 
Monterey Bay Area
        Carmel Valley
Moderate
aqi not available
58 
        Davenport
Moderate
aqi not available
 
        Hollister
Moderate
aqi not available
87 
        King City
Moderate
aqi not available
69 
        Marina/Seaside
Moderate
aqi not available
 
        Monterey Peninsula
Moderate
aqi not available
 
        Pinnacles National Monument
Good
aqi not available
90 
        Salinas
Moderate
aqi not available
131 
        San Lorenzo Valley
Moderate
aqi not available
 
        Santa Cruz
Good
Good
131 
        Scotts Valley
Moderate
aqi not available
 
        Watsonville
Moderate
aqi not available
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
56 
Paradise
Moderate
Good
50 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
20 
Quincy
aqi not available
aqi not available
55 
Red Bluff
aqi not available
aqi not available
60 
Redding
82
aqi not available
103 
Sacramento Area
        Arden Arcade-Del Paso Manor
89
68
75 
        Auburn
68
57
62 
        Colfax
68
57
49 
        Cool
68
57
47 
        Davis
97
78
77 
        Elk Grove
89
68
71 
        Folsom
89
68
61 
        Lincoln
68
57
 
        Natomas
89
68
 
        North Highlands
89
68
67 
        Placerville
68
57
61 
        Rio Vista
97
78
80 
        Roseville-Rocklin
68
57
64 
        Sacramento
89
68
74 
        Sloughhouse
89
68
67 
        Vacaville
97
78
62 
        Woodland
97
78
70 
San Diego Area
        San Diego Coast
Moderate
Moderate
69 
        San Diego Foothills
Moderate
Moderate
50 
        San Diego Mesa and Inland Valley
Moderate
Moderate
66 
San Francisco Area
        Concord
72
42
71 
        Fairfield
72
42
71 
        Fremont
59
38
109 
        Livermore
72
42
100 
        Napa
134
134
110 
        Oakland
68
59
83 
        Redwood City
59
38
109 
        San Francisco
68
59
47 
        San Jose
89
72
99 
        San Rafael
134
134
57 
        Santa Rosa
134
134
46 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
108
Unhealthy for Sensitive Groups
129 
        Fresno
90
Moderate
185 
        Hanford
97
Moderate
119 
        Madera
71
Moderate
119 
        Merced
67
Moderate
74 
        Modesto
99
Moderate
84 
        Stockton
74
Moderate
82 
        Visalia
83
Moderate
106 
San Luis Obispo County
        Atascadero
93
45
97 
        Carrizo Plains
87
63
64 
        Morro Bay
47
45
38 
        Nipomo
68
75
78 
        Paso Robles
80
50
108 
        Red Hills
97
93
 
        San Luis Obispo
50
46
36 
Santa Barbara County
        Carpinteria
Good
Good
40 
        Gaviota Coast
Moderate
Moderate
58 
        Goleta
Moderate
Moderate
64 
        Lompoc
Moderate
Moderate
56 
        Paradise Road
Moderate
Moderate
58 
        Santa Barbara
Moderate
Moderate
58 
        Santa Maria
Good
Moderate
57 
        Santa Ynez
Moderate
Good
42 
Santa Rosa Rancheria
aqi not available
aqi not available
86 
Sequoia/Kings Canyon National Parks
77
67
86 
South Lake Tahoe
aqi not available
aqi not available
10 
Tahoe City area
aqi not available
aqi not available
52 
Truckee
aqi not available
aqi not available
59 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
74 
Ventura County Area
        Ojai
70
55
100 
        Oxnard
65
55
66 
        Piru
65
55
100 
        Simi Valley
65
55
93 
        Thousand Oaks
65
50
71 
Western Nevada County
60
50
126 
Willits
Unhealthy for Sensitive Groups
Moderate
 
Willows
Good
Good
70 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
39
42
174 
Yuba City/Marysville
Moderate
aqi not available
58 
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.