Air Pollution in California: Real-time Air Quality Index Visual Map

Unhealthy for sensitive groups
Very Unhealthy
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The GAIA air quality monitoring stations are using high-tech laser particle sensors to measure in real-time PM2.5 pollution, which is one of the most harmful air pollutants.

Very easy to set up, they only require a WIFI access point and a USB power supply. Once connected, air pollution levels are reported instantaneously and in real-time on our maps

Stations on the map

There are 113 stations on the map: Westmorland, Imperial, California (64) - Niland-English Road, Imperial, California (59) - Paradise - Theater, Butte, California (59) - Rubidoux - Mission Blvd, Riverside (58) - Calexico-Ethel Street, Imperial, California (56) - Madera City, Madera, California (55) - Ontario-Route 60 Near Road, San Bernardino, California (55) - Reseda, Los Angeles (54) - Rio Vista-St Francis Way, Solano, California (53) - Rio Vista-YS, Solano, California (53) - San Pablo-Rumrill, Contra Costa, California (53) - Grass Valley-Litton Building, Nevada, California (52) - Banning-Airport, Riverside (52) - Long Beach-Route 710 Near Road, Los Angeles, California (51) - Lake Gregory (Crestline), San Bernardino (51) - Porterville, Tulare, California (50) - Santa Clarita-Placerita, Los Angeles (50) - Joshua Tree NP - Cottonwood #2, Riverside, California (50) - Victorville - Park Avenue, San Bernardino, California (47) - Lebec, Kern, California (46) - Quincy-N Church Street, Plumas, California (41) - Glendora-Laurel, Los Angeles (40) - Bishop-White Mountain Research Center, Inyo, California (40) - Colfax-City Hall, Placer, California (38) - San Jose - Jackson St, Santa Clara, California (38) - Simi Valley - Cochran Street, Ventura, California (38) - Anaheim-Loara School, Orange, California (36) - Tahoe City-221 Fairway Drive, Placer, California (36) - Camp Pendleton, San Diego, California (36) - Los Angeles-North Main Street (35) - Carmel Valley-Ford Road, Monterey, California (34) - Thousand Oaks-Moorpark Road, Ventura, California (34) - Hanford-S Irwin Street, Kings, California (34) - Livermore - Rincon, Alameda, California (34) - Folsom-Natoma Street, Sacramento, California (34) - Corcoran-Patterson Avenue, Kings, California (34) - Red Bluff - Walnut St, Tehama, California (32) - Alpine-Victoria Drive, San Diego, California (30) - Turlock-S Minaret Street, Stanislaus, California (30) - Sacramento-Del Paso Manor, Sacramento, California (30) - Lake Elsinore-W Flint Street, Riverside (30) - Truckee - Fire Station, Nevada, California (30) - Piru - Pacific, Ventura, California (30) - North Hollywood, Los Angeles, California (30) - Keeler-Cerro Gordo Road, Inyo, California (30) - Manteca AMS, San Joaquin, California (30) - Anderson-North Street, Shasta, California (30) - Salinas #3, Monterey, California (30) - Merced - Coffee Road, Merced, California (29) - Otay Mesa - Donovan Correctional Facility, San Diego, California (29) - Springville-Forest Service, Tulare, California (29) - El Cajon-Redwood Avenue, San Diego, California (29) - Fresno - Drummond Street, Fresno, California (29) - El Cajon-Lexington Elementary School, San Diego, California (29) - Madera - Pump Yard, Madera, California (28) - Redwood City, San Mateo, California (28) - Vacaville-Ulatis Drive, Solano, California (28) - Sloughhouse, Sacramento, California (28) - Oakland - West, Alameda, California (28) - Roseville-N Sunrise Ave, Placer, California (28) - Chico - East Avenue, Butte, California (28) - Fresno - Garland, Fresno, California (27) - Redding - Health Department, Shasta, California (26) - Colusa-Sunrise Blvd, Colusa, California (26) - Vallejo, Solano, California (26) - San Diego - Sherman Elementary School, San Diego, California (26) - Willows-Colusa, Glenn, California (26) - Lompoc-South H Street, Santa Barbara, California (26) - Clovis-N Villa Avenue, Fresno, California (26) - Portola - Gulling Street, Plumas, California (25) - Oakland-Laney College, Alameda, California (25) - San Francisco-Arkansas Street, San Francisco, California (25) - Gridley, Butte, California (25) - Santa Barbara-National Guard Armory, Santa Barbara, California (25) - Sequoia National Park-Ash Mountain, Tulare, California (25) - Oakland - East, Alameda, California (25) - Bakersfield-California Avenue, Kern, California (25) - Huron - 4th Street, Fresno, California (25) - Elk Grove - Bruceville Road, Sacramento, California (25) - El Rio-Rio Mesa School #2, Ventura, California (25) - Modesto-14th Street, Stanislaus, California (25) - San Rafael, Marin, California (25) - Yuba City, Sutter, California (24) - King City - Pearl, Monterey, California (24) - Sebastopol-103 Morris Street, Sonoma, California (24) - Tracy - Airport, San Joaquin, California (24) - Woodland-Gibson Road, Yolo, California (24) - Hollister-Fairview Road, San Benito, California (23) - Tranquility, Fresno, California (23) - Concord, Contra Costa, California (23) - Davis-UCD Campus, Yolo, California (23) - Pinehurst-Forest Service, Fresno, California (22) - San Andreas-Gold Strike Road, Calaveras, California (22) - Santa Cruz - Soquel Avenue, Santa Cruz, California (22) - Gilroy-9th Street, Santa Clara, California (22) - Atascadero-Lift Station #5, San Luis Obispo, California (22) - Ojai - East Ojai Av, Ventura, California (21) - Goleta-Fairview, Santa Barbara, California (18) - San Lorenzo Valley Middle School, Santa Cruz, California (17) - Ukiah - Library, Mendocino, California (17) - Tahoe City - 221 Fairway Drive, Placer, California (17) - Yosemite Village - Visitor Center, Mariposa, California (17) - CDF - Arroyo Grande, San Luis Obispo, California (13) - Nipomo-Guadalupe Road, San Luis Obispo, California (12) - Sacramento - 1309 T Street, Sacramento, California (12) - Atascadero Lift Station #5, San Luis Obispo, California (10) - Sebastopol, Sonoma, California (9) - Lincoln-2885 Moore Road, Placer, California (9) - San Jose-Knox Avenue, Santa Clara, California (9) - Auburn - Atwood Rd, Placer, California (9) - Mammoth Lakes-Gateway HC, Mono, California (6) - Berkeley-Aquatic Park, Alameda, California (no data) - Chester, Plumas, California (no data)

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Countries (153)
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Air Quality Rankings

About the Air Quality and Pollution Measurement:

About the Air Quality Levels

AQIAir Pollution LevelHealth ImplicationsCautionary Statement (for PM2.5)
0 - 50GoodAir quality is considered satisfactory, and air pollution poses little or no riskNone
51 -100ModerateAir 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.Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150Unhealthy for Sensitive GroupsMembers of sensitive groups may experience health effects. The general public is not likely to be affected.Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200UnhealthyEveryone may begin to experience health effects; members of sensitive groups may experience more serious health effectsActive children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300Very UnhealthyHealth warnings of emergency conditions. The entire population is more likely to be affected.Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+HazardousHealth alert: everyone may experience more serious health effectsEveryone should avoid all outdoor exertion

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check blog.

Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.


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