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Air quality in California
Air quality index (AQI) and PM2.5 air pollution in California
LIVE AQI CITY RANKING
Real-time California
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Palm Desert | 156 |
| 2 | Cathedral City | 102 |
| 3 | Mecca | 80 |
| 4 | Indio | 54 |
| 5 | Rancho Tehama Reserve | 54 |
| 6 | Calipatria | 40 |
| 7 | Dinuba | 38 |
| 8 | Lucerne Valley | 38 |
| 9 | Trona | 37 |
| 10 | North Hollywood | 36 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
5390 Contributors
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3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
News
The latest air quality news and resources.
California air quality data attribution
5390Contributors
- California Air Resources Board (CARB)
226 stations
- Spare the Air - Sacramento Region
12 stations
USA National Park Service23 stations
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El Dorado County Air Quality Management District10 stations
Palo Alto OES1 station
19 Government Contributors
Coalition for Clean Air (CCA)247 stations
Climate First: Replacing Oil and Gas (CFROG)3 stations
- Safer Together San Francisco
1 station
4 Non-profit organization Contributors
- Oakland Unified School District
9 stations
- Coachella Valley Unified School District
10 stations
- El Centro Elementary School District
2 stations
- Ackerman Charter School District
1 station
Ravenswood City School District IOT2 stations
- West Contra Costa Unified School District
3 stations
Harvard-Westlake School3 stations
- Calexico Unified School District
2 stations
- Livermore Valley Unified School District
1 station
- Plaza Community Services La Roca Verde
1 station
- Los Angeles Unified School District
1 station
- nora caruso
1 station
- Rialto Unified School District
1 station
Grove Preschool2 stations
USC Environmental Health Centers1 station
15 Educational Contributors
Baldacci Family Vineyards1 station
Scribe Winery1 station
Forster Ranch1 station
IQAir Air Quality Science Team5 stations
- Stripe
1 station
5 Corporate Contributors
- Weledelzeergeleerde Heer
1 station
Pat Conway1 station
- Gustavo R. Guimarães
1 station
Aaron Solochek1 station
- Steve
9 stations
- Timothy Wilson
1 station
- -
1 station
- ddavies0001
2 stations
- IQAir community Member
1 station
- Nathan Pyle, MA
1 station
- justin bright
1 station
Hunter1 station
- Chuck Kissner
1 station
- Chris
1 station
- Alejandra Perez
1 station
- CK
1 station
- chris
1 station
- Ben
1 station
- Brent
1 station
- JT
1 station
- IQAir Community Member
1 station
- Charlie Leonard
1 station
- AC
1 station
Camille1 station
Nick Chapman1 station
- IQAir Community Member
1 station
- Jeremy
1 station
KellerG1 station
- IQAir Community Member
1 station
- Anonymous
1 station
janet fouts1 station
- dra
1 station
- Phong Nguyen
1 station
- WH57
1 station
- kevin
1 station
- Igor Solomennikov
1 station
- Anonymous
2 stations
- Mat Henley
1 station
BS2 stations
- tripleD
1 station
- IQAir PDR Member
1 station
- Dan P
1 station
- Travis Thompson
1 station
Lane@IQAir1 station
- Chandler Dunlap - Dutch Bros
2 stations
- Anonymous
1 station
- IQAir Community Member
1 station
- Robert M
1 station
- A & O Aryal
1 station
Daniel Rich1 station
treemocker1 station
Mario Zaizar1 station
Friendly Neighbor1 station
- FlyGirl
1 station
- Lars
1 station
Hippopo1 station
- Hogwarts
1 station
- Stephen Schlie
1 station
- Shawn
1 station
- Brian Morton
1 station
- efeff
1 station
- Brian Goshorn
1 station
- Spongebob Airpants
1 station
- Anonymous
1 station
- Matt
1 station
- William
1 station
- A.Kuehlmann
1 station
ChemistChristi1 station
- Leslie Barnes
1 station
- Hugh Wimberly
1 station
Upavas1 station
- Max C
1 station
HGR barn1 station
anonymous1 station
Jim Minton1 station
- Ben
1 station
- JMA
1 station
- anonymoose
1 station
Jim Cornick1 station
- Michael Nielsen
1 station
- C.L.
1 station
Will Mason2 stations
- Meinrat Andreae
1 station
- nontexan
1 station
- Simon Walker
1 station
Anonymous1 station
chubert1 station
- Randy Steen
1 station
- Lorien
1 station
- Karl8704
1 station
- Wim Coekaerts
1 station
Darell1 station
AL1 station
Red Dog Ranch1 station
- Adam
1 station
- Jonathan Sorenson
1 station
- Mark Legassie
1 station
- Anonymous
1 station
- Michi Watchdog
1 station
- EJ
1 station
- Nicklas Johnson
1 station
- John Grossman
1 station
- KKastle IQ
1 station
- Erina Love
1 station
- Margot
1 station
- FamilyD
1 station
JGM1 station
Pacific View Air1 station
- GB
1 station
- Sasha
1 station
JC1 station
- Wikinaut
1 station
- Matt Newkirk
1 station
- russ
1 station
- msuttie
1 station
- rkjunior
1 station
J1 station
- Erik Bjorling
1 station
- Quail Mountain Lane
1 station
- Logan Bruns
1 station
- rbernabe
1 station
- KBT
1 station
- mjburns
1 station
- Anonymous
1 station
- quick.wood7910
1 station
- Patrick
1 station
- kelp
1 station
- GB
1 station
Neighborhood Brush Creek1 station
- IQAir Community Member
1 station
Brink1 station
Caspar1 station
Aaron Graf1 station
- Jack
1 station
- khowser10
1 station
- Integrity
1 station
- ucweather
1 station
Sanchez Way1 station
- Willow Glen - Sandra
1 station
- David
1 station
- variousplaces
1 station
- John Wright
1 station
- Robert Hawthorne
1 station
- Shrisha Radhakrishna
1 station
- Rana Rekhi
1 station
- Shearwater
1 station
- bearklaw
1 station
- Tom Bacus
1 station
- BJ
1 station
- eliotsensor
1 station
- Anonymous
1 station
- kpurvis
1 station
SP1 station
- David T
1 station
Rob Darby1 station
Tom Conrad1 station
- Chuck Tyler
1 station
- Chris Minick
1 station
- LHJB
1 station
- csm10495
1 station
- Steve Taubman
1 station
- Eric Sun
1 station
- Terrace 500
1 station
- Grid Man
1 station
- Gennady
1 station
- johnnygerman
1 station
michael price1 station
- Allen Hutchison
1 station
Stephen Franklin1 station
- E P
1 station
- alesl
1 station
- Jeff Kessler
1 station
- Jim Crawford
1 station
- JS
1 station
- Stan Watt
1 station
- David P. Balogh
1 station
176 Individual Contributors
5171 Anonymous contributors5171 stations
5171 Anonymous Contributors
13 Data sources
PurpleAir
Clarity Movement Co.- California Air Resources Board (CARB)
AirNow
IQAir- Spare the Air - Sacramento Region
- San Diego County Air Pollution Control District (SDAPCD)
Imperial County Department of Toxic Substance and Comite Civico del Valle- San Joaquin Valley Air Pollution Control District
- Bay Area Air Quality Management District (BAAQMD)
Imperial County Air Pollution Control District (ICAPCD)- USA National Park Service
Santa Barbara County Air Pollution Control District
Which is the most polluted city in California?
- Palm Desert 156
- Cathedral City 102
- Mecca 80
- Indio 54
- Rancho Tehama Reserve 54
- Calipatria 40
- Dinuba 38
- Lucerne Valley 38
- Oasis 38
- Vista Santa Rosa 38
- Indian Wells 37
- Trona 37
- Desert Shores 36
- Kern 36
- North Hollywood 36
- Bermuda Dunes 35
- Rancho Mirage 35
- Thousand Palms 35
- Tujunga 34
- Yosemite Np Turtleback Dome 34
- Burney 33
- Crestline 33
- Rainbow 33
- Sutter 33
- Yucaipa 33
- Desert Edge 32
- Golden Hills 32
- Sequoia National Park 32
- Twentynine Palms 32
- Garnet 31
- San Fernando 31
- Sherman Oaks 31
- Willowbrook 31
- Clovis 30
- Coto De Caza 30
- Foothill Ranch 30
- Idyllwild 30
- Laguna Hills 30
- Madera 30
- Portola Hills 30
- Rancho Santa Margarita 30
- Van Nuys 30
- Desert Hot Springs 29
- Dirty Socks 29
- El Cerrito Corona 29
- Fresno 29
- Glen Avon 29
- Home Gardens 29
- La Canada Flintridge 29
- Modesto 29
- Mojave 29
- San Benito 29
- Villa Park 29
- Winchester 29
- Banning 28
- Barstow 28
- Encino 28
- Garden Grove 28
- Inyokern 28
- Jurupa Valley 28
- Koreatown 28
- Lakeland Village 28
- Los Serranos 28
- Mead Valley 28
- Meadowbrook 28
- Midway City 28
- Niland 28
- Norco 28
- Pedley 28
- Placentia 28
- Searles Valley 28
- Stanton 28
- Visalia 28
- Westminster 28
- Woodcrest 28
- Artesia 27
- Bellflower 27
- Bodfish 27
- Cabazon 27
- California City 27
- Camp Pendleton North 27
- Canyon Lake 27
- Cerritos 27
- Chino 27
- Claremont 27
- Compton 27
- East Hemet 27
- East La Mirada 27
- Fountain Valley 27
- Good Hope 27
- Green Acres 27
- Hawaiian Gardens 27
- Highgrove 27
- Homeland 27
- La Palma 27
- Los Alamitos 27
- March Air Force Base 27
- Menifee 27
- Montclair 27
- Newhall 27
- Nuevo 27
- Pinon Hills 27
- Quail Valley 27
- Reseda 27
- Romoland 27
- Rossmoor 27
- Rowland Heights 27
- Rubidoux 27
- Santa Fe Springs 27
- Sedco Hills 27
- Shandon 27
- South San Jose Hills 27
- South Whittier 27
- Sun City 27
- Sunnyslope 27
- Valle Vista 27
- Walnut 27
- Wildomar 27
- Aguanga 26
- Avocado Heights 26
- Bell Gardens 26
- Boron 26
- Canoga Park 26
- Charter Oak 26
- Citrus 26
- Commerce 26
- Covina 26
- East Rancho Dominguez 26
- Grand Terrace 26
- Huron 26
- Irwindale 26
- Joshua Tree 26
- La Puente 26
- Maricopa 26
- Mentone 26
- Mesa Verde 26
- Montebello 26
- Murrieta Hot Springs 26
- North El Monte 26
- Paramount 26
- Pico Rivera 26
- Rialto 26
- San Antonio Heights 26
- San Dimas 26
- South El Monte 26
- Valinda 26
- Vincent 26
- West Puente Valley 26
- West Whittier-Los Nietos 26
- Adelanto 25
- Azusa 25
- Barstow Heights 25
- Bonsall 25
- Bradbury 25
- East Los Angeles 25
- East Pasadena 25
- East San Gabriel 25
- Echo Park 25
- Edwards Air Force Base 25
- Florence-Graham 25
- Hanford 25
- Hollywood 25
- Keeler 25
- Kelso 25
- Lake Los Angeles 25
- Lebec 25
- Lenwood 25
- Mayflower Village 25
- Merced 25
- Muscoy 25
- North Edwards 25
- Oak Hills 25
- Old Fig Garden 25
- San Francisco 25
- Shafter 25
- South San Gabriel 25
- Temple City 25
- Walnut Park 25
- West Rancho Dominguez 25
- Westmont 25
- Westmorland 25
- Alondra Park 24
- Arvin 24
- Bakersfield 24
- Big River 24
- Boyle Heights 24
- Buttonwillow 24
- Camp Pendleton South 24
- Carson 24
- Del Aire 24
- Fairbanks Ranch 24
- Fort Irwin 24
- Glendale 24
- Heber 24
- Hidden Meadows 24
- Holtville 24
- La Jolla Shores 24
- La Quinta 24
- Lawndale 24
- Lennox 24
- Lost Hills 24
- Mountain View Acres 24
- Palmdale 24
- Phelan 24
- San Pedro 24
- Santa Margarita 24
- Shaver Lake 24
- Silver Lakes 24
- Sorrento Valley 24
- Spring Valley Lake 24
- Studio City 24
- Sun Village 24
- Three Rivers 24
- Universal City 24
- Weldon 24
- West Athens 24
- Acton 23
- Agua Dulce 23
- Alpaugh 23
- Anza 23
- Century City 23
- China Lake Acres 23
- Desert View Highlands 23
- El Segundo 23
- Eucalyptus Hills 23
- Gardena 23
- Idyllwild-Pine Cove 23
- Julian 23
- La Crescenta-Montrose 23
- La Mesa 23
- Ladera Heights 23
- Leona Valley 23
- Lynwood 23
- Maywood 23
- McFarland 23
- Mira Mesa 23
- Miramonte 23
- National City 23
- Needles 23
- North Hills 23
- Northridge 23
- Palos Verdes Estates 23
- Porterville 23
- Rolling Hills 23
- San Diego Country Estates 23
- San Pasqual 23
- Seeley 23
- Signal Hill 23
- Sunland 23
- Tracy 23
- Val Verde 23
- Valencia 23
- Winter Gardens 23
- Big Bear City 22
- Bostonia 22
- Casa de Oro-Mount Helix 22
- Chula Vista 22
- Crest 22
- Earlimart 22
- Granite Hills 22
- Greenacres 22
- Harbison Canyon 22
- Hidden Hills 22
- Huntington Park 22
- Imperial Beach 22
- Jamul 22
- La Presa 22
- Las Flores 22
- Littlerock 22
- Loma Linda 22
- Morro Bay 22
- Rancho San Diego 22
- Richgrove 22
- Ridgecrest 22
- Rosedale 22
- Salton City 22
- Shadow Hills 22
- Teviston 22
- Agoura 21
- Altadena 21
- Big Bear Lake 21
- Descanso 21
- Imperial 21
- Lamont 21
- Lancaster 21
- Lomita 21
- Los Angeles 21
- Oceano 21
- Olancha 21
- Pixley 21
- San Bernardino 21
- San Gabriel 21
- Santa Susana 21
- Stallion Springs 21
- Tranquillity 21
- Turlock 21
- Weedpatch 21
- Yosemite Valley 21
- Anaheim 20
- Baldwin Park 20
- Camp Nelson 20
- East Porterville 20
- Kernville 20
- La Habra 20
- Lake Isabella 20
- Oak View 20
- Pasadena 20
- Pine Mountain Club 20
- Pine Valley 20
- Poplar-Cotton Center 20
- San Pablo 20
- Sky Valley 20
- Springville 20
- Strathmore 20
- Tipton 20
- Wofford Heights 20
- Woodville 20
- Beaumont 19
- Beverly Hills 19
- Calimesa 19
- Castaic 19
- Chatsworth 19
- Ford City 19
- Ladera Ranch 19
- Lindsay 19
- Macdoel 19
- McCloud 19
- Newman 19
- Orange 19
- Palm Springs 19
- Piru 19
- Rosamond 19
- Sierra Madre 19
- South Gate 19
- South Taft 19
- Victorville 19
- West Hills 19
- Westlake Village 19
- Arcadia 18
- Fallbrook 18
- Farmersville 18
- Frazier Park 18
- Kettleman City 18
- Matheny 18
- Monrovia 18
- North Fork 18
- Ojai 18
- Silver Lake 18
- Squaw Valley 18
- Taft Heights 18
- Willows 18
- Armona 17
- Auberry 17
- Avenal 17
- Bill Stanley 17
- Blythe 17
- Bonadelle Ranchos-Madera Ranchos 17
- Calexico 17
- Cherry Valley 17
- Coachella 17
- Del Rey 17
- Easton 17
- Escalon 17
- Fillmore 17
- Goshen 17
- Home Garden 17
- Hume 17
- Inyo 17
- Ivanhoe 17
- Kingsburg 17
- Lemoore 17
- Lemoore Station 17
- London 17
- Lone Pine 17
- Minkler 17
- Orange Cove 17
- Orland 17
- Patterson Tract 17
- Pine Grove 17
- Redlands 17
- Selma 17
- Stratford 17
- Sunnyside 17
- Tarpey Village 17
- Venice 17
- Woodlake 17
- Wrightwood 17
- Biola 16
- Caruthers 16
- Cudahy 16
- Cypress 16
- Duarte 16
- East Sonora 16
- Fairmead 16
- Fowler 16
- Gerber 16
- Glendora 16
- Hesperia 16
- Laton 16
- Le Grand 16
- Madera Acres 16
- Marina del Rey 16
- Moorpark 16
- Ontario 16
- Oxnard 16
- Parksdale 16
- Parkwood 16
- Planada 16
- Rancho Palos Verdes 16
- Red Bluff 16
- Santa Paula 16
- Saticoy 16
- Simi Valley 16
- Soulsbyville 16
- Tehama 16
- Waterford 16
- West Park 16
- Winton 16
- Woodland Hills 16
- Alhambra 15
- Bear Valley Springs 15
- Bell 15
- Bishop 15
- Blackhawk 15
- Bodega Bay 15
- Bonita 15
- Bret Harte 15
- Bystrom 15
- Casa Conejo 15
- Channel Islands Beach 15
- Cutler 15
- Del Rio 15
- Delhi 15
- Denair 15
- Dixon Lane-Meadow Creek 15
- El Rio 15
- Empire 15
- Hamilton City 15
- Highland 15
- Hilmar-Irwin 15
- Keyes 15
- Lakehead-Lakeshore 15
- Livingston 15
- Long Beach 15
- Meiners Oaks 15
- Mendota 15
- Mira Monte 15
- Monterey Park 15
- Riverbank 15
- Riverdale Park 15
- Salida 15
- San Marino 15
- Shackelford 15
- Stanislaus 15
- Summerland 15
- Thousand Oaks 15
- Tuolumne City 15
- Upland 15
- West Modesto 15
- Big Pine 14
- Bloomington 14
- Camino 14
- Cayucos 14
- Cedar Ridge 14
- Clay 14
- Dogtown 14
- Dos Palos 14
- El Cajon 14
- Forest Ranch 14
- Gustine 14
- Lockeford 14
- Norwalk 14
- Orleans 14
- Patterson 14
- Rio Vista 14
- Santa Clarita 14
- South Dos Palos 14
- South Pasadena 14
- Terra Bella 14
- Valley Springs 14
- Ventura 14
- View Park-Windsor Hills 14
- West Bishop 14
- West Carson 14
- West Covina 14
- West Hollywood 14
- Yucca Valley 14
- August 13
- Bella Vista 13
- Buena Park 13
- Butte 13
- Carmel Valley Village 13
- Carpinteria 13
- Collierville 13
- Coronado 13
- Country Club 13
- Exeter 13
- Foothill Farms 13
- French Camp 13
- Garden Acres 13
- Green Valley 13
- Hacienda Heights 13
- Herald 13
- Kennedy 13
- La Mirada 13
- Lake Nacimiento 13
- Lincoln Village 13
- Los Olivos 13
- Magalia 13
- Mission Hills 13
- Morada 13
- Mountain Ranch 13
- Opal Cliffs 13
- Pasatiempo 13
- Rancho Penasquitos 13
- Red Corral 13
- Rough and Ready 13
- Taft Mosswood 13
- Thornton 13
- Toro Canyon 13
- Vandenberg Air Force Base 13
- Vineyard 13
- Amesti 12
- Antelope 12
- Apple Valley 12
- Aptos Hills-Larkin Valley 12
- Auburn Lake Trails 12
- Berry Creek 12
- Boronda 12
- Borrego Springs 12
- Brawley 12
- Callender 12
- Camarillo 12
- Cambrian Park 12
- Castroville 12
- Coalinga 12
- Colusa 12
- Corona 12
- Downey 12
- East Foothills 12
- El Centro 12
- Florin 12
- Fontana 12
- Fullerton 12
- Grover Beach 12
- Interlaken 12
- Isla Vista 12
- King City 12
- Lake Elsinore 12
- Lake of the Pines 12
- Las Lomas 12
- Linda 12
- Lompico 12
- Los Alamos 12
- Mount Hermon 12
- North Highlands 12
- Oakhurst 12
- Olivehurst 12
- Orcutt 12
- Pajaro 12
- Plumas Lake 12
- Ridgemark 12
- Rolling Hills Estates 12
- Rosemont 12
- San Andreas 12
- San Joaquin 12
- Seacliff 12
- Seven Trees 12
- Sheridan 12
- Sisquoc 12
- South Yuba City 12
- Spring Valley 12
- Thermal 12
- Thermalito 12
- Walnut Grove 12
- Whittier 12
- Agoura Hills 11
- Ashland 11
- Bayview 11
- Bertsch-Oceanview 11
- Bethel Island 11
- Biggs 11
- Bonny Doon 11
- Bridgeport 11
- Camp Meeker 11
- Caspar 11
- Central Valley (historical) 11
- Cherryland 11
- Chualar 11
- Coleville 11
- Colma 11
- Colton 11
- Del Mar 11
- Diamond Bar 11
- Encinitas 11
- Foresthill 11
- Fruitridge Pocket 11
- Georgetown 11
- Gonzales 11
- Grass Valley 11
- Humboldt Hill 11
- Inglewood 11
- Knightsen 11
- Lake Arrowhead 11
- Malibu 11
- Manhattan Beach 11
- Meadow Vista 11
- Moreno Valley 11
- Nipomo 11
- Oroville East 11
- Paradise 11
- Parkway 11
- Pomona 11
- Redwood Shores 11
- Santa Barbara 11
- Santa Monica 11
- Santee 11
- Seal Beach 11
- Sonora 11
- Taft 11
- Tehachapi 11
- Tierra Buena 11
- Topanga 11
- Torrance 11
- Tuolumne 11
- Visitacion Valley 11
- Yuba City 11
- Acalanes Ridge 10
- Aliso Viejo 10
- Bass Lake 10
- Campbell 10
- Corralitos 10
- Cutten 10
- Davenport 10
- Delano 10
- Fort Jones 10
- Freedom 10
- Gridley 10
- Guerneville 10
- Hawthorne 10
- Hermosa Beach 10
- Hoopa 10
- Janesville 10
- Kerman 10
- Lakewood 10
- Loma Rica 10
- Los Banos 10
- Mariposa 10
- Maxwell 10
- Montalvin 10
- Monte Sereno 10
- Monument Hills 10
- Morongo Valley 10
- Myrtletown 10
- North Richmond 10
- Oak Park 10
- Pine Hills 10
- Placerville 10
- Rancho Cucamonga 10
- Rancho Murieta 10
- Redondo Beach 10
- Rio Dell 10
- Riverside 10
- Rollingwood 10
- San Clemente 10
- San Diego 10
- Santa Ana 10
- Saranap 10
- Sleepy Hollow 10
- Tara Hills 10
- Vine Hill 10
- Waldon 10
- Warner Springs 10
- Winters 10
- Woodland 10
- Alta Sierra 9
- Amador 9
- Auburn 9
- Avalon 9
- Culver City 9
- Diamond Springs 9
- Dunnigan 9
- Felton 9
- Firebaugh 9
- Hartley 9
- La Habra Heights 9
- Lakeside 9
- Lathrop 9
- Lewiston 9
- Linden 9
- Manteca 9
- Morgan Hill 9
- North Auburn 9
- Phoenix Lake 9
- Quincy 9
- Running Springs 9
- San Juan Bautista 9
- Soquel 9
- Trabuco Canyon 9
- Willow Creek 9
- Yuba 9
- Allendale 8
- Aromas 8
- Arroyo Grande 8
- Atwater 8
- Boyes Hot Springs 8
- Buena Vista 8
- Calabasas 8
- Capitola 8
- Carlsbad 8
- Challenge-Brownsville 8
- Chino Hills 8
- Coarsegold 8
- Cool 8
- Corcoran 8
- Cupertino 8
- Davis 8
- Dunsmuir 8
- East Oakdale 8
- East Quincy 8
- El Verano 8
- Esparto 8
- Forest Meadows 8
- Goleta 8
- Hayfork 8
- Irvine 8
- Jamestown 8
- Klamath 8
- La Verne 8
- Lakeview 8
- Los Gatos 8
- Marysville 8
- Mono Vista 8
- Mount Shasta 8
- Murphys 8
- Oakley 8
- Oceanside 8
- Oildale 8
- Orosi 8
- Perris 8
- Rancho Santa Fe 8
- Rio Del Mar 8
- Rio Linda 8
- Roseland 8
- San Jose 8
- San Martin 8
- Sanger 8
- Shingletown 8
- Stonyford 8
- Twin Lakes 8
- Vista 8
- West Menlo Park 8
- Alpine 7
- Alum Rock 7
- Aptos 7
- Arbuckle 7
- Atascadero 7
- Ben Lomond 7
- Boulder Creek 7
- Campo 7
- Carmel Valley 7
- Carmichael 7
- Cobb 7
- Costa Mesa 7
- Covelo 7
- Cuyama 7
- Dana Point 7
- Deer Park 7
- Elk Grove 7
- Fetters Hot Springs-Agua Caliente 7
- Gilroy 7
- Guadalupe 7
- Happy Camp 7
- Hollister 7
- Johnstonville 7
- La Grange 7
- Lakeport 7
- Lincoln 7
- Lompoc 7
- Los Altos 7
- Loyola 7
- Lucerne 7
- Mammoth Lakes 7
- Montecito 7
- Nevada City 7
- North Tustin 7
- Pollock Pines 7
- Poway 7
- Redding 7
- Redwood Valley 7
- Reedley 7
- Saint Helena 7
- San Joaquin Hills 7
- San Luis Obispo 7
- Santa Clara 7
- Santa Cruz 7
- Santa Ynez 7
- Saratoga 7
- Stockton 7
- Strawberry 7
- Sunnyvale 7
- Sutter Creek 7
- Wasco 7
- Yorba Linda 7
- Yountville 7
- Anderson 6
- Angels Camp 6
- Bay Point 6
- Brooktrails 6
- Calaveras 6
- Calistoga 6
- Clear Lake Riviera 6
- Clearlake Oaks 6
- Concord 6
- Cottonwood 6
- Day Valley 6
- Discovery Bay 6
- Dixon 6
- Durham 6
- East Palo Alto 6
- Elverta 6
- Escondido 6
- Fairfield 6
- Fremont 6
- Galt 6
- Gold River 6
- Greenfield 6
- Hemet 6
- Huntington Beach 6
- Ione 6
- Jackson 6
- June Lake 6
- Kelseyville 6
- Laguna Niguel 6
- Lemon Grove 6
- Loomis 6
- Marina 6
- Milpitas 6
- Mission Viejo 6
- Montague 6
- Monterey 6
- Mountain House 6
- Mountain View 6
- Napa 6
- Newport Beach 6
- Nice 6
- Oakdale 6
- Palo Cedro 6
- Paso Robles 6
- Penn Valley 6
- Pismo Beach 6
- Prather 6
- Ripon 6
- Riverdale 6
- Sacramento 6
- San Lorenzo 6
- Shasta Lake 6
- Shingle Springs 6
- Soda Bay 6
- Solvang 6
- Sunnyside-Tahoe City 6
- Tahoe Vista 6
- Tahoma 6
- Tulare 6
- Tustin 6
- Twain Harte 6
- Vacaville 6
- Windsor 6
- Alamo 5
- Albany 5
- Alturas 5
- Antioch 5
- Arden-Arcade 5
- Arnold 5
- Beale Air Force Base 5
- Benicia 5
- Brentwood 5
- Carmel-by-the-Sea 5
- Carnelian Bay 5
- Chester 5
- Chico 5
- Citrus Heights 5
- Clearlake 5
- Cloverdale 5
- Colfax 5
- Columbia 5
- Contra Costa Centre 5
- Copperopolis 5
- Danville 5
- Dublin 5
- Eastvale 5
- El Cerrito 5
- El Granada 5
- Glenn 5
- Healdsburg 5
- Hydesville 5
- Kenwood 5
- Lafayette 5
- Laguna Beach 5
- Larkfield-Wikiup 5
- Lee Vining 5
- Lodi 5
- Los Altos Hills 5
- Menlo Park 5
- Middletown 5
- Moraga 5
- Murrieta 5
- Newark 5
- Oroville 5
- Palermo 5
- Palo Alto 5
- Parlier 5
- Pioneer 5
- Pleasant Hill 5
- Ramona 5
- Rancho Cordova 5
- Rocklin 5
- Roseville 5
- Salinas 5
- San Jacinto 5
- San Ramon 5
- Santa Rosa 5
- Scotts Valley 5
- Seaside 5
- Shasta 5
- Stevenson Ranch 5
- Temecula 5
- Ukiah 5
- Union City 5
- Upper Lake 5
- Vandenberg Village 5
- Walnut Creek 5
- Wheatland 5
- Yolo 5
- Alameda 4
- Atherton 4
- Buckhorn 4
- Buellton 4
- Cameron Park 4
- Chowchilla 4
- Clayton 4
- Del Monte Forest 4
- Del Rey Oaks 4
- El Dorado 4
- El Dorado Hills 4
- El Sobrante 4
- Elkhorn 4
- Eureka 4
- Fair Oaks 4
- Folsom 4
- Forestville 4
- Granite Bay 4
- Hayward 4
- Hidden Valley Lake 4
- Hornbrook 4
- Hughson 4
- Kensington 4
- La Jolla 4
- Lake Forest 4
- Larkspur 4
- Livermore 4
- Los Molinos 4
- Los Osos 4
- Midpines 4
- Mill Valley 4
- Montara 4
- Newcastle 4
- North Fair Oaks 4
- Oakland 4
- Orangevale 4
- Pacific Grove 4
- Pacifica 4
- Paicines 4
- Piedmont 4
- Pinole 4
- Pleasanton 4
- Port Hueneme 4
- Potter Valley 4
- Rancho Calaveras 4
- Redwood City 4
- San Juan Capistrano 4
- San Leandro 4
- Santa Maria 4
- Solana Beach 4
- Soledad 4
- Sonoma 4
- South Lake Tahoe 4
- Stanford 4
- Talmage 4
- Trinity 4
- Vallejo 4
- Valley Center 4
- Watsonville 4
- Williams 4
- Willits 4
- Yreka 4
- Ahwahnee 3
- Angwin 3
- Belmont 3
- Belvedere 3
- Berkeley 3
- Black Point-Green Point 3
- Brea 3
- Burbank 3
- Burlingame 3
- Cambria 3
- Castro Valley 3
- Corte Madera 3
- El Monte 3
- Eldridge 3
- Fairview 3
- Fortuna 3
- Foster City 3
- Gasquet 3
- Graton 3
- Half Moon Bay 3
- Highlands-Baywood Park 3
- Hillsborough 3
- Kings Beach 3
- La Riviera 3
- La Selva Beach 3
- Laguna Woods 3
- Lagunitas-Forest Knolls 3
- Lake Wildwood 3
- Laytonville 3
- Lexington Hills 3
- Lucas Valley-Marinwood 3
- Martinez 3
- Millbrae 3
- Monte Rio 3
- Orinda 3
- Pacheco 3
- Point Arena 3
- Portola 3
- Redway 3
- Richmond 3
- Rohnert Park 3
- Ross 3
- San Carlos 3
- San Marcos 3
- San Mateo 3
- Santa Venetia 3
- Sausalito 3
- Sebastopol 3
- Susanville 3
- Tiburon 3
- Tulelake 3
- Weed 3
- West Sacramento 3
- Westwood 3
- Woodacre 3
- Woodbridge 3
- Woodside 3
- American Canyon 2
- Blue Lake 2
- Brisbane 2
- Broadmoor 2
- Brookdale 2
- Corning 2
- Crockett 2
- Diablo 2
- Dollar Point 2
- Downieville 2
- East Richmond Heights 2
- Emeryville 2
- Fairfax 2
- Ferndale 2
- Fort Bragg 2
- Graeagle 2
- Humboldt 2
- Kentfield 2
- Marin 2
- Marin City 2
- Mission Canyon 2
- Novato 2
- Penngrove 2
- Petaluma 2
- Pittsburg 2
- Placer 2
- Plumas 2
- Plymouth 2
- Portola Valley 2
- Rosemead 2
- San Anselmo 2
- San Bruno 2
- San Rafael 2
- Sea Ranch 2
- Siskiyou 2
- South San Francisco 2
- Suisun 2
- Truckee 2
- Weaverville 2
- Westhaven-Moonstone 2
- Wilton 2
- Arcata 1
- Avila Beach 1
- Bayside 1
- Boonville 1
- Ceres 1
- Cotati 1
- Crescent City 1
- Daly City 1
- Emerald Lake Hills 1
- Greenville 1
- Gualala 1
- Ladera 1
- Lake San Marcos 1
- Live Oak 1
- Lower Lake 1
- Loyalton 1
- McKinleyville 1
- Mendocino 1
- Mission District 1
- Moss Beach 1
- Nashville 1
- Noe Valley 1
- North Lakeport 1
- Occidental 1
- Olympic Valley 1
- Prunedale 1
- Quartz Hill 1
- San Miguel 1
- Scotia 1
- Sierra 1
- South Oroville 1
- Tahoe City 1
- Tamalpais-Homestead Valley 1
- Temelec 1
- Templeton 1
- Yosemite Lakes 1
- Bolinas 0
- Byron 0
- Hercules 0
- Inverness 0
- Kirkwood 0
- Laguna 0
- Mono 0
- Nevada County 0
- Rodeo 0
- Solano 0
- Tamalpais Valley 0
AQI US, Metric