California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170522_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
Mon
May 22
Tue
May 23
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
46 
Bishop Paiute Tribe
aqi not available
aqi not available
32 
Chester
aqi not available
aqi not available
 
Chico
Moderate
Moderate
48 
Death Valley National Park
46 
40 
44 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
46 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Good
Good
27 
Imperial Valley
101 
101 
108 
Joshua Tree National Park
aqi not available
aqi not available
97 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
38 
46 
51 
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
20 
Los Angeles Area
        Antelope Vly
46 
67 
74 
        Anza Vly
46 
46 
115 
        Banning
132 
100 
154 
        Barstow
46 
46 
58 
        Big Bear Lake
100 
100 
 
        C San Bernardino M
132 
132 
174 
        C San Bernardino-1
100 
68 
159 
        C San Bernardino-2
132 
132 
159 
        Capistrano Vly
46 
38 
80 
        Central Coastal
46 
38 
80 
        Central LA CO
46 
61 
159 
        Central Orange-1
100 
46 
65 
        Central Orange-2
100 
46 
65 
        Coachella Vly
132 
100 
119 
        E San Bernardino
132 
132 
166 
        E San Fernando Vly
50 
57 
159 
        E San Gabriel V-1
67 
67 
151 
        E San Gabriel V-2
67 
67 
151 
        East Riverside CO
50 
50 
93 
        Hemet/San Jacinto
67 
50 
129 
        Hesperia
50 
67 
105 
        Lake Elsinore
100 
67 
151 
        Metro Riverside CO
132 
100 
161 
        N Coastal Orange
100 
46 
72 
        NW Coastal LA
46 
46 
72 
        NW San Bernardino
100 
100 
143 
        Norco/Corona
132 
67 
161 
        North Orange CO
100 
46 
65 
        Perris Vly
100 
67 
129 
        Phelan
50 
67 
87 
        Pomona Walnut Vly
67 
67 
87 
        S Central LA CO
100 
46 
44 
        S San Gabriel Vly
46 
42 
 
        SW Coastal LA
37 
42 
72 
        SW San Bernardino
67 
67 
143 
        Saddleback Vly
132 
46 
80 
        San Gabriel Mts
67 
67 
174 
        Santa Clarita Vly
67 
67 
174 
        South Coastal LA
38 
53 
72 
        Southeast LA CO
42 
57 
65 
        Temecula Vly
67 
67 
115 
        Trona
46 
50 
50 
        Twentynine Palms
46 
67 
58 
        Victorville
50 
50 
 
        W San Bernardino M
100 
67 
174 
        W San Fernando Vly
46 
53 
159 
        W San Gabriel Vly
67 
100 
122 
Mammoth Lakes
aqi not available
aqi not available
12 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
45 
Mono Lake
aqi not available
aqi not available
Monterey Bay Area
        Carmel Valley
Good
Good
 
        Davenport
Good
Good
 
        Hollister
Moderate
Moderate
 
        King City
Moderate
Moderate
 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Moderate
Unhealthy for Sensitive Groups
80 
        Salinas
Good
Good
80 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Good
Good
 
        Scotts Valley
Moderate
Moderate
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
20 
Paradise
Moderate
Moderate
58 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
10 
Red Bluff
aqi not available
aqi not available
 
Redding
aqi not available
aqi not available
46 
Sacramento Area
        Arden Arcade-Del Paso Manor
108 
119 
97 
        Auburn
112 
122 
74 
        Colfax
112 
122 
51 
        Cool
108 
122 
90 
        Davis
84 
93 
90 
        Elk Grove
108 
119 
133 
        Folsom
108 
119 
93 
        Lincoln
112 
122 
64 
        Natomas
108 
119 
15 
        North Highlands
108 
119 
77 
        Placerville
108 
122 
90 
        Rio Vista
84 
93 
35 
        Roseville-Rocklin
112 
122 
64 
        Sacramento
108 
119 
97 
        Sloughhouse
108 
119 
133 
        Vacaville
84 
93 
93 
        Woodland
84 
93 
84 
San Diego Area
        San Diego Coast
Good
Good
40 
        San Diego Foothills
Moderate
Moderate
108 
        San Diego Mesa and Inland Valley
Moderate
Moderate
58 
San Francisco Area
        Concord
101 
67 
54 
        Fairfield
101 
67 
45 
        Fremont
55 
46 
43 
        Livermore
101 
67 
71 
        Napa
55 
46 
48 
        Oakland
61 
55 
40 
        Redwood City
55 
46 
43 
        San Francisco
61 
55 
25 
        San Jose
101 
67 
61 
        San Rafael
55 
46 
34 
        Santa Rosa
55 
46 
28 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
122 
143 
126 
        Fresno
129 
126 
 
        Hanford
119 
112 
 
        Madera
108 
115 
 
        Merced
93 
84 
 
        Modesto
112 
97 
87 
        Stockton
80 
67 
84 
        Visalia
126 
136 
143 
San Luis Obispo County
        Atascadero
71 
75 
44 
        Carrizo Plains
80 
84 
87 
        Morro Bay
30 
35 
29 
        Nipomo
36 
37 
32 
        Paso Robles
88 
90 
44 
        Red Hills
93 
95 
80 
        San Luis Obispo
36 
37 
28 
Santa Barbara County
        Carpinteria
Good
Good
29 
        Gaviota Coast
Good
Good
36 
        Goleta
Good
Good
36 
        Lompoc
Good
Good
33 
        Paradise Road
Good
Good
67 
        Santa Barbara
Good
Good
35 
        Santa Maria
Good
Good
 
        Santa Ynez
Good
Good
42 
Santa Rosa Rancheria
aqi not available
aqi not available
108 
Sequoia/Kings Canyon National Parks
61 
80 
90 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
39 
Truckee
aqi not available
aqi not available
 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
67 
Ventura County Area
        Ojai
90 
80 
90 
        Oxnard
50 
50 
39 
        Piru
85 
80 
90 
        Simi Valley
90 
80 
101 
        Thousand Oaks
65 
60 
53 
Western Nevada County
85 
aqi not available
67 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
41 
48 
50 
Yuba City/Marysville
Moderate
Moderate
51 
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.