SmogRank / Countries / United States / September 2024
Most polluted cities in United States, September 2024
632 cities in United States ranked by their average PM2.5 over the 30 days. Worst: Fontana at 19.8 µg/m³, #39 of 1,555 cities in the world. Cleanest: Santa Rosa at 2.0. A city needs measurements on 70% of the days to be ranked.
- 1FontanaCalifornia 19.8
- 2Jurupa ValleyCalifornia 17.8
- 3RiversideCalifornia 17.1
- 4BendOregon 17.0
- 5MeridianIdaho 15.5
- 5HelenaMontana 15.5
- 7GlendoraCalifornia 14.0
- 7ButteMontana 14.0
- 9RedmondOregon 13.8
- 10Los AngelesCalifornia 13.7
- 11VisaliaCalifornia 13.3
- 12BirminghamAlabama 12.8
- 12BoiseIdaho 12.8
- 14LewistonIdaho 12.7
- 15PortervilleCalifornia 12.6
- 15VictorvilleCalifornia 12.6
- 15MissoulaMontana 12.6
- 18NampaIdaho 12.5
- 18Twin FallsIdaho 12.5
- 20AnaheimCalifornia 12.3
- 21Carsonlow-cost sensorsCalifornia 12.2
- 22BismarckNorth Dakota 12.1
- 23BurbankCalifornia 12.0
- 23FresnoCalifornia 12.0
- 25Lake ElsinoreCalifornia 11.8
- 26ClovisCalifornia 11.7
- 27HanfordCalifornia 11.6
- 28LawrencevilleGeorgia 11.4
- 28CorcoranCalifornia 11.4
- 28Hawthornelow-cost sensorsCalifornia 11.4
- 28Inglewoodlow-cost sensorsCalifornia 11.4
- 32BanningCalifornia 11.3
- 32Santa ClaritaCalifornia 11.3
- 32La Crescenta-Montroselow-cost sensorsCalifornia 11.3
- 35Santa Monicalow-cost sensorsCalifornia 11.2
- 35MoscowIdaho 11.2
- 37BartlettTennessee 11.0
- 37ConroeTexas 11.0
- 37Agouralow-cost sensorsCalifornia 11.0
- 37BakersfieldCalifornia 11.0
- 37Torrancelow-cost sensorsCalifornia 11.0
- 37BozemanMontana 11.0
- 37MillcreekUtah 11.0
- 44Little RockArkansas 10.9
- 45West MemphisArkansas 10.8
- 45RedfordMichigan 10.8
- 47IndioCalifornia 10.7
- 47Lomitalow-cost sensorsCalifornia 10.7
- 49Chula VistaCalifornia 10.6
- 49ComptonCalifornia 10.6
- 51Columbialow-cost sensorsMissouri 10.5
- 52ShreveportLouisiana 10.4
- 53HernandoMississippi 10.3
- 53WatertownSouth Dakota 10.3
- 53El CajonCalifornia 10.3
- 53Great FallsMontana 10.3
- 57GainesvilleGeorgia 10.2
- 57Arden-ArcadeCalifornia 10.2
- 59Las VegasNevada 10.1
- 60Port ArthurTexas 10.0
- 60West FargoNorth Dakota 10.0
- 60Rapid CitySouth Dakota 10.0
- 60Salt Lake CityUtah 10.0
- 64HoustonTexas 9.9
- 64RichmondCalifornia 9.9
- 66DallasTexas 9.7
- 66HendersonNevada 9.7
- 66GilletteWyoming 9.7
- 69RochesterMinnesota 9.6
- 69YumaArizona 9.6
- 69PowayCalifornia 9.6
- 69TooeleUtah 9.6
- 73LafayetteLouisiana 9.5
- 73BerkeleyCalifornia 9.5
- 73San DiegoCalifornia 9.5
- 73OremUtah 9.5
- 77AtlantaGeorgia 9.4
- 77NogalesArizona 9.4
- 79WyomingMichigan 9.3
- 79West JordanUtah 9.3
- 79Summerlin SouthNevada 9.3
- 82BillingsMontana 9.1
- 83McAlesterOklahoma 9.0
- 83Santa BarbaraCalifornia 9.0
- 85Saint JosephMissouri 8.9
- 85OregonOhio 8.9
- 87El PasoTexas 8.8
- 88St. LouisMissouri 8.7
- 88Missouri CityTexas 8.7
- 88GaryIndiana 8.7
- 88BurnsvilleMinnesota 8.7
- 88MaderaCalifornia 8.7
- 88OceansideCalifornia 8.7
- 88Spanish ForkUtah 8.7
- 88West Valley CityUtah 8.7
- 88PullmanWashington 8.7
- 97AugustaGeorgia 8.6
- 97BrookfieldIllinois 8.6
- 97Boulder CityNevada 8.6
- 100HueytownAlabama 8.5
- 100ColumbusGeorgia 8.5
- 100ColumbusOhio 8.5
- 100MooreOklahoma 8.5
- 100ClevelandOhio 8.5
- 100BrawleyCalifornia 8.5
- 100Long BeachCalifornia 8.5
- 100MesquiteNevada 8.5
- 100PocatelloIdaho 8.5
- 109PasadenaTexas 8.4
- 109PortageIndiana 8.4
- 109Saint PaulMinnesota 8.4
- 109South Lake TahoeCalifornia 8.4
- 109MagnaUtah 8.4
- 114Baton RougeLouisiana 8.3
- 114ShakopeeMinnesota 8.3
- 114KenmoreNew York 8.3
- 114Spring ValleyNevada 8.3
- 118IndianapolisIndiana 8.2
- 118DerbyKansas 8.2
- 118DurhamNorth Carolina 8.2
- 118Oklahoma CityOklahoma 8.2
- 118WaterlooIowa 8.2
- 118ChicagoIllinois 8.2
- 118Casa GrandeArizona 8.2
- 118RexburgIdaho 8.2
- 118Candler-McAfeeGeorgia 8.2
- 127Phenix CityAlabama 8.1
- 127Franklin ParkIllinois 8.1
- 127DearbornMichigan 8.1
- 127HerrimanUtah 8.1
- 131PrichardAlabama 8.0
- 131TrussvilleAlabama 8.0
- 131Saint AndrewsSouth Carolina 8.0
- 131Bay CityMichigan 8.0
- 131OmahaNebraska 8.0
- 136Warner RobinsGeorgia 7.9
- 136TulsaOklahoma 7.9
- 136MissionTexas 7.9
- 136TexarkanaTexas 7.9
- 136MankatoMinnesota 7.9
- 136MinneapolisMinnesota 7.9
- 136HarrisburgPennsylvania 7.9
- 136MantecaCalifornia 7.9
- 136Simi ValleyCalifornia 7.9
- 136StocktonCalifornia 7.9
- 136EnterpriseNevada 7.9
- 136BountifulUtah 7.9
- 148MaconGeorgia 7.8
- 148TopekaKansas 7.8
- 148Fort WorthTexas 7.8
- 148CaryIllinois 7.8
- 148ElkhartIndiana 7.8
- 148HighlandUtah 7.8
- 148Columbia CityWashington 7.8
- 155ValdostaGeorgia 7.7
- 155East Saint LouisIllinois 7.7
- 155FlorenceSouth Carolina 7.7
- 155SpartanburgSouth Carolina 7.7
- 155NapervilleIllinois 7.7
- 155Saint CloudMinnesota 7.7
- 155ToledoOhio 7.7
- 162Kansas CityKansas 7.6
- 162BellevueNebraska 7.6
- 162BrookingsSouth Dakota 7.6
- 162Sioux FallsSouth Dakota 7.6
- 162MilwaukeeWisconsin 7.6
- 162El CentroCalifornia 7.6
- 162HollisterCalifornia 7.6
- 162AlbuquerqueNew Mexico 7.6
- 162MedfordOregon 7.6
- 162North OgdenUtah 7.6
- 162MidwayFlorida 7.6
- 173GadsdenAlabama 7.5
- 173OcalaFlorida 7.5
- 173CharlotteNorth Carolina 7.5
- 173MorrisvilleNorth Carolina 7.5
- 173CincinnatiOhio 7.5
- 173MasonOhio 7.5
- 173BaytownTexas 7.5
- 173Cedar RapidsIowa 7.5
- 173JolietIllinois 7.5
- 173HammondIndiana 7.5
- 173CalexicoCalifornia 7.5
- 173ModestoCalifornia 7.5
- 173San JoseCalifornia 7.5
- 173TurlockCalifornia 7.5
- 173HermistonOregon 7.5
- 173SpokaneWashington 7.5
- 189Ponte Vedra BeachFlorida 7.4
- 189KennesawGeorgia 7.4
- 189SavannahGeorgia 7.4
- 189HattiesburgMississippi 7.4
- 189MiddletownOhio 7.4
- 189East RidgeTennessee 7.4
- 189Calumet CityIllinois 7.4
- 189RockfordIllinois 7.4
- 189WaukeshaWisconsin 7.4
- 189Walla WallaWashington 7.4
- 199OlatheKansas 7.3
- 199HickoryNorth Carolina 7.3
- 199RaleighNorth Carolina 7.3
- 199North CharlestonSouth Carolina 7.3
- 199Oak LawnIllinois 7.3
- 199DetroitMichigan 7.3
- 199BlaineMinnesota 7.3
- 199Saint MichaelMinnesota 7.3
- 199AberdeenSouth Dakota 7.3
- 199SacramentoCalifornia 7.3
- 199WoodlandCalifornia 7.3
- 199PendletonOregon 7.3
- 199TigardOregon 7.3
- 199RentonWashington 7.3
- 199SunnysideWashington 7.3
- 214Winston-SalemNorth Carolina 7.2
- 214EdmondOklahoma 7.2
- 214AnkenyIowa 7.2
- 214East ChicagoIndiana 7.2
- 214Fort WayneIndiana 7.2
- 214Grand RapidsMichigan 7.2
- 214WestervilleOhio 7.2
- 214LebanonPennsylvania 7.2
- 214Thousand OaksCalifornia 7.2
- 214SocorroTexas 7.2
- 224FairhopeAlabama 7.1
- 224East LakeFlorida 7.1
- 224AthensGeorgia 7.1
- 224ChalmetteLouisiana 7.1
- 224SulphurLouisiana 7.1
- 224FayettevilleNorth Carolina 7.1
- 224GreensboroNorth Carolina 7.1
- 224Des PlainesIllinois 7.1
- 224NorthbrookIllinois 7.1
- 224DuluthMinnesota 7.1
- 224CantonOhio 7.1
- 224WarrenOhio 7.1
- 224SuperiorWisconsin 7.1
- 224Arvadalow-cost sensorsColorado 7.1
- 238BessemerAlabama 7.0
- 238AlbanyGeorgia 7.0
- 238NorwoodOhio 7.0
- 238HollandMichigan 7.0
- 238Apple ValleyMinnesota 7.0
- 238PhoenixArizona 7.0
- 238ThorntonColorado 7.0
- 238Dodge CityKansas 7.0
- 238Spanish SpringsNevada 7.0
- 238Coeur d'AleneIdaho 7.0
- 248McDonoughGeorgia 6.9
- 248JeffersonvilleIndiana 6.9
- 248JacksonMississippi 6.9
- 248JenksOklahoma 6.9
- 248GreenvilleSouth Carolina 6.9
- 248Live OakTexas 6.9
- 248Iowa CityIowa 6.9
- 248EwingNew Jersey 6.9
- 248PerrysburgOhio 6.9
- 248Yuba CityCalifornia 6.9
- 248Sunland ParkNew Mexico 6.9
- 248LongmontColorado 6.9
- 248EugeneOregon 6.9
- 261TallahasseeFlorida 6.8
- 261Terre HauteIndiana 6.8
- 261PhiladelphiaPennsylvania 6.8
- 261ChattanoogaTennessee 6.8
- 261AustinTexas 6.8
- 261BuffaloNew York 6.8
- 261OrcuttCalifornia 6.8
- 261AltamontOregon 6.8
- 261AuburnWashington 6.8
- 270VeniceFlorida 6.7
- 270GulfportMississippi 6.7
- 270PascagoulaMississippi 6.7
- 270LexingtonNorth Carolina 6.7
- 270CorsicanaTexas 6.7
- 270EdinburgTexas 6.7
- 270SteubenvilleOhio 6.7
- 270BensalemPennsylvania 6.7
- 270FillmoreCalifornia 6.7
- 270UkiahCalifornia 6.7
- 270GreeleyColorado 6.7
- 270SheridanWyoming 6.7
- 282DecaturAlabama 6.6
- 282Ponca CityOklahoma 6.6
- 282ClintonIowa 6.6
- 282South BendIndiana 6.6
- 282Port HuronMichigan 6.6
- 282West MifflinPennsylvania 6.6
- 282Goletalow-cost sensorsCalifornia 6.6
- 282LancasterCalifornia 6.6
- 282SalinasCalifornia 6.6
- 282Cedar CityUtah 6.6
- 282Fort CollinsColorado 6.6
- 282AshlandOregon 6.6
- 282The DallesOregon 6.6
- 282BellinghamWashington 6.6
- 296Ferry PassFlorida 6.5
- 296DecaturIllinois 6.5
- 296Upper AltonIllinois 6.5
- 296Hunt ValleyMaryland 6.5
- 296Corpus ChristiTexas 6.5
- 296DentonTexas 6.5
- 296San AntonioTexas 6.5
- 296LafayetteIndiana 6.5
- 296YoungstownOhio 6.5
- 296WheelingWest Virginia 6.5
- 296MartinezCalifornia 6.5
- 296NipomoCalifornia 6.5
- 296AmarilloTexas 6.5
- 296CanbyOregon 6.5
- 296SeattleWashington 6.5
- 311HuntsvilleAlabama 6.4
- 311MontgomeryAlabama 6.4
- 311SpringfieldIllinois 6.4
- 311KennerLouisiana 6.4
- 311New OrleansLouisiana 6.4
- 311Roanoke RapidsNorth Carolina 6.4
- 311DaytonOhio 6.4
- 311SpringfieldOhio 6.4
- 311DavenportIowa 6.4
- 311Michigan CityIndiana 6.4
- 311LansingMichigan 6.4
- 311RochesterNew York 6.4
- 311LivermoreCalifornia 6.4
- 311RosevilleCalifornia 6.4
- 311Rio RanchoNew Mexico 6.4
- 311OdessaTexas 6.4
- 311HurricaneUtah 6.4
- 311CondaIdaho 6.4
- 329Bonita SpringsFlorida 6.3
- 329JacksonvilleFlorida 6.3
- 329BrunswickGeorgia 6.3
- 329Valley StationKentucky 6.3
- 329Kansas CityMissouri 6.3
- 329AshburnVirginia 6.3
- 329East HamptonVirginia 6.3
- 329MuncieIndiana 6.3
- 329TaylorMichigan 6.3
- 329AkronOhio 6.3
- 329LancasterPennsylvania 6.3
- 329ScrantonPennsylvania 6.3
- 329Eau ClaireWisconsin 6.3
- 329Spokane ValleyWashington 6.3
- 343NewarkDelaware 6.2
- 343Fort LauderdaleFlorida 6.2
- 343MiamiFlorida 6.2
- 343LemayMissouri 6.2
- 343LawtonOklahoma 6.2
- 343ChesterPennsylvania 6.2
- 343HendersonvilleTennessee 6.2
- 343ChesapeakeVirginia 6.2
- 343HuntingtonWest Virginia 6.2
- 343ChampaignIllinois 6.2
- 343FlintMichigan 6.2
- 343KalamazooMichigan 6.2
- 343YpsilantiMichigan 6.2
- 343AlbanyNew York 6.2
- 343DublinOhio 6.2
- 343MesaArizona 6.2
- 343RenoNevada 6.2
- 343Eagle PassTexas 6.2
- 343Idaho FallsIdaho 6.2
- 343YakimaWashington 6.2
- 363Fruit CoveFlorida 6.1
- 363LouisvilleKentucky 6.1
- 363ClemmonsNorth Carolina 6.1
- 363AdaOklahoma 6.1
- 363ConwaySouth Carolina 6.1
- 363KnoxvilleTennessee 6.1
- 363La PorteTexas 6.1
- 363PeoriaIllinois 6.1
- 363ElizabethNew Jersey 6.1
- 363South MilwaukeeWisconsin 6.1
- 363GlendaleArizona 6.1
- 363Carson CityNevada 6.1
- 363Moses LakeWashington 6.1
- 376EvansvilleIndiana 6.0
- 376University CityMissouri 6.0
- 376PortsmouthOhio 6.0
- 376College StationTexas 6.0
- 376KokomoIndiana 6.0
- 376PatersonNew Jersey 6.0
- 376TrentonNew Jersey 6.0
- 376CarlislePennsylvania 6.0
- 376Green BayWisconsin 6.0
- 376MadisonWisconsin 6.0
- 376MaranaArizona 6.0
- 376ChicoCalifornia 6.0
- 376Colorado SpringsColorado 6.0
- 376ShorelineWashington 6.0
- 390PaducahKentucky 5.9
- 390TampaFlorida 5.9
- 390DyersburgTennessee 5.9
- 390BrownsvilleTexas 5.9
- 390SpringfieldVirginia 5.9
- 390EastpointeMichigan 5.9
- 390JenisonMichigan 5.9
- 390New York CityNew York 5.9
- 390PittsburghPennsylvania 5.9
- 390AppletonWisconsin 5.9
- 390DenverColorado 5.9
- 401WashingtonDistrict of Columbia 5.8
- 401Belle GladeFlorida 5.8
- 401FishersIndiana 5.8
- 401NashvilleTennessee 5.8
- 401CharlestonWest Virginia 5.8
- 401DanburyConnecticut 5.8
- 401MolineIllinois 5.8
- 401Lexingtonlow-cost sensorsMassachusetts 5.8
- 401LincolnNebraska 5.8
- 401BethlehemPennsylvania 5.8
- 401RutlandVermont 5.8
- 401ParadiseCalifornia 5.8
- 401MilwaukieOregon 5.8
- 414ValricoFlorida 5.7
- 414JasperIndiana 5.7
- 414BeltonTexas 5.7
- 414Cleveland HeightsOhio 5.7
- 414Des MoinesIowa 5.7
- 414Lincoln ParkMichigan 5.7
- 414LindenNew Jersey 5.7
- 414NorristownPennsylvania 5.7
- 414ReadingPennsylvania 5.7
- 414Casas AdobesArizona 5.7
- 414OaklandCalifornia 5.7
- 414HobbsNew Mexico 5.7
- 414BoulderColorado 5.7
- 414TacomaWashington 5.7
- 428GainesvilleFlorida 5.6
- 428Palm CityFlorida 5.6
- 428Saint MatthewsKentucky 5.6
- 428ArnoldMissouri 5.6
- 428PennsaukenNew Jersey 5.6
- 428SewellNew Jersey 5.6
- 428LaredoTexas 5.6
- 428San MarcosTexas 5.6
- 428RichmondVirginia 5.6
- 428Rose HillVirginia 5.6
- 428BloomingtonIllinois 5.6
- 428MedinaOhio 5.6
- 428AllentownPennsylvania 5.6
- 428WilkinsburgPennsylvania 5.6
- 428TempeArizona 5.6
- 428Lakewoodlow-cost sensorsColorado 5.6
- 428ReddingCalifornia 5.6
- 428Port AngelesWashington 5.6
- 428Tri-CitiesWashington 5.6
- 447Delray BeachFlorida 5.5
- 447TaylorTexas 5.5
- 447CharlottesvilleVirginia 5.5
- 447New HavenConnecticut 5.5
- 447SpringfieldMassachusetts 5.5
- 447SyracuseNew York 5.5
- 447LittletonColorado 5.5
- 454WilmingtonDelaware 5.4
- 454JeffersontownKentucky 5.4
- 454RaymoreMissouri 5.4
- 454Toms RiverNew Jersey 5.4
- 454YorkPennsylvania 5.4
- 454HarrisonburgVirginia 5.4
- 454HartfordConnecticut 5.4
- 454WaterburyConnecticut 5.4
- 454ZionIllinois 5.4
- 454AndersonIndiana 5.4
- 454PainesvilleOhio 5.4
- 454Shaker HeightsOhio 5.4
- 454EriePennsylvania 5.4
- 454McKeesportPennsylvania 5.4
- 454State CollegePennsylvania 5.4
- 454WeirtonWest Virginia 5.4
- 454Grand JunctionColorado 5.4
- 454HillsboroOregon 5.4
- 472Oak RidgeFlorida 5.3
- 472SarasotaFlorida 5.3
- 472West PensacolaFlorida 5.3
- 472ClarksvilleTennessee 5.3
- 472JacksonTennessee 5.3
- 472HopewellVirginia 5.3
- 472BostonMassachusetts 5.3
- 472PittsfieldMassachusetts 5.3
- 472Jersey CityNew Jersey 5.3
- 472TucsonArizona 5.3
- 472FolsomCalifornia 5.3
- 472RidgecrestCalifornia 5.3
- 472San LeandroCalifornia 5.3
- 472VallejoCalifornia 5.3
- 472PortlandOregon 5.3
- 472SalemOregon 5.3
- 472Salmon CreekWashington 5.3
- 489Fort SmithArkansas 5.2
- 489DoverDelaware 5.2
- 489Daytona BeachFlorida 5.2
- 489HomesteadFlorida 5.2
- 489ColumbiaTennessee 5.2
- 489GreenfieldMassachusetts 5.2
- 489Weirton HeightsWest Virginia 5.2
- 489MercedCalifornia 5.2
- 489OxnardCalifornia 5.2
- 489BeavertonOregon 5.2
- 489GreshamOregon 5.2
- 489Picnic Point-North LynnwoodWashington 5.2
- 501BearDelaware 5.1
- 501Deerfield BeachFlorida 5.1
- 501AshlandKentucky 5.1
- 501Fort ThomasKentucky 5.1
- 501AshevilleNorth Carolina 5.1
- 501GeorgetownTexas 5.1
- 501LowellMassachusetts 5.1
- 501LynnMassachusetts 5.1
- 501WorcesterMassachusetts 5.1
- 501AugustaMaine 5.1
- 501PortlandMaine 5.1
- 501AltoonaPennsylvania 5.1
- 501HermitagePennsylvania 5.1
- 501ProvidenceRhode Island 5.1
- 501Redwood CityCalifornia 5.1
- 501Santa CruzCalifornia 5.1
- 501TruckeeCalifornia 5.1
- 501PuebloColorado 5.1
- 501Rock SpringsWyoming 5.1
- 520Coconut CreekFlorida 5.0
- 520Lexington-FayetteKentucky 5.0
- 520ElktonMaryland 5.0
- 520RockvilleMaryland 5.0
- 520ScaggsvilleMaryland 5.0
- 520GreenvilleNorth Carolina 5.0
- 520MaryvilleTennessee 5.0
- 520RoanokeVirginia 5.0
- 520KeeneNew Hampshire 5.0
- 520AtascaderoCalifornia 5.0
- 520GaltCalifornia 5.0
- 520ParklandWashington 5.0
- 532DavieFlorida 4.9
- 532Safety HarborFlorida 4.9
- 532BloomingtonIndiana 4.9
- 532White OakOhio 4.9
- 532KingsportTennessee 4.9
- 532BrocktonMassachusetts 4.9
- 532HaverhillMassachusetts 4.9
- 532PawtucketRhode Island 4.9
- 532AlbanyOregon 4.9
- 532LongviewWashington 4.9
- 532Oxon Hill-GlassmanorMaryland 4.9
- 532RandolphNew Jersey 4.9
- 544OrlandoFlorida 4.8
- 544MarquetteMichigan 4.8
- 544PortsmouthNew Hampshire 4.8
- 544UticaNew York 4.8
- 544BridgeportConnecticut 4.8
- 544Ken CarylColorado 4.8
- 544Grants PassOregon 4.8
- 544BadgerAlaska 4.8
- 552New AlbanyIndiana 4.7
- 552LibertyMissouri 4.7
- 552North ChicopeeMassachusetts 4.7
- 552QuincyMassachusetts 4.7
- 552DerryNew Hampshire 4.7
- 552Fort LeeNew Jersey 4.7
- 552DavisCalifornia 4.7
- 552Las CrucesNew Mexico 4.7
- 552LubbockTexas 4.7
- 561Palm BayFlorida 4.6
- 561WellingtonFlorida 4.6
- 561BaltimoreMaryland 4.6
- 561New BrunswickNew Jersey 4.6
- 561PleasantonCalifornia 4.6
- 561AnacortesWashington 4.6
- 567Winter ParkFlorida 4.5
- 567ColumbusIndiana 4.5
- 567CookevilleTennessee 4.5
- 567BangorMaine 4.5
- 567JohnstownPennsylvania 4.5
- 567LincolnCalifornia 4.5
- 567CentraliaWashington 4.5
- 567CasperWyoming 4.5
- 575SpringfieldMissouri 4.4
- 575New LondonConnecticut 4.4
- 575Fall RiverMassachusetts 4.4
- 575LewistonMaine 4.4
- 575HolbrookNew York 4.4
- 575BellevueWashington 4.4
- 575EllensburgWashington 4.4
- 575VancouverWashington 4.4
- 583NewburghNew York 4.3
- 583Apache JunctionArizona 4.3
- 583WoodburnOregon 4.3
- 583LaceyWashington 4.3
- 587Atlantic CityNew Jersey 4.2
- 587PleasantvilleNew Jersey 4.2
- 587LebanonOhio 4.2
- 587Arroyo GrandeCalifornia 4.2
- 587LompocCalifornia 4.2
- 587VacavilleCalifornia 4.2
- 587AnchorageAlaska 4.2
- 594MuscatineIowa 4.1
- 594RoseburgOregon 4.1
- 594BremertonWashington 4.1
- 594WenatcheeWashington 4.1
- 598South VinelandNew Jersey 4.0
- 598CoventryRhode Island 4.0
- 598San RafaelCalifornia 4.0
- 598TracyCalifornia 4.0
- 598CorvallisOregon 4.0
- 598DallasOregon 4.0
- 598Makakilo / Kapolei / Honokai HaleHawaii 4.0
- 605EdgewoodMaryland 3.9
- 605South LaurelMaryland 3.9
- 605AberdeenWashington 3.9
- 608SpringdaleArkansas 3.8
- 608WestonFlorida 3.8
- 608CheyenneWyoming 3.8
- 611GahannaOhio 3.7
- 611San Luis ObispoCalifornia 3.7
- 613HagerstownMaryland 3.6
- 613McMinnvilleOregon 3.6
- 615White PlainsNew York 3.5
- 615LaramieWyoming 3.5
- 617BayonneNew Jersey 3.4
- 617LimaOhio 3.4
- 617Green ValleyArizona 3.4
- 620KahuluiHawaii 3.2
- 621GilroyCalifornia 3.1
- 621HonoluluHawaii 3.1
- 623ConcordCalifornia 3.0
- 623Coos BayOregon 3.0
- 623FairbanksAlaska 3.0
- 626New CityNew York 2.9
- 626HiloHawaii 2.9
- 628Mount VernonWashington 2.6
- 629Oak HarborWashington 2.5
- 630KīheiHawaii 2.4
- 631MarysvilleWashington 2.3
- 632Santa RosaCalifornia 2.0
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
All cities in the world, September 2024 · United States now
Use this board
SmogRank, most polluted cities in United States, PM2.5, September 2024, smogrank.com/us/history/2024-09 (accessed 2 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.