SmogRank / World / United States / August 2024
Most polluted cities in United States, August 2024
626 cities in United States ranked by their average PM2.5 over the 31 days. Worst: Boise at 25.0 µg/m³, #23 of 1,551 cities in the world. Cleanest: Green Valley at 2.4. A city needs measurements on 70% of the days to be ranked.
← Boise 25.0
- 1BoiseIdaho 81
- 2MeridianIdaho 80
- 3NampaIdaho 75
- 4AltamontOregon 69
- 5BartlettTennessee 68
- 6Twin FallsIdaho 67
- 7BirminghamAlabama 66
- 8Little RockArkansas 64
- 9West MemphisArkansas 64
- 10Columbialow-cost sensorsMissouri 64
- 10ConroeTexas 64
- 12ShreveportLouisiana 63
- 13Great FallsMontana 63
- 14FontanaCalifornia 62
- 15Jurupa ValleyCalifornia 61
- 16RedfordMichigan 61
- 17BendOregon 61
- 18El PasoTexas 60
- 19HernandoMississippi 60
- 19MedfordOregon 60
- 21LawrencevilleGeorgia 60
- 22GainesvilleGeorgia 60
- 22DallasTexas 60
- 24Baton RougeLouisiana 59
- 25Los AngelesCalifornia 59
- 26East RidgeTennessee 59
- 27SpringdaleArkansas 59
- 27RiversideCalifornia 59
- 27RedmondOregon 59
- 30LafayetteLouisiana 59
- 30BurbankCalifornia 59
- 32HoustonTexas 58
- 32TexarkanaTexas 58
- 34SaginawTexas 58
- 34GlendoraCalifornia 58
- 36PortervilleCalifornia 58
- 37McAlesterOklahoma 58
- 37LewistonIdaho 58
- 39MooreOklahoma 57
- 39DublinOhio 57
- 41Port ArthurTexas 57
- 41FresnoCalifornia 57
- 41AshlandOregon 57
- 44VisaliaCalifornia 57
- 45Santa ClaritaCalifornia 56
- 46ChattanoogaTennessee 56
- 47Chula VistaCalifornia 56
- 47HelenaMontana 56
- 49East Saint LouisIllinois 56
- 49PhiladelphiaPennsylvania 56
- 49West MifflinPennsylvania 56
- 49MoscowIdaho 56
- 53AtlantaGeorgia 56
- 53Oklahoma CityOklahoma 56
- 53Fort WorthTexas 56
- 56GadsdenAlabama 55
- 56ColumbusOhio 55
- 56CorsicanaTexas 55
- 56ChicoCalifornia 55
- 60AlbanyNew York 55
- 60OregonOhio 55
- 60VictorvilleCalifornia 55
- 63KennerLouisiana 55
- 63WyomingMichigan 55
- 63AnaheimCalifornia 55
- 66EvansvilleIndiana 55
- 66CincinnatiOhio 55
- 66PocatelloIdaho 55
- 69TrussvilleAlabama 55
- 69JacksonMississippi 55
- 69EdmondOklahoma 55
- 69BeltonTexas 55
- 73SulphurLouisiana 55
- 73MiddletownOhio 55
- 73BakersfieldCalifornia 55
- 73Carsonlow-cost sensorsCalifornia 55
- 73BismarckNorth Dakota 55
- 78AugustaGeorgia 54
- 78JeffersonvilleIndiana 54
- 78LouisvilleKentucky 54
- 78HattiesburgMississippi 54
- 78NorwoodOhio 54
- 78SpartanburgSouth Carolina 54
- 78Missouri CityTexas 54
- 85KennesawGeorgia 54
- 85AdaOklahoma 54
- 85TulsaOklahoma 54
- 85HanfordCalifornia 54
- 85TooeleUtah 54
- 90ChalmetteLouisiana 54
- 90MorrisvilleNorth Carolina 54
- 90KnoxvilleTennessee 54
- 90GaryIndiana 54
- 94DecaturAlabama 54
- 94FishersIndiana 54
- 94IndianapolisIndiana 54
- 94CantonOhio 54
- 94ClevelandOhio 54
- 94ClovisCalifornia 54
- 94El CajonCalifornia 54
- 94Candler-McAfeeGeorgia 54
- 94MidwayFlorida 54
- 103St. LouisMissouri 54
- 103DurhamNorth Carolina 54
- 103HendersonvilleTennessee 54
- 103NashvilleTennessee 54
- 103Bay CityMichigan 54
- 103Hawthornelow-cost sensorsCalifornia 54
- 103San DiegoCalifornia 54
- 103SocorroTexas 54
- 111PrichardAlabama 53
- 111MissionTexas 53
- 111CaryIllinois 53
- 111DearbornMichigan 53
- 111WestervilleOhio 53
- 116FairhopeAlabama 53
- 116OlatheKansas 53
- 116MasonOhio 53
- 116SuperiorWisconsin 53
- 120HuntsvilleAlabama 53
- 120ColumbusGeorgia 53
- 120JasperIndiana 53
- 120Valley StationKentucky 53
- 120DuluthMinnesota 53
- 120HarrisburgPennsylvania 53
- 120MillcreekUtah 53
- 120SunnysideWashington 53
- 128ChesapeakeVirginia 53
- 128WarrenOhio 53
- 128Inglewoodlow-cost sensorsCalifornia 53
- 128RichmondCalifornia 53
- 132Winston-SalemNorth Carolina 53
- 132BaytownTexas 53
- 132East HamptonVirginia 53
- 132RochesterMinnesota 53
- 132PowayCalifornia 53
- 132Torrancelow-cost sensorsCalifornia 53
- 132La Crescenta-Montroselow-cost sensorsCalifornia 53
- 139Ferry PassFlorida 52
- 139PortsmouthOhio 52
- 139JacksonTennessee 52
- 139PasadenaTexas 52
- 139Franklin ParkIllinois 52
- 139Agouralow-cost sensorsCalifornia 52
- 139Grants PassOregon 52
- 139Rapid CitySouth Dakota 52
- 139YakimaWashington 52
- 148ValdostaGeorgia 52
- 148Granite CityIllinois 52
- 148TopekaKansas 52
- 148Saint MatthewsKentucky 52
- 148Saint JosephMissouri 52
- 148GreensboroNorth Carolina 52
- 148RaleighNorth Carolina 52
- 148Roanoke RapidsNorth Carolina 52
- 148DaytonOhio 52
- 148LawtonOklahoma 52
- 148NapervilleIllinois 52
- 148HammondIndiana 52
- 148West FargoNorth Dakota 52
- 148SteubenvilleOhio 52
- 148Lomitalow-cost sensorsCalifornia 52
- 148Santa Monicalow-cost sensorsCalifornia 52
- 164Fort LauderdaleFlorida 52
- 164MaconGeorgia 52
- 164JeffersontownKentucky 52
- 164New OrleansLouisiana 52
- 164NorthbrookIllinois 52
- 164RockfordIllinois 52
- 164New York CityNew York 52
- 171OcalaFlorida 52
- 171Warner RobinsGeorgia 52
- 171SpringfieldIllinois 52
- 171Wake Forestlow-cost sensorsNorth Carolina 52
- 171AustinTexas 52
- 171BurnsvilleMinnesota 52
- 171ShakopeeMinnesota 52
- 171BensalemPennsylvania 52
- 171Coeur d'AleneIdaho 52
- 171ButteMontana 52
- 171HermistonOregon 52
- 182PaducahKentucky 52
- 182Ponte Vedra BeachFlorida 52
- 182AlbanyGeorgia 52
- 182SpringfieldOhio 52
- 182Ponca CityOklahoma 52
- 182GreenvilleSouth Carolina 52
- 182Saint AndrewsSouth Carolina 52
- 182HuntingtonWest Virginia 52
- 182HartfordConnecticut 52
- 182BostonMassachusetts 52
- 182DetroitMichigan 52
- 182EwingNew Jersey 52
- 182PittsburghPennsylvania 52
- 182BozemanMontana 52
- 182SpokaneWashington 52
- 197AthensGeorgia 52
- 197GulfportMississippi 52
- 197CookevilleTennessee 52
- 197DyersburgTennessee 52
- 197Fort WayneIndiana 52
- 197PortageIndiana 52
- 197BrocktonMassachusetts 52
- 197Grand RapidsMichigan 52
- 197Saint PaulMinnesota 52
- 197ComptonCalifornia 52
- 197PullmanWashington 52
- 208BessemerAlabama 51
- 208MontgomeryAlabama 51
- 208Phenix CityAlabama 51
- 208McDonoughGeorgia 51
- 208DerbyKansas 51
- 208PascagoulaMississippi 51
- 208CharlotteNorth Carolina 51
- 208HickoryNorth Carolina 51
- 208College StationTexas 51
- 208MankatoMinnesota 51
- 208PerrysburgOhio 51
- 208WheelingWest Virginia 51
- 208IndioCalifornia 51
- 221DoverDelaware 51
- 221PennsaukenNew Jersey 51
- 221ChesterPennsylvania 51
- 221ColumbiaTennessee 51
- 221Live OakTexas 51
- 221AshburnVirginia 51
- 221DanburyConnecticut 51
- 221JolietIllinois 51
- 221Saint CloudMinnesota 51
- 221LindenNew Jersey 51
- 221McKeesportPennsylvania 51
- 221WilkinsburgPennsylvania 51
- 221Lake ElsinoreCalifornia 51
- 221BillingsMontana 51
- 221Walla WallaWashington 51
- 236Fort SmithArkansas 51
- 236NewarkDelaware 51
- 236DecaturIllinois 51
- 236Hunt ValleyMaryland 51
- 236LexingtonNorth Carolina 51
- 236JenksOklahoma 51
- 236FlorenceSouth Carolina 51
- 236North CharlestonSouth Carolina 51
- 236ClintonIowa 51
- 236MinneapolisMinnesota 51
- 236YoungstownOhio 51
- 236PendletonOregon 51
- 248FayettevilleNorth Carolina 50
- 248Atlantic CityNew Jersey 50
- 248PleasantvilleNew Jersey 50
- 248Toms RiverNew Jersey 50
- 248BrookfieldIllinois 50
- 248ElkhartIndiana 50
- 248MuncieIndiana 50
- 248TrentonNew Jersey 50
- 248RutlandVermont 50
- 248CorcoranCalifornia 50
- 258WashingtonDistrict of Columbia 49
- 258East LakeFlorida 49
- 258Lake MaryFlorida 49
- 258TallahasseeFlorida 49
- 258Mission BendTexas 49
- 258LowellMassachusetts 49
- 258SpringfieldMassachusetts 49
- 258ElizabethNew Jersey 49
- 258OceansideCalifornia 49
- 258ReddingCalifornia 49
- 258RexburgIdaho 49
- 269ClarksvilleTennessee 49
- 269HarrisonburgVirginia 49
- 269Cedar RapidsIowa 49
- 269Calumet CityIllinois 49
- 269ChampaignIllinois 49
- 269Michigan CityIndiana 49
- 269WorcesterMassachusetts 49
- 269Saint MichaelMinnesota 49
- 269ScrantonPennsylvania 49
- 269MilwaukeeWisconsin 49
- 269BridgeportConnecticut 49
- 269Long BeachCalifornia 49
- 269MaderaCalifornia 49
- 269OremUtah 49
- 269GilletteWyoming 49
- 284Kansas CityKansas 48
- 284SewellNew Jersey 48
- 284MaryvilleTennessee 48
- 284New HavenConnecticut 48
- 284WaterlooIowa 48
- 284HaverhillMassachusetts 48
- 284AugustaMaine 48
- 284KalamazooMichigan 48
- 284Port HuronMichigan 48
- 284LebanonPennsylvania 48
- 284HollisterCalifornia 48
- 284Yuba CityCalifornia 48
- 284North OgdenUtah 48
- 284Salt Lake CityUtah 48
- 284West Valley CityUtah 48
- 299Upper AltonIllinois 48
- 299ArnoldMissouri 48
- 299RichmondVirginia 48
- 299Rose HillVirginia 48
- 299New LondonConnecticut 48
- 299WaterburyConnecticut 48
- 299Des PlainesIllinois 48
- 299South BendIndiana 48
- 299Fall RiverMassachusetts 48
- 299PortsmouthNew Hampshire 48
- 299Jersey CityNew Jersey 48
- 299NorristownPennsylvania 48
- 299TurlockCalifornia 48
- 299Sunland ParkNew Mexico 48
- 299BountifulUtah 48
- 314BearDelaware 47
- 314WilmingtonDelaware 47
- 314Fort ThomasKentucky 47
- 314ClemmonsNorth Carolina 47
- 314GreenvilleNorth Carolina 47
- 314Corpus ChristiTexas 47
- 314EdinburgTexas 47
- 314TaylorTexas 47
- 314CharlottesvilleVirginia 47
- 314AnkenyIowa 47
- 314DavenportIowa 47
- 314PeoriaIllinois 47
- 314PortlandMaine 47
- 314FlintMichigan 47
- 314OmahaNebraska 47
- 314Fort LeeNew Jersey 47
- 314BuffaloNew York 47
- 314AkronOhio 47
- 314CarlislePennsylvania 47
- 314WaukeshaWisconsin 47
- 314UkiahCalifornia 47
- 314Spokane ValleyWashington 47
- 336LakelandFlorida 47
- 336Lexington-FayetteKentucky 47
- 336SpringfieldVirginia 47
- 336Iowa CityIowa 47
- 336AndersonIndiana 47
- 336QuincyMassachusetts 47
- 336LansingMichigan 47
- 336DerryNew Hampshire 47
- 336PatersonNew Jersey 47
- 336RochesterNew York 47
- 336BethlehemPennsylvania 47
- 336ReadingPennsylvania 47
- 336ProvidenceRhode Island 47
- 336WeirtonWest Virginia 47
- 336Simi ValleyCalifornia 47
- 336WoodlandCalifornia 47
- 336LongmontColorado 47
- 353AshlandKentucky 46
- 353RockvilleMaryland 46
- 353East ChicagoIndiana 46
- 353LafayetteIndiana 46
- 353LynnMassachusetts 46
- 353HollandMichigan 46
- 353TaylorMichigan 46
- 353MedinaOhio 46
- 353AllentownPennsylvania 46
- 353West JordanUtah 46
- 363MiamiFlorida 46
- 363ElktonMaryland 46
- 363YorkPennsylvania 46
- 363CharlestonWest Virginia 46
- 363JenisonMichigan 46
- 363KeeneNew Hampshire 46
- 363Weirton HeightsWest Virginia 46
- 363StocktonCalifornia 46
- 371SavannahGeorgia 45
- 371Lincoln ParkMichigan 45
- 371Apple ValleyMinnesota 45
- 371BlaineMinnesota 45
- 371YumaArizona 45
- 371BanningCalifornia 45
- 371Dodge CityKansas 45
- 371AmarilloTexas 45
- 371Columbia CityWashington 45
- 371Moses LakeWashington 45
- 371SheridanWyoming 45
- 382New AlbanyIndiana 44
- 382University CityMissouri 44
- 382White OakOhio 44
- 382RoanokeVirginia 44
- 382ChicagoIllinois 44
- 382KokomoIndiana 44
- 382PittsfieldMassachusetts 44
- 382BellevueNebraska 44
- 382HolbrookNew York 44
- 382JohnstownPennsylvania 44
- 382LancasterPennsylvania 44
- 382LivermoreCalifornia 44
- 382Thousand OaksCalifornia 44
- 382OdessaTexas 44
- 382The DallesOregon 44
- 397ScaggsvilleMaryland 44
- 397AshevilleNorth Carolina 44
- 397KingsportTennessee 44
- 397GeorgetownTexas 44
- 397La PorteTexas 44
- 397MolineIllinois 44
- 397North ChicopeeMassachusetts 44
- 397AltoonaPennsylvania 44
- 397Green BayWisconsin 44
- 397BrawleyCalifornia 44
- 397MartinezCalifornia 44
- 397Eagle PassTexas 44
- 397MissoulaMontana 44
- 410Bonita SpringsFlorida 43
- 410GainesvilleFlorida 43
- 410LemayMissouri 43
- 410South VinelandNew Jersey 43
- 410HopewellVirginia 43
- 410San JoseCalifornia 43
- 410HobbsNew Mexico 43
- 410Idaho FallsIdaho 43
- 410Oxon Hill-GlassmanorMaryland 43
- 410Arden-ArcadeCalifornia 43
- 420VeniceFlorida 43
- 420SpringfieldMissouri 43
- 420Oak LawnIllinois 43
- 420New BrunswickNew Jersey 43
- 420SyracuseNew York 43
- 420HermitagePennsylvania 43
- 420Eau ClaireWisconsin 43
- 420FillmoreCalifornia 43
- 420HerrimanUtah 43
- 420RandolphNew Jersey 43
- 430ColumbusIndiana 42
- 430Cleveland HeightsOhio 42
- 430BloomingtonIllinois 42
- 430KenmoreNew York 42
- 430Shaker HeightsOhio 42
- 430ToledoOhio 42
- 430MantecaCalifornia 42
- 430RosevilleCalifornia 42
- 438Fruit CoveFlorida 42
- 438RaymoreMissouri 42
- 438ConwaySouth Carolina 42
- 438San MarcosTexas 42
- 438EastpointeMichigan 42
- 438EriePennsylvania 42
- 438MadisonWisconsin 42
- 438El CentroCalifornia 42
- 438ModestoCalifornia 42
- 438Tri-CitiesWashington 42
- 448Coconut CreekFlorida 41
- 448West PensacolaFlorida 41
- 448BrunswickGeorgia 41
- 448BaltimoreMaryland 41
- 448YpsilantiMichigan 41
- 448AppletonWisconsin 41
- 448South MilwaukeeWisconsin 41
- 448NipomoCalifornia 41
- 448SacramentoCalifornia 41
- 448LubbockTexas 41
- 448CondaIdaho 41
- 448BellinghamWashington 41
- 460JacksonvilleFlorida 41
- 460LebanonOhio 41
- 460Santa BarbaraCalifornia 41
- 460Spanish SpringsNevada 41
- 460MagnaUtah 41
- 460Spanish ForkUtah 41
- 466Belle GladeFlorida 40
- 466BloomingtonIndiana 40
- 466BangorMaine 40
- 466White PlainsNew York 40
- 466PainesvilleOhio 40
- 466CoventryRhode Island 40
- 472ValricoFlorida 39
- 472Kansas CityMissouri 39
- 472Des MoinesIowa 39
- 472EugeneOregon 39
- 472HighlandUtah 39
- 472Rock SpringsWyoming 39
- 478Delray BeachFlorida 39
- 478HomesteadFlorida 39
- 478Oak RidgeFlorida 39
- 478GalvestonTexas 39
- 478ZionIllinois 39
- 478UticaNew York 39
- 478BrookingsSouth Dakota 39
- 478OrcuttCalifornia 39
- 478ParadiseCalifornia 39
- 478Carson CityNevada 39
- 478TigardOregon 39
- 489Daytona BeachFlorida 38
- 489SarasotaFlorida 38
- 489MuscatineIowa 38
- 489Goletalow-cost sensorsCalifornia 38
- 489RenoNevada 38
- 489GreeleyColorado 38
- 495TampaFlorida 38
- 495South LaurelMaryland 38
- 495LaredoTexas 38
- 495LewistonMaine 38
- 495AberdeenSouth Dakota 38
- 495Sioux FallsSouth Dakota 38
- 495AuburnWashington 38
- 495RentonWashington 38
- 495SeattleWashington 38
- 504Deerfield BeachFlorida 37
- 504Palm CityFlorida 37
- 504State CollegePennsylvania 37
- 504SalinasCalifornia 37
- 504CasperWyoming 37
- 509MarquetteMichigan 37
- 509ThorntonColorado 37
- 511EdgewoodMaryland 36
- 511BrownsvilleTexas 36
- 511LincolnNebraska 36
- 511NogalesArizona 36
- 511GaltCalifornia 36
- 511RidgecrestCalifornia 36
- 511Fort CollinsColorado 36
- 518New CityNew York 36
- 518NewburghNew York 36
- 518CalexicoCalifornia 36
- 518Santa CruzCalifornia 36
- 518ShorelineWashington 36
- 523DavieFlorida 35
- 523AtascaderoCalifornia 35
- 523EllensburgWashington 35
- 526Safety HarborFlorida 34
- 526LibertyMissouri 34
- 526Summerlin SouthNevada 34
- 529WellingtonFlorida 34
- 529BayonneNew Jersey 34
- 531Winter ParkFlorida 33
- 531FolsomCalifornia 33
- 531LancasterCalifornia 33
- 531Las CrucesNew Mexico 33
- 531BoulderColorado 33
- 536GahannaOhio 33
- 536OaklandCalifornia 33
- 536DenverColorado 33
- 539Seasidelow-cost sensorsCalifornia 32
- 540OrlandoFlorida 32
- 540Palm BayFlorida 32
- 540HagerstownMaryland 32
- 540San LeandroCalifornia 32
- 540TracyCalifornia 32
- 540Las VegasNevada 32
- 540Salmon CreekWashington 32
- 547Colorado SpringsColorado 31
- 547CanbyOregon 31
- 549Arroyo GrandeCalifornia 31
- 549MercedCalifornia 31
- 549AlbuquerqueNew Mexico 31
- 549TacomaWashington 31
- 553LimaOhio 30
- 553LincolnCalifornia 30
- 553LompocCalifornia 30
- 553MilwaukieOregon 30
- 557GlendaleArizona 29
- 557PhoenixArizona 29
- 559WestonFlorida 28
- 559OxnardCalifornia 28
- 559LongviewWashington 28
- 562MesaArizona 28
- 562Redwood CityCalifornia 28
- 562HendersonNevada 28
- 562Spring ValleyNevada 28
- 562HillsboroOregon 28
- 562RoseburgOregon 28
- 562SalemOregon 28
- 569MaranaArizona 27
- 569TempeArizona 27
- 569BellevueWashington 27
- 569ParklandWashington 27
- 569Port AngelesWashington 27
- 569Picnic Point-North LynnwoodWashington 27
- 575PleasantonCalifornia 27
- 575LittletonColorado 27
- 575PortlandOregon 27
- 578Ken CarylColorado 26
- 578Cedar CityUtah 26
- 578BeavertonOregon 26
- 578BremertonWashington 26
- 578CentraliaWashington 26
- 578Mount VernonWashington 26
- 578Makakilo / Kapolei / Honokai HaleHawaii 26
- 585GilroyCalifornia 26
- 585VacavilleCalifornia 26
- 585EnterpriseNevada 26
- 585AlbanyOregon 26
- 585AnacortesWashington 26
- 585WenatcheeWashington 26
- 591San RafaelCalifornia 25
- 591GreshamOregon 25
- 593Rio RanchoNew Mexico 24
- 593MesquiteNevada 24
- 595TucsonArizona 24
- 595Apache JunctionArizona 24
- 597HurricaneUtah 23
- 597Forest GroveOregon 23
- 597AberdeenWashington 23
- 600San Luis ObispoCalifornia 23
- 600Boulder CityNevada 23
- 602PuebloColorado 22
- 602CorvallisOregon 22
- 602LaceyWashington 22
- 602CheyenneWyoming 22
- 606Florinlow-cost sensorsCalifornia 21
- 606VancouverWashington 21
- 608Coos BayOregon 21
- 608WoodburnOregon 21
- 610Casas AdobesArizona 20
- 610LaramieWyoming 20
- 612KahuluiHawaii 19
- 612HonoluluHawaii 19
- 612BadgerAlaska 19
- 615Grand JunctionColorado 19
- 615McMinnvilleOregon 19
- 615MarysvilleWashington 19
- 615Oak HarborWashington 19
- 615AnchorageAlaska 19
- 620KīheiHawaii 17
- 620FairbanksAlaska 17
- 622DallasOregon 17
- 623ConcordCalifornia 16
- 624Santa RosaCalifornia 15
- 624HiloHawaii 15
- 626Green ValleyArizona 13
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
All cities in the world, August 2024 · United States now
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SmogRank, most polluted cities in United States, PM2.5, August 2024, smogrank.com/us/history/2024-08 (accessed 2 Oct 2026).
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