Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
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 | 141 |
| 2 | Mecca | 93 |
| 3 | Imperial | 84 |
| 4 | Indio | 78 |
| 5 | Coachella | 69 |
| 6 | Terra Bella | 65 |
| 7 | Tahoe City | 62 |
| 8 | Yosemite Np Turtleback Dome | 62 |
| 9 | Bass Lake | 61 |
| 10 | Fetters Hot Springs-Agua Caliente | 61 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
5654 Contributors
See all
LIVE AQI CITY RANKING
Real-time California
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Solano | 0 |
| 2 | Cuyama | 1 |
| 3 | El Monte | 1 |
| 4 | Laguna Woods | 1 |
| 5 | Quartz Hill | 1 |
| 6 | Stevenson Ranch | 1 |
| 7 | Acalanes Ridge | 2 |
| 8 | Lake San Marcos | 2 |
| 9 | Mono | 3 |
| 10 | Prunedale | 3 |
(local time)
SEE WORLD AQI RANKING
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
5654Contributors
- California Air Resources Board (CARB)
229 stations
- Spare the Air - Sacramento Region
13 stations
+logo.png)
NASA Jet Propulsion Laboratory (JPL)1 station
USA National Park Service23 stations
+banner.jpg)
El Dorado County Air Quality Management District11 stations
Palo Alto OES1 station
20 Government Contributors
Coalition for Clean Air (CCA)248 stations
Climate First: Replacing Oil and Gas (CFROG)3 stations
ActiveSGV - Active San Gabriel Valley1 station
- Safer Together San Francisco
1 station
5 Non-profit organization Contributors
- Oakland Unified School District
9 stations
- Coachella Valley Unified School District
9 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
- 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
14 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
- 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
- Jen & Jason Van Dinter
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
- chono
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
- 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
5434 Anonymous contributors5434 stations
5434 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 141
- Mecca 93
- Imperial 84
- Indio 78
- Calipatria 75
- Coachella 69
- Terra Bella 65
- Del Rey 62
- Tahoe City 62
- Yosemite Np Turtleback Dome 62
- Bass Lake 61
- Fetters Hot Springs-Agua Caliente 61
- Florin 61
- Jamestown 58
- Porterville 57
- Brawley 56
- Corcoran 55
- Tuolumne 55
- Hanford 54
- Madera 54
- Springville 54
- Easton 53
- Shafter 53
- Visalia 53
- Delano 52
- Rancho Tehama Reserve 52
- Paramount 51
- Exeter 49
- Olympic Valley 49
- Dinuba 48
- Tranquillity 46
- Westmorland 46
- Lebec 45
- Arnold 44
- Sonora 44
- Cobb 43
- Cutler 43
- Dollar Point 43
- Shaver Lake 43
- Pine Grove 42
- La Jolla 41
- San Andreas 41
- Tuolumne City 41
- Bella Vista 40
- Searles Valley 40
- Buckhorn 39
- Camino 39
- Claremont 39
- Oildale 39
- Yucaipa 39
- Yucca Valley 39
- Golden Hills 38
- Twain Harte 38
- Burney 37
- Coarsegold 37
- Kerman 37
- Kirkwood 37
- Modesto 37
- Oceano 37
- Orosi 37
- Red Bluff 37
- San Pablo 37
- Tulare 37
- Kern 36
- Mojave 36
- Nevada County 36
- Portola 36
- Turlock 36
- Bakersfield 35
- Calaveras 35
- North Fork 35
- Oak Hills 35
- Trona 35
- Willows 35
- Banning 34
- Columbia 34
- Graeagle 34
- Mesa Verde 34
- Mono Vista 34
- Murphys 34
- Rainbow 34
- Camp Pendleton South 33
- Carnelian Bay 33
- Cathedral City 33
- Desert Shores 33
- Dirty Socks 33
- Lake Arrowhead 33
- Niland 33
- Oasis 33
- Phoenix Lake 33
- Pioneer 33
- Sutter 33
- Tahoma 33
- Winchester 33
- Yosemite Valley 33
- Arvin 32
- Crestline 32
- Fresno 32
- Heber 32
- Holtville 32
- Morro Bay 32
- Newhall 32
- Riverdale 32
- Strawberry 32
- Vista Santa Rosa 32
- Angels Camp 31
- Big River 31
- Indian Wells 31
- La Grange 31
- San Benito 31
- South Lake Tahoe 31
- Three Rivers 31
- Bermuda Dunes 30
- Farmersville 30
- Glen Avon 30
- Glendora 30
- Huron 30
- Ivanhoe 30
- Lindsay 30
- Maricopa 30
- Merced 30
- North Hollywood 30
- Oakhurst 30
- Paicines 30
- Parlier 30
- Patterson Tract 30
- Rancho Mirage 30
- Reseda 30
- Strathmore 30
- Thousand Palms 30
- Truckee 30
- Woodlake 30
- Alpaugh 29
- Clovis 29
- Earlimart 29
- East Porterville 29
- Goshen 29
- Kernville 29
- Los Angeles 29
- Matheny 29
- Orange Cove 29
- Pico Rivera 29
- Pixley 29
- Placer 29
- Pollock Pines 29
- Poplar-Cotton Center 29
- Seeley 29
- Shandon 29
- Teviston 29
- Tipton 29
- Venice 29
- Victorville 29
- Woodville 29
- Barstow 28
- Home Garden 28
- Kettleman City 28
- Kings Beach 28
- Lemoore 28
- London 28
- Lost Hills 28
- Mariposa 28
- Miramonte 28
- Orange 28
- Sequoia National Park 28
- Squaw Valley 28
- Stratford 28
- Tahoe Vista 28
- Westwood 28
- Wrightwood 28
- Armona 27
- Camp Nelson 27
- Chowchilla 27
- Coalinga 27
- Desert Edge 27
- Downieville 27
- Hesperia 27
- Inyokern 27
- Joshua Tree 27
- Kingsburg 27
- Laton 27
- Lemoore Station 27
- Minkler 27
- Pinon Hills 27
- Prather 27
- Richgrove 27
- Running Springs 27
- Alpine 26
- Apple Valley 26
- Auberry 26
- Avenal 26
- Barstow Heights 26
- Caruthers 26
- Chester 26
- Cottonwood 26
- Desert Hot Springs 26
- Foresthill 26
- Fowler 26
- Garnet 26
- Hume 26
- Lenwood 26
- Los Molinos 26
- Loyalton 26
- McFarland 26
- Redding 26
- Selma 26
- Wofford Heights 26
- Adelanto 25
- Anza 25
- Biola 25
- Blythe 25
- Bonadelle Ranchos-Madera Ranchos 25
- Copperopolis 25
- El Centro 25
- Georgetown 25
- Kelso 25
- Madera Acres 25
- Mammoth Lakes 25
- Mountain View Acres 25
- Old Fig Garden 25
- Palo Cedro 25
- Paradise 25
- Parksdale 25
- Parkwood 25
- Quincy 25
- Rialto 25
- San Joaquin 25
- Spring Valley Lake 25
- Sunnyside 25
- Tarpey Village 25
- West Park 25
- Anderson 24
- Big Bear City 24
- Boron 24
- Cabazon 24
- Cherry Valley 24
- Fairmead 24
- Idyllwild 24
- Lake Isabella 24
- Le Grand 24
- Planada 24
- Ridgecrest 24
- Salton City 24
- Shasta 24
- Tracy 24
- Yuba 24
- East Sonora 23
- Leona Valley 23
- Macdoel 23
- Mentone 23
- Muscoy 23
- Nevada City 23
- North Edwards 23
- Phelan 23
- Soulsbyville 23
- Winton 23
- Biggs 22
- Buttonwillow 22
- Caspar 22
- Chico 22
- China Lake Acres 22
- Colfax 22
- Denair 22
- Empire 22
- Fort Irwin 22
- Gerber 22
- Hollywood 22
- Koreatown 22
- Lake Los Angeles 22
- Lancaster 22
- Lucerne Valley 22
- Placerville 22
- Plumas 22
- Riverbank 22
- Shasta Lake 22
- Susanville 22
- Tehama 22
- Waterford 22
- Alta Sierra 21
- Beaumont 21
- Bystrom 21
- Cedar Ridge 21
- Central Valley (historical) 21
- Del Rio 21
- Delhi 21
- Edwards Air Force Base 21
- Fort Bragg 21
- Grand Terrace 21
- Guerneville 21
- Julian 21
- Keyes 21
- La Mesa 21
- Lewiston 21
- Littlerock 21
- Livingston 21
- McCloud 21
- Olancha 21
- Orland 21
- Rosedale 21
- Sierra 21
- Twentynine Palms 21
- Bret Harte 20
- Durham 20
- El Segundo 20
- Fort Jones 20
- Grass Valley 20
- Greenacres 20
- Happy Camp 20
- Lakehead-Lakeshore 20
- Lamont 20
- Mountain Ranch 20
- Needles 20
- Ontario 20
- Palmdale 20
- Patterson 20
- Pine Mountain Club 20
- Red Corral 20
- Salida 20
- San Antonio Heights 20
- Shackelford 20
- Stallion Springs 20
- Stanislaus 20
- Sun Village 20
- Valle Vista 20
- Valley Springs 20
- Weedpatch 20
- Weldon 20
- Acton 19
- Auburn Lake Trails 19
- Berry Creek 19
- Boyle Heights 19
- Bridgeport 19
- Butte 19
- California City 19
- Desert View Highlands 19
- Dos Palos 19
- East Hemet 19
- East Oakdale 19
- Fillmore 19
- Forest Meadows 19
- Forest Ranch 19
- Glenn 19
- Gridley 19
- Hamilton City 19
- Highgrove 19
- Hilmar-Irwin 19
- Jurupa Valley 19
- Ladera Ranch 19
- Lake of the Pines 19
- Linda 19
- Magalia 19
- March Air Force Base 19
- Maywood 19
- Montague 19
- Montclair 19
- Olivehurst 19
- Rio Vista 19
- Riverdale Park 19
- Rubidoux 19
- San Fernando 19
- Shadow Hills 19
- Silver Lakes 19
- Sky Valley 19
- South Yuba City 19
- Sunnyslope 19
- Tehachapi 19
- Thermalito 19
- Tierra Buena 19
- Tujunga 19
- Weed 19
- West Modesto 19
- Westlake Village 19
- Yreka 19
- Aguanga 18
- Amador 18
- Antelope 18
- August 18
- Azusa 18
- Bodega Bay 18
- Calexico 18
- Canoga Park 18
- Carson 18
- Challenge-Brownsville 18
- Charter Oak 18
- Chino 18
- Citrus 18
- Clay 18
- Collierville 18
- Corning 18
- Covina 18
- Descanso 18
- Diamond Springs 18
- Dogtown 18
- East Quincy 18
- Foothill Farms 18
- French Camp 18
- Garden Acres 18
- Green Acres 18
- Gustine 18
- Hayfork 18
- Herald 18
- Homeland 18
- Kennedy 18
- King City 18
- Lockeford 18
- Los Serranos 18
- Maxwell 18
- Morada 18
- Norco 18
- North Highlands 18
- Nuevo 18
- Oroville 18
- Palm Springs 18
- Pedley 18
- Pine Valley 18
- Rosemont 18
- Rough and Ready 18
- San Dimas 18
- Sheridan 18
- Silver Lake 18
- South Dos Palos 18
- Studio City 18
- Sunnyside-Tahoe City 18
- Taft Mosswood 18
- Van Nuys 18
- Vincent 18
- Vineyard 18
- Wheatland 18
- Woodcrest 18
- Agua Dulce 17
- Alum Rock 17
- Bill Stanley 17
- Bodfish 17
- Bradbury 17
- Cayucos 17
- Colusa 17
- Country Club 17
- El Cerrito Corona 17
- Encino 17
- Good Hope 17
- Greenville 17
- Highland 17
- Home Gardens 17
- Huntington Park 17
- Irwindale 17
- Johnstonville 17
- La Jolla Shores 17
- La Puente 17
- La Quinta 17
- Lincoln Village 17
- Lodi 17
- Lomita 17
- Lone Pine 17
- Mayflower Village 17
- Menifee 17
- Newman 17
- Orcutt 17
- Rancho Murieta 17
- Rancho Penasquitos 17
- Riverside 17
- Romoland 17
- Rowland Heights 17
- San Diego Country Estates 17
- Sherman Oaks 17
- South Oroville 17
- South San Jose Hills 17
- Stonyford 17
- Summerland 17
- Thornton 17
- Valinda 17
- Walnut 17
- Walnut Grove 17
- West Puente Valley 17
- Willowbrook 17
- Alturas 16
- Atwater 16
- Auburn 16
- Avocado Heights 16
- Big Bear Lake 16
- Bishop 16
- Calimesa 16
- Callender 16
- Canyon Lake 16
- Coleville 16
- Deer Park 16
- East La Mirada 16
- East Pasadena 16
- East San Gabriel 16
- Ford City 16
- Frazier Park 16
- Gardena 16
- Green Valley 16
- Grover Beach 16
- Inyo 16
- Janesville 16
- June Lake 16
- Loma Rica 16
- Manteca 16
- Mead Valley 16
- Meadowbrook 16
- Mendota 16
- Murrieta Hot Springs 16
- North Auburn 16
- North El Monte 16
- Oakdale 16
- Oxnard 16
- Parkway 16
- Placentia 16
- Portola Hills 16
- Quail Valley 16
- San Pasqual 16
- Shingle Springs 16
- Shingletown 16
- South El Monte 16
- Sun City 16
- Temple City 16
- Trinity 16
- Vandenberg Air Force Base 16
- Villa Park 16
- Warner Springs 16
- Weaverville 16
- West Hills 16
- Woodland Hills 16
- Ahwahnee 15
- Arroyo Grande 15
- Bear Valley Springs 15
- Ben Lomond 15
- Blue Lake 15
- Bostonia 15
- Buena Vista 15
- Cameron Park 15
- Casa de Oro-Mount Helix 15
- Chatsworth 15
- Citrus Heights 15
- Cool 15
- Crest 15
- Dixon Lane-Meadow Creek 15
- El Dorado 15
- Eucalyptus Hills 15
- Fairbanks Ranch 15
- Foothill Ranch 15
- Garden Grove 15
- Granite Hills 15
- Harbison Canyon 15
- Hidden Meadows 15
- Idyllwild-Pine Cove 15
- Lakeland Village 15
- Lathrop 15
- Loma Linda 15
- Meadow Vista 15
- Midpines 15
- Mira Mesa 15
- Mission Hills 15
- Montebello 15
- Morongo Valley 15
- Mount Shasta 15
- National City 15
- Penn Valley 15
- Rancho Santa Margarita 15
- Redlands 15
- Rosamond 15
- San Bernardino 15
- San Marino 15
- Santa Fe Springs 15
- Sedco Hills 15
- Sorrento Valley 15
- South Gate 15
- South San Gabriel 15
- South Taft 15
- South Whittier 15
- Sunland 15
- Taft Heights 15
- Universal City 15
- West Whittier-Los Nietos 15
- Wildomar 15
- Winter Gardens 15
- Yuba City 15
- Artesia 14
- Bell Gardens 14
- Bellflower 14
- Bertsch-Oceanview 14
- Bloomington 14
- Bonsall 14
- Borrego Springs 14
- Broadmoor 14
- Camp Meeker 14
- Camp Pendleton North 14
- Century City 14
- Cerritos 14
- Chula Vista 14
- Colma 14
- Commerce 14
- Coto De Caza 14
- Cypress 14
- Discovery Bay 14
- Dunnigan 14
- East Los Angeles 14
- East Rancho Dominguez 14
- Echo Park 14
- El Cajon 14
- Firebaugh 14
- Florence-Graham 14
- Glendale 14
- Hacienda Heights 14
- Hawaiian Gardens 14
- Hidden Hills 14
- Hughson 14
- Imperial Beach 14
- Ione 14
- Jackson 14
- Jamul 14
- Kelseyville 14
- La Habra 14
- La Palma 14
- La Presa 14
- Ladera Heights 14
- Laguna Hills 14
- Lake Nacimiento 14
- Lakeport 14
- Lennox 14
- Lincoln 14
- Los Alamitos 14
- Lucas Valley-Marinwood 14
- Lynwood 14
- Midway City 14
- Mount Hermon 14
- North Hills 14
- Northridge 14
- Pasatiempo 14
- Piru 14
- Plumas Lake 14
- Rancho San Diego 14
- Redwood Valley 14
- Rocklin 14
- Rossmoor 14
- Santa Susana 14
- Santa Venetia 14
- Sea Ranch 14
- Sierra Madre 14
- Stanton 14
- Stockton 14
- Tulelake 14
- Walnut Park 14
- West Athens 14
- West Bishop 14
- West Hollywood 14
- West Menlo Park 14
- West Rancho Dominguez 14
- Westminster 14
- Westmont 14
- Willow Creek 14
- Agoura 13
- Allendale 13
- Alondra Park 13
- Amesti 13
- Aptos Hills-Larkin Valley 13
- Arcadia 13
- Bayview 13
- Bethel Island 13
- Big Pine 13
- Boronda 13
- Brentwood 13
- Brooktrails 13
- Cambrian Park 13
- Carmel Valley Village 13
- Carmichael 13
- Castroville 13
- Channel Islands Beach 13
- Chualar 13
- Clear Lake Riviera 13
- Clearlake Oaks 13
- Corona 13
- Cudahy 13
- Cutten 13
- Del Aire 13
- El Rio 13
- Elverta 13
- Encinitas 13
- Esparto 13
- Fortuna 13
- Fountain Valley 13
- Gonzales 13
- Gualala 13
- Hartley 13
- Healdsburg 13
- Humboldt Hill 13
- Interlaken 13
- Keeler 13
- Knightsen 13
- La Crescenta-Montrose 13
- Las Flores 13
- Las Lomas 13
- Lawndale 13
- Lompico 13
- Los Alamos 13
- Los Banos 13
- Loyola 13
- Lucerne 13
- Marysville 13
- Meiners Oaks 13
- Mira Monte 13
- Monrovia 13
- Monte Rio 13
- Monument Hills 13
- Nice 13
- Norwalk 13
- Opal Cliffs 13
- Orleans 13
- Pajaro 13
- Palermo 13
- Palos Verdes Estates 13
- Pine Hills 13
- Reedley 13
- Ridgemark 13
- Rolling Hills 13
- Roseland 13
- San Gabriel 13
- San Pedro 13
- Saticoy 13
- Seacliff 13
- Seven Trees 13
- Siskiyou 13
- Sisquoc 13
- Sleepy Hollow 13
- Soda Bay 13
- Thermal 13
- Toro Canyon 13
- Trabuco Canyon 13
- Upper Lake 13
- Visitacion Valley 13
- Windsor 13
- Winters 13
- Altadena 12
- Antioch 12
- Aromas 12
- Ashland 12
- Boulder Creek 12
- Boyes Hot Springs 12
- Buena Park 12
- Calistoga 12
- Campbell 12
- Cherryland 12
- Cloverdale 12
- East Foothills 12
- El Verano 12
- Elk Grove 12
- Emeryville 12
- Escalon 12
- Felton 12
- Forestville 12
- Gold River 12
- Granite Bay 12
- Graton 12
- Hidden Valley Lake 12
- Kenwood 12
- Klamath 12
- Lee Vining 12
- Linden 12
- Long Beach 12
- Loomis 12
- Middletown 12
- Montalvin 12
- Mountain House 12
- Myrtletown 12
- Newcastle 12
- Noe Valley 12
- North Richmond 12
- Novato 12
- Oak View 12
- Oakley 12
- Pacifica 12
- Pasadena 12
- Petaluma 12
- Pinole 12
- Potter Valley 12
- Rancho Cordova 12
- Redwood Shores 12
- Rio Dell 12
- Ripon 12
- Rohnert Park 12
- Rollingwood 12
- Roseville 12
- Ross 12
- Saint Helena 12
- San Rafael 12
- Santa Rosa 12
- Saranap 12
- South San Francisco 12
- Sutter Creek 12
- Talmage 12
- Tara Hills 12
- Temelec 12
- Ukiah 12
- Val Verde 12
- Vandenberg Village 12
- Vine Hill 12
- Waldon 12
- Williams 12
- Woodland 12
- Alhambra 11
- American Canyon 11
- Atascadero 11
- Beale Air Force Base 11
- Benicia 11
- Blackhawk 11
- Bolinas 11
- Bonita 11
- Brisbane 11
- Brookdale 11
- Campo 11
- Carlsbad 11
- Castaic 11
- Chino Hills 11
- Colton 11
- Compton 11
- Concord 11
- Covelo 11
- Crockett 11
- Cupertino 11
- Daly City 11
- Danville 11
- Davis 11
- Diamond Bar 11
- Downey 11
- Duarte 11
- Dunsmuir 11
- East Palo Alto 11
- El Dorado Hills 11
- Fair Oaks 11
- Fallbrook 11
- Folsom 11
- Fontana 11
- Freedom 11
- Humboldt 11
- Hydesville 11
- Inglewood 11
- La Canada Flintridge 11
- Lagunitas-Forest Knolls 11
- Lake Elsinore 11
- Lakeview 11
- Laytonville 11
- Los Altos 11
- Los Olivos 11
- Mendocino 11
- Monte Sereno 11
- Morgan Hill 11
- Mountain View 11
- North Fair Oaks 11
- Ojai 11
- Plymouth 11
- Sacramento 11
- San Anselmo 11
- San Francisco 11
- San Jacinto 11
- San Jose 11
- San Luis Obispo 11
- Santa Ana 11
- Santa Clarita 11
- Santee 11
- Sebastopol 11
- Signal Hill 11
- Sonoma 11
- Sunnyvale 11
- Taft 11
- Vallejo 11
- Vista 11
- West Covina 11
- Woodacre 11
- Yorba Linda 11
- Yountville 11
- Alameda 10
- Albany 10
- Arden-Arcade 10
- Atherton 10
- Baldwin Park 10
- Bay Point 10
- Bell 10
- Berkeley 10
- Burlingame 10
- Cambria 10
- Casa Conejo 10
- Clayton 10
- Davenport 10
- El Granada 10
- Fairfax 10
- Fremont 10
- Fruitridge Pocket 10
- Fullerton 10
- Galt 10
- Gilroy 10
- Guadalupe 10
- Hollister 10
- Hornbrook 10
- Inverness 10
- Isla Vista 10
- Kentfield 10
- La Mirada 10
- La Riviera 10
- Lake Wildwood 10
- Lakewood 10
- Larkfield-Wikiup 10
- Los Gatos 10
- Malibu 10
- Marin City 10
- Marina del Rey 10
- Monterey Park 10
- Moraga 10
- Napa 10
- Newark 10
- Nipomo 10
- North Tustin 10
- Oakland 10
- Occidental 10
- Orangevale 10
- Oroville East 10
- Palo Alto 10
- Penngrove 10
- Pismo Beach 10
- Pleasanton 10
- Ramona 10
- Rancho Palos Verdes 10
- Redway 10
- Redwood City 10
- Richmond 10
- Rio Linda 10
- Rodeo 10
- San Bruno 10
- San Martin 10
- Santa Barbara 10
- Santa Clara 10
- Saratoga 10
- Seal Beach 10
- Solvang 10
- Soquel 10
- South Pasadena 10
- Spring Valley 10
- Tamalpais-Homestead Valley 10
- Tamalpais Valley 10
- Thousand Oaks 10
- Upland 10
- View Park-Windsor Hills 10
- West Carson 10
- Whittier 10
- Willits 10
- Alamo 9
- Aliso Viejo 9
- Belvedere 9
- Beverly Hills 9
- Black Point-Green Point 9
- Byron 9
- Calabasas 9
- Camarillo 9
- Ceres 9
- Clearlake 9
- Contra Costa Centre 9
- Corralitos 9
- Corte Madera 9
- Dana Point 9
- Dublin 9
- East Richmond Heights 9
- El Cerrito 9
- Greenfield 9
- Half Moon Bay 9
- Hemet 9
- Larkspur 9
- Livermore 9
- Lompoc 9
- Los Altos Hills 9
- Los Osos 9
- Manhattan Beach 9
- Menlo Park 9
- Mill Valley 9
- Milpitas 9
- Mission District 9
- Montara 9
- Moreno Valley 9
- Perris 9
- Piedmont 9
- Pleasant Hill 9
- Pomona 9
- Port Hueneme 9
- Portola Valley 9
- Rancho Cucamonga 9
- San Juan Bautista 9
- San Ramon 9
- Sanger 9
- Santa Cruz 9
- Santa Paula 9
- Sausalito 9
- Tiburon 9
- Union City 9
- Valencia 9
- Valley Center 9
- Ventura 9
- Walnut Creek 9
- Woodbridge 9
- Agoura Hills 8
- Anaheim 8
- Aptos 8
- Arbuckle 8
- Belmont 8
- Boonville 8
- Burbank 8
- Carpinteria 8
- Coronado 8
- Costa Mesa 8
- Culver City 8
- Del Monte Forest 8
- Dixon 8
- El Sobrante 8
- Emerald Lake Hills 8
- Escondido 8
- Eureka 8
- Foster City 8
- Gasquet 8
- Goleta 8
- Hawthorne 8
- Hayward 8
- Hermosa Beach 8
- Hoopa 8
- Irvine 8
- Kensington 8
- Lafayette 8
- Lake Forest 8
- Martinez 8
- McKinleyville 8
- Millbrae 8
- Mission Viejo 8
- Monterey 8
- Oceanside 8
- Paso Robles 8
- Pittsburg 8
- Point Arena 8
- Poway 8
- Rio Del Mar 8
- San Carlos 8
- San Leandro 8
- San Mateo 8
- San Miguel 8
- Santa Monica 8
- Scotts Valley 8
- Temecula 8
- Topanga 8
- Torrance 8
- Tustin 8
- Vacaville 8
- Yolo 8
- Angwin 7
- Avalon 7
- Bonny Doon 7
- Carmel-by-the-Sea 7
- Carmel Valley 7
- Castro Valley 7
- Cotati 7
- Day Valley 7
- Diablo 7
- Eastvale 7
- Eldridge 7
- Fairfield 7
- Fairview 7
- Ferndale 7
- Hercules 7
- Highlands-Baywood Park 7
- Hillsborough 7
- Ladera 7
- Lakeside 7
- Lexington Hills 7
- Marin 7
- Mission Canyon 7
- Moorpark 7
- Oak Park 7
- Orinda 7
- Pacheco 7
- Rancho Calaveras 7
- Redondo Beach 7
- Salinas 7
- San Diego 7
- Santa Margarita 7
- Santa Maria 7
- Santa Ynez 7
- Simi Valley 7
- Stanford 7
- Suisun 7
- Twin Lakes 7
- West Sacramento 7
- Wilton 7
- Woodside 7
- Bayside 6
- Buellton 6
- Del Mar 6
- La Habra Heights 6
- La Verne 6
- Laguna Beach 6
- Marina 6
- Murrieta 6
- Newport Beach 6
- Rancho Santa Fe 6
- San Clemente 6
- San Joaquin Hills 6
- San Lorenzo 6
- Wasco 6
- Arcata 5
- Brea 5
- Del Rey Oaks 5
- Huntington Beach 5
- La Selva Beach 5
- Laguna Niguel 5
- Lemon Grove 5
- Moss Beach 5
- Nashville 5
- North Lakeport 5
- Rolling Hills Estates 5
- Rosemead 5
- San Juan Capistrano 5
- Scotia 5
- Seaside 5
- Soledad 5
- Westhaven-Moonstone 5
- Avila Beach 4
- Crescent City 4
- Elkhorn 4
- Laguna 4
- Live Oak 4
- Lower Lake 4
- Montecito 4
- Pacific Grove 4
- Solana Beach 4
- Watsonville 4
- Mono 3
- Prunedale 3
- San Marcos 3
- Templeton 3
- Acalanes Ridge 2
- Lake San Marcos 2
- Capitola 1
- Cuyama 1
- El Monte 1
- Laguna Woods 1
- Quartz Hill 1
- Stevenson Ranch 1
- Yosemite Lakes 1
- Solano 0
AQI US, Metric