California
 
Data and Forecasts courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170721_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
Jul 21
Sat
Jul 22
Bear Valley
aqi not available
aqi not available
 
Bishop
aqi not available
aqi not available
54 
Bishop Paiute Tribe
aqi not available
aqi not available
35 
Chester
aqi not available
aqi not available
 
Chico
Moderate
Moderate
61 
Death Valley National Park
58 
50 
74 
Forest Ranch
aqi not available
aqi not available
 
Great Basin Air District
aqi not available
aqi not available
54 
Greeley Hill
aqi not available
aqi not available
 
Gridley
Moderate
Moderate
33 
Imperial Valley
aqi not available
aqi not available
51 
Joshua Tree National Park
aqi not available
aqi not available
80 
La Grange
aqi not available
aqi not available
 
Lancaster
aqi not available
aqi not available
 
Lassen Volcanic National Park
41 
44 
 
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 
154 
        Anza Vly
55 
67 
156 
        Banning
100 
132 
129 
        Barstow
50 
67 
105 
        Big Bear Lake
100 
67 
 
        C San Bernardino M
161 
187 
185 
        C San Bernardino-1
132 
100 
204 
        C San Bernardino-2
161 
132 
204 
        Capistrano Vly
55 
50 
47 
        Central Coastal
55 
67 
47 
        Central LA CO
57 
61 
78 
        Central Orange-1
55 
55 
56 
        Central Orange-2
53 
53 
56 
        Coachella Vly
74 
132 
97 
        E San Bernardino
161 
161 
204 
        E San Fernando Vly
100 
100 
78 
        E San Gabriel V-1
132 
100 
151 
        E San Gabriel V-2
132 
132 
151 
        East Riverside CO
55 
67 
 
        Hemet/San Jacinto
67 
100 
177 
        Hesperia
67 
100 
115 
        Lake Elsinore
132 
100 
156 
        Metro Riverside CO
132 
132 
151 
        N Coastal Orange
55 
53 
70 
        NW Coastal LA
46 
55 
70 
        NW San Bernardino
161 
161 
174 
        Norco/Corona
100 
132 
151 
        North Orange CO
59 
67 
56 
        Perris Vly
132 
161 
177 
        Phelan
100 
100 
161 
        Pomona Walnut Vly
70 
100 
87 
        S Central LA CO
38 
57 
44 
        S San Gabriel Vly
46 
57 
 
        SW Coastal LA
37 
53 
70 
        SW San Bernardino
100 
132 
174 
        Saddleback Vly
50 
67 
56 
        San Gabriel Mts
74 
132 
182 
        Santa Clarita Vly
132 
161 
182 
        South Coastal LA
42 
55 
70 
        Southeast LA CO
61 
57 
56 
        Temecula Vly
61 
67 
156 
        Trona
53 
50 
108 
        Twentynine Palms
100 
67 
105 
        Victorville
55 
67 
84 
        W San Bernardino M
132 
132 
185 
        W San Fernando Vly
132 
132 
78 
        W San Gabriel Vly
132 
100 
105 
Mammoth Lakes
aqi not available
aqi not available
22 
Markleeville
aqi not available
aqi not available
 
Mendocino County
Good
Good
29 
Mono Lake
aqi not available
aqi not available
19 
Monterey Bay Area
        Carmel Valley
Moderate
Moderate
21 
        Davenport
Good
Good
 
        Hollister
Moderate
Moderate
37 
        King City
Moderate
Moderate
60 
        Marina/Seaside
Good
Good
 
        Monterey Peninsula
Good
Good
 
        Pinnacles National Monument
Moderate
Moderate
44 
        Salinas
Moderate
Moderate
60 
        San Lorenzo Valley
Moderate
Moderate
 
        Santa Cruz
Moderate
Moderate
35 
        Scotts Valley
Good
Good
 
        Watsonville
Good
Good
 
Oroville
aqi not available
aqi not available
 
Owens Lake
aqi not available
aqi not available
41 
Paradise
Moderate
Unhealthy for Sensitive Groups
77 
Point Reyes
aqi not available
aqi not available
 
Portola
aqi not available
aqi not available
 
Quincy
aqi not available
aqi not available
23 
Red Bluff
aqi not available
aqi not available
 
Redding
63 
aqi not available
47 
Sacramento Area
        Arden Arcade-Del Paso Manor
126 
133 
84 
        Auburn
126 
136 
90 
        Colfax
126 
136 
74 
        Cool
126 
133 
80 
        Davis
71 
87 
58 
        Elk Grove
126 
133 
64 
        Folsom
126 
133 
87 
        Lincoln
126 
136 
51 
        Natomas
126 
133 
 
        North Highlands
126 
133 
49 
        Placerville
126 
133 
105 
        Rio Vista
71 
87 
 
        Roseville-Rocklin
126 
136 
51 
        Sacramento
126 
133 
64 
        Sloughhouse
126 
133 
93 
        Vacaville
71 
87 
67 
        Woodland
71 
87 
67 
San Diego Area
        San Diego Coast
Good
Good
36 
        San Diego Foothills
Moderate
Unhealthy for Sensitive Groups
108 
        San Diego Mesa and Inland Valley
Moderate
Moderate
42 
San Francisco Area
        Concord
46 
87 
49 
        Fairfield
46 
87 
44 
        Fremont
38 
61 
48 
        Livermore
46 
87 
27 
        Napa
50 
55 
54 
        Oakland
53 
61 
42 
        Redwood City
38 
61 
48 
        San Francisco
53 
61 
48 
        San Jose
46 
84 
48 
        San Rafael
50 
55 
40 
        Santa Rosa
50 
55 
23 
San Jacinto
aqi not available
aqi not available
 
San Joaquin Valley Area
        Bakersfield
108 
112 
48 
        Fresno
108 
70 
46 
        Hanford
62 
93 
47 
        Madera
100 
66 
45 
        Merced
87 
90 
97 
        Modesto
84 
84 
64 
        Stockton
59 
74 
43 
        Visalia
100 
70 
71 
San Luis Obispo County
        Atascadero
45 
44 
34 
        Carrizo Plains
57 
55 
49 
        Morro Bay
26 
28 
18 
        Nipomo
53 
53 
78 
        Paso Robles
45 
44 
43 
        Red Hills
46 
49 
48 
        San Luis Obispo
29 
30 
21 
Santa Barbara County
        Carpinteria
Good
Good
29 
        Gaviota Coast
Good
Good
34 
        Goleta
Good
Good
36 
        Lompoc
Good
Good
72 
        Paradise Road
Good
Good
39 
        Santa Barbara
Good
Good
34 
        Santa Maria
Good
Good
45 
        Santa Ynez
Good
Good
26 
Santa Rosa Rancheria
aqi not available
aqi not available
45 
Sequoia/Kings Canyon National Parks
93 
112 
112 
South Lake Tahoe
aqi not available
aqi not available
 
Tahoe City area
aqi not available
aqi not available
15 
Truckee
aqi not available
aqi not available
28 
Tuolumne City
aqi not available
aqi not available
 
Tuolumne County
aqi not available
aqi not available
90 
Ventura County Area
        Ojai
55 
65 
54 
        Oxnard
55 
55 
248 
        Piru
80 
90 
74 
        Simi Valley
85 
95 
84 
        Thousand Oaks
50 
55 
58 
Western Nevada County
140 
140 
90 
Yankee Hill
aqi not available
aqi not available
 
Yosemite National Park
49 
50 
163 
Yuba City/Marysville
Moderate
Unhealthy for Sensitive Groups
54 
Yucca Vly
67 
100 
 
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.