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

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Air Quality Index

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

Stations on the map

There are 136 stations on the map: Glendora-Laurel, Los Angeles (82) - Los Angeles-North Main Street (78) - Mexicali-UABC, Mexicali, California (72) - Porterville, Tulare, California (68) - Reseda, Los Angeles (66) - Folsom-Natoma Street, Sacramento, California (65) - Calexico-Ethel Street, Imperial, California (63) - Keeler-Cerro Gordo Road, Inyo, California (61) - Berkeley-Aquatic Park, Alameda, California (61) - Truckee - Fire Station, Nevada, California (61) - Vallejo, Solano, California (59) - San Francisco-Arkansas Street, San Francisco, California (55) - Oakland - West, Alameda, California (55) - Mexicali-Cobach, Mexicali, California (55) - Mojave, Kern, California (53) - San Jose - Jackson St, Santa Clara, California (53) - Oakland-Laney College, Alameda, California (53) - Concord, Contra Costa, California (53) - Madera - Pump Yard, Madera, California (51) - Gridley, Butte, California (50) - San Pablo-Rumrill, Contra Costa, California (50) - Simi Valley - Cochran Street, Ventura, California (50) - Bombay Beach, Imperial, California (48) - Banning-Airport, Riverside (48) - Anderson-North Street, Shasta, California (47) - Oakland - East, Alameda, California (46) - Madera City, Madera, California (44) - Stockton-Hazelton, San Joaquin, California (42) - Thousand Oaks-Moorpark Road, Ventura, California (42) - San Jose-Knox Avenue, Santa Clara, California (42) - El Rio-Rio Mesa School #2, Ventura, California (42) - Turlock-S Minaret Street, Stanislaus, California (42) - Auburn-11645 Atwood Road, Placer, California (42) - Merced - Coffee Road, Merced, California (42) - Visalia, Tulare, California (42) - San Lorenzo Valley Middle School, Santa Cruz, California (42) - El Cajon-Redwood Avenue, San Diego, California (41) - El Cajon-Lexington Elementary School, San Diego, California (41) - Santa Clarita-Placerita, Los Angeles (38) - San Andreas-Gold Strike Road, Calaveras, California (38) - Roseville-N Sunrise Ave, Placer, California (38) - Lincoln-1445 1st Street, Placer, California (38) - Lake Gregory (Crestline), San Bernardino (38) - Santa Maria - South Broadway, Santa Barbara, California (38) - Livermore - Rincon, Alameda, California (38) - Rio Vista-YS, Solano, California (38) - Upland, San Bernardino (34) - Mira Loma-Van Buren, Riverside, California (34) - Elk Grove - Bruceville Road, Sacramento, California (34) - Rubidoux - Mission Blvd, Riverside (34) - Woodland-Gibson Road, Yolo, California (34) - Santa Barbara-National Guard Armory, Santa Barbara, California (34) - Gilroy-9th Street, Santa Clara, California (34) - Rio Vista-St Francis Way, Solano, California (34) - Piru - Pacific, Ventura, California (34) - Yuba City, Sutter, California (34) - Modesto-14th Street, Stanislaus, California (34) - Davis-UCD Campus, Yolo, California (34) - Tracy - Airport, San Joaquin, California (32) - Sequoia National Park-Ash Mountain, Tulare, California (32) - Niland-English Road, Imperial, California (31) - San Rafael, Marin, California (30) - Clovis-N Villa Avenue, Fresno, California (30) - Santa Cruz - Soquel Avenue, Santa Cruz, California (30) - Bakersfield-California Avenue, Kern, California (30) - Fresno - Drummond Street, Fresno, California (30) - Fresno - Garland, Fresno, California (30) - Huron - 4th Street, Fresno, California (29) - Salinas #3, Monterey, California (29) - Bishop-Line, Inyo, California (27) - Sonny Bono, Imperial, California (26) - Grass Valley-Litton Building, Nevada, California (26) - Goleta-Fairview, Santa Barbara, California (26) - South Long Beach, Los Angeles, California (25) - Sloughhouse, Sacramento, California (25) - Colfax-City Hall, Placer, California (25) - Lincoln - 1445 1st St., Placer, California (25) - Sebastopol-103 Morris Street, Sonoma, California (25) - Red Bluff - Walnut St, Tehama, California (25) - Tranquility, Fresno, California (25) - Chico - East Avenue, Butte, California (25) - Naval Test Base, Imperial, California (24) - King City - Pearl, Monterey, California (24) - Temecula - Lake Skinner, Riverside, California (24) - Salton City, Imperial, California (23) - Alpine-Victoria Drive, San Diego, California (23) - San Luis Obispo-Higuera Street, San Luis Obispo, California (22) - Quincy-N Church Street, Plumas, California (21) - Colusa-Sunrise Blvd, Colusa, California (21) - Lebec, Kern, California (21) - Redwood City, San Mateo, California (21) - Yosemite Village - Visitor Center, Mariposa, California (21) - Vacaville-Ulatis Drive, Solano, California (21) - Atascadero Lift Station #5, San Luis Obispo, California (19) - Otay Mesa - Donovan Correctional Facility, San Diego, California (18) - Paradise - Theater, Butte, California (18) - Napa-Jefferson Avenue, Napa, California (17) - Hollister-Fairview Road, San Benito, California (17) - Chester, Plumas, California (17) - Carmel Valley-Ford Road, Monterey, California (17) - Lompoc-South H Street, Santa Barbara, California (17) - Nipomo-Guadalupe Road, San Luis Obispo, California (17) - Portola - Gulling Street, Plumas, California (17) - Ojai - East Ojai Av, Ventura, California (16) - Anaheim-Loara School, Orange, California (16) - Lake Elsinore-W Flint Street, Riverside (16) - Sacramento - 1309 T Street, Sacramento, California (15) - Atascadero-Lift Station #5, San Luis Obispo, California (14) - Corcoran-Patterson Avenue, Kings, California (13) - Ukiah - Library, Mendocino, California (13) - Salton Sea Park, Riverside, California (10) - Camp Pendleton, San Diego, California (10) - Willits - Justice Center, Mendocino, California (9) - Manteca AMS, San Joaquin, California (6) - CDF - Arroyo Grande, San Luis Obispo, California (5) - Torres - Martinez, Riverside, California (5) - Sebastopol, Sonoma, California (0) - Auburn - Atwood Rd, Placer, California (0) - Tahoe City - 221 Fairway Drive, Placer, California (0) - Sacramento-Del Paso Manor, Sacramento, California (0) - Kernville-Forest Service, Kern, California (no data) - North Long Beach (Long Beach), Los Angeles (no data) - Burbank, Los Angeles (no data) - Willows-Colusa, Glenn, California (no data) - Springville-Forest Service, Tulare, California (no data) - Atascadero-Lewis Avenue, San Luis Obispo, California (no data) - Hanford-S Irwin Street, Kings, California (no data) - Point Reyes, Marin, California (no data) - Tahoe City-221 Fairway Drive, Placer, California (no data) - Long Beach-Route 710 Near Road, Los Angeles, California (no data) - Riverside-Magnolia, Riverside (no data) - Portola - Nevada Street, Plumas, California (no data) - Ontario-Route 60 Near Road, San Bernardino, California (no data) - Pinehurst-Forest Service, Fresno, California (no data) - Escondido-E Valley Parkway, San Diego, California (no data) - San Diego - Beardsley, San Diego, California (no data)


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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 www.myhealthbeijing.com 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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