SmogRank / World / United States / February 2023
Most polluted cities in United States, February 2023
422 cities in United States ranked by their average PM2.5 over the 28 days. Worst: Millcreek at 16.5 µg/m³, #272 of 1,175 cities in the world. Cleanest: Laramie at 1.4. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none for 25 of these 28 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.
← Millcreek 16.5 µg/m³
20 µg/m³0
- 1MillcreekUtah 65
- 2West JordanUtah 62
- 3HanfordCalifornia 60
- 4Salt Lake CityUtah 58
- 5MagnaUtah 58
- 6HoustonTexas 58
- 6ModestoCalifornia 58
- 8AlbanyGeorgia 58
- 8StocktonCalifornia 58
- 10West Valley CityUtah 57
- 11Grants PassOregon 57
- 12North OgdenUtah 57
- 13BakersfieldCalifornia 56
- 13Arden-ArcadeCalifornia 56
- 15BensalemPennsylvania 56
- 15West MifflinPennsylvania 56
- 17PennsaukenNew Jersey 56
- 18FresnoCalifornia 56
- 19Coconut CreekFlorida 56
- 20Lincoln ParkMichigan 55
- 21LancasterPennsylvania 55
- 22YakimaWashington 55
- 23NewarkDelaware 55
- 23VisaliaCalifornia 55
- 25Phenix CityAlabama 55
- 25HarrisburgPennsylvania 55
- 27BaytownTexas 54
- 28IndianapolisIndiana 54
- 28Missouri CityTexas 54
- 28HaverhillMassachusetts 54
- 28ElizabethNew Jersey 54
- 32AugustaGeorgia 54
- 32PasadenaTexas 54
- 32LebanonPennsylvania 54
- 35East RidgeTennessee 54
- 35GreeleyColorado 54
- 37NorwoodOhio 54
- 37DetroitMichigan 54
- 37ReadingPennsylvania 54
- 40ClevelandOhio 53
- 40SteubenvilleOhio 53
- 42HernandoMississippi 53
- 42AustinTexas 53
- 42DearbornMichigan 53
- 42CantonOhio 53
- 42CalexicoCalifornia 53
- 42MercedCalifornia 53
- 48ColumbusGeorgia 53
- 48CarlislePennsylvania 53
- 50SacramentoCalifornia 53
- 51GreenvilleSouth Carolina 53
- 51BethlehemPennsylvania 53
- 51CorcoranCalifornia 53
- 54SpringfieldMassachusetts 52
- 54Los AngelesCalifornia 52
- 54RosevilleCalifornia 52
- 54ButteMontana 52
- 58JacksonMississippi 52
- 58ConroeTexas 52
- 58Bay CityMichigan 52
- 58KalamazooMichigan 52
- 58AltamontOregon 52
- 63WilmingtonDelaware 52
- 63SavannahGeorgia 52
- 63JeffersonvilleIndiana 52
- 63Valley StationKentucky 52
- 63PhiladelphiaPennsylvania 52
- 63EdinburgTexas 52
- 63Fort WorthTexas 52
- 63Mission BendTexas 52
- 63TurlockCalifornia 52
- 72Warner RobinsGeorgia 52
- 72LouisvilleKentucky 52
- 72St. LouisMissouri 52
- 72NorristownPennsylvania 52
- 72El PasoTexas 52
- 77TampaFlorida 52
- 77ValdostaGeorgia 52
- 77LexingtonNorth Carolina 52
- 77YorkPennsylvania 52
- 77DallasTexas 52
- 77West FargoNorth Dakota 52
- 77AllentownPennsylvania 52
- 84Little RockArkansas 51
- 84ChalmetteLouisiana 51
- 84SulphurLouisiana 51
- 84Calumet CityIllinois 51
- 84EwingNew Jersey 51
- 84YoungstownOhio 51
- 84PittsburghPennsylvania 51
- 91East Saint LouisIllinois 51
- 91MiddletownOhio 51
- 91ClintonIowa 51
- 91DublinOhio 51
- 91OntarioCalifornia 51
- 91SheridanWyoming 51
- 97GainesvilleGeorgia 51
- 97Oklahoma CityOklahoma 51
- 97SpartanburgSouth Carolina 51
- 97WaterburyConnecticut 51
- 97Long BeachCalifornia 51
- 97MedfordOregon 51
- 97OremUtah 51
- 104JeffersontownKentucky 50
- 104Shaker HeightsOhio 50
- 104Jurupa ValleyCalifornia 50
- 107CincinnatiOhio 49
- 107New York CityNew York 49
- 107BridgeportConnecticut 49
- 107RichmondCalifornia 49
- 107WoodlandCalifornia 49
- 107Yuba CityCalifornia 49
- 113Ferry PassFlorida 49
- 113SpringfieldMissouri 49
- 113Deer ParkTexas 49
- 113GreenfieldMassachusetts 49
- 113KeeneNew Hampshire 49
- 113JohnstownPennsylvania 49
- 113ThorntonColorado 49
- 120TrussvilleAlabama 48
- 120Palm BayFlorida 48
- 120LaredoTexas 48
- 120New HavenConnecticut 48
- 120Franklin ParkIllinois 48
- 120HammondIndiana 48
- 126Terre HauteIndiana 48
- 126YpsilantiMichigan 48
- 126New BrunswickNew Jersey 48
- 126State CollegePennsylvania 48
- 126WilkinsburgPennsylvania 48
- 131PrichardAlabama 47
- 131BearDelaware 47
- 131HattiesburgMississippi 47
- 131SpringfieldOhio 47
- 131LawtonOklahoma 47
- 131KnoxvilleTennessee 47
- 131Corpus ChristiTexas 47
- 131SaginawTexas 47
- 131East ChicagoIndiana 47
- 131Grand RapidsMichigan 47
- 131MinneapolisMinnesota 47
- 131Fort LeeNew Jersey 47
- 131ScrantonPennsylvania 47
- 131PawtucketRhode Island 47
- 131South MilwaukeeWisconsin 47
- 131MaderaCalifornia 47
- 131HillsboroOregon 47
- 148Saint MatthewsKentucky 47
- 148BartlettTennessee 47
- 148TrentonNew Jersey 47
- 148Eau ClaireWisconsin 47
- 148ChicoCalifornia 47
- 148OaklandCalifornia 47
- 154WichitaKansas 46
- 154ElizabethtownKentucky 46
- 154OwensboroKentucky 46
- 154ElktonMaryland 46
- 154PascagoulaMississippi 46
- 154BrownsvilleTexas 46
- 154NapervilleIllinois 46
- 154RutlandVermont 46
- 162Daytona BeachFlorida 46
- 162ValricoFlorida 46
- 162EvansvilleIndiana 46
- 162Saint PaulMinnesota 46
- 162MilwaukeeWisconsin 46
- 162WaukeshaWisconsin 46
- 162NogalesArizona 46
- 162LubbockTexas 46
- 162HerrimanUtah 46
- 171KennerLouisiana 45
- 171Rose HillVirginia 45
- 171Iowa CityIowa 45
- 171TaylorMichigan 45
- 171AppletonWisconsin 45
- 171Las VegasNevada 45
- 171KentWashington 45
- 178Palm CityFlorida 44
- 178AshlandKentucky 44
- 178EdmondOklahoma 44
- 178NashvilleTennessee 44
- 178College StationTexas 44
- 178AndersonIndiana 44
- 178La CrosseWisconsin 44
- 178FolsomCalifornia 44
- 178VallejoCalifornia 44
- 178TooeleUtah 44
- 188JacksonvilleFlorida 44
- 188WellingtonFlorida 44
- 188FlorenceSouth Carolina 44
- 188Saint AndrewsSouth Carolina 44
- 188HendersonvilleTennessee 44
- 188SpringfieldVirginia 44
- 188South BendIndiana 44
- 188McKeesportPennsylvania 44
- 196Belle GladeFlorida 43
- 196Deerfield BeachFlorida 43
- 196ScaggsvilleMaryland 43
- 196CharlotteNorth Carolina 43
- 196RaleighNorth Carolina 43
- 196La PorteTexas 43
- 196Cedar RapidsIowa 43
- 196JolietIllinois 43
- 196Port HuronMichigan 43
- 196HermitagePennsylvania 43
- 196MadisonWisconsin 43
- 196VancouverWashington 43
- 208MiamiFlorida 43
- 208SarasotaFlorida 43
- 208GreensboroNorth Carolina 43
- 208Winston-SalemNorth Carolina 43
- 212Fruit CoveFlorida 42
- 212Lake MaryFlorida 42
- 212DecaturIllinois 42
- 212GulfportMississippi 42
- 212FayettevilleNorth Carolina 42
- 212ColumbiaTennessee 42
- 212MolineIllinois 42
- 212RockfordIllinois 42
- 212AlbanyNew York 42
- 212PhoenixArizona 42
- 212Arroyo GrandeCalifornia 42
- 212El CajonCalifornia 42
- 212Fort CollinsColorado 42
- 225GainesvilleFlorida 42
- 225WestonFlorida 42
- 225DerbyKansas 42
- 225Ponca CityOklahoma 42
- 225HartfordConnecticut 42
- 225PortageIndiana 42
- 225JenisonMichigan 42
- 225BurnsvilleMinnesota 42
- 225Saint CloudMinnesota 42
- 225AkronOhio 42
- 225ClovisCalifornia 42
- 225PleasantonCalifornia 42
- 225San DiegoCalifornia 42
- 238DoverDelaware 41
- 238Safety HarborFlorida 41
- 238Kansas CityKansas 41
- 238ArnoldMissouri 41
- 238JacksonTennessee 41
- 238RichmondVirginia 41
- 238DavenportIowa 41
- 238CaryIllinois 41
- 238Des PlainesIllinois 41
- 238NorthbrookIllinois 41
- 238Apple ValleyMinnesota 41
- 238EriePennsylvania 41
- 238San LeandroCalifornia 41
- 238Santa BarbaraCalifornia 41
- 252PaducahKentucky 41
- 252ClemmonsNorth Carolina 41
- 252ZionIllinois 41
- 252WorcesterMassachusetts 41
- 252Saint MichaelMinnesota 41
- 252YumaArizona 41
- 252RiversideCalifornia 41
- 252SalinasCalifornia 41
- 252Spanish ForkUtah 41
- 261Delray BeachFlorida 40
- 261BrunswickGeorgia 40
- 261SpringfieldIllinois 40
- 261Fort ThomasKentucky 40
- 261Kansas CityMissouri 40
- 261University CityMissouri 40
- 261CharlestonWest Virginia 40
- 261GaryIndiana 40
- 261RochesterNew York 40
- 261BurlingtonVermont 40
- 271OlatheKansas 39
- 271South VinelandNew Jersey 39
- 271BostonMassachusetts 39
- 271WarrenOhio 39
- 271LivermoreCalifornia 39
- 271San FranciscoCalifornia 39
- 271Eagle PassTexas 39
- 271LongmontColorado 39
- 279WashingtonDistrict of Columbia 39
- 279BaltimoreMaryland 39
- 279New LondonConnecticut 39
- 279AnkenyIowa 39
- 279LafayetteIndiana 39
- 279BerkeleyCalifornia 39
- 279San JoseCalifornia 39
- 279Santa RosaCalifornia 39
- 279ReddingCalifornia 39
- 279EugeneOregon 39
- 279SeattleWashington 39
- 290BloomingtonIndiana 38
- 290North ChicopeeMassachusetts 38
- 290Jersey CityNew Jersey 38
- 290MedinaOhio 38
- 290OceansideCalifornia 38
- 290UkiahCalifornia 38
- 290MissoulaMontana 38
- 297DavieFlorida 38
- 297New AlbanyIndiana 38
- 297PittsfieldMassachusetts 38
- 297Weirton HeightsWest Virginia 38
- 297BrawleyCalifornia 38
- 297TigardOregon 38
- 303MorrisvilleNorth Carolina 37
- 303Toms RiverNew Jersey 37
- 303ClarksvilleTennessee 37
- 303CookevilleTennessee 37
- 303DyersburgTennessee 37
- 303MaryvilleTennessee 37
- 303BeltonTexas 37
- 303East HamptonVirginia 37
- 303WatertownSouth Dakota 37
- 303GilroyCalifornia 37
- 303Spanish SpringsNevada 37
- 314FishersIndiana 37
- 314TopekaKansas 37
- 314MasonOhio 37
- 314CharlottesvilleVirginia 37
- 314ChesapeakeVirginia 37
- 314KokomoIndiana 37
- 314LowellMassachusetts 37
- 314LimaOhio 37
- 314ProvidenceRhode Island 37
- 314San RafaelCalifornia 37
- 314RenoNevada 37
- 325ColumbusIndiana 36
- 325PleasantvilleNew Jersey 36
- 325HopewellVirginia 36
- 325SyracuseNew York 36
- 325VictorvilleCalifornia 36
- 330DurhamNorth Carolina 36
- 330BismarckNorth Dakota 36
- 332Saint JosephMissouri 35
- 332ClaytonNorth Carolina 35
- 332Roanoke RapidsNorth Carolina 35
- 332QuincyMassachusetts 35
- 332IndioCalifornia 35
- 337RoanokeVirginia 34
- 337BrocktonMassachusetts 34
- 337DenverColorado 34
- 337OdessaTexas 34
- 341LynnMassachusetts 34
- 341AlbuquerqueNew Mexico 34
- 341Carson CityNevada 34
- 341Rapid CitySouth Dakota 34
- 341KahuluiHawaii 34
- 346SuperiorWisconsin 33
- 346Santa CruzCalifornia 33
- 346Makakilo / Kapolei / Honokai HaleHawaii 33
- 349EdgewoodMaryland 33
- 349LemayMissouri 33
- 349Des MoinesIowa 33
- 349LewistonMaine 33
- 349GlendaleArizona 33
- 349TempeArizona 33
- 349PortlandOregon 33
- 349TacomaWashington 33
- 357IndependenceMissouri 32
- 357PortsmouthNew Hampshire 32
- 357AtascaderoCalifornia 32
- 357ParklandWashington 32
- 357RentonWashington 32
- 362South LaurelMaryland 32
- 362DuluthMinnesota 32
- 362DerryNew Hampshire 32
- 365RockvilleMaryland 31
- 365BangorMaine 31
- 365EllensburgWashington 31
- 368GreenvilleNorth Carolina 31
- 368ElkhartIndiana 31
- 368Casas AdobesArizona 31
- 371BellevueNebraska 30
- 371Grand JunctionColorado 30
- 371Apache JunctionArizona 30
- 374Redwood CityCalifornia 29
- 375HonoluluHawaii 28
- 376AshevilleNorth Carolina 28
- 376LaconiaNew Hampshire 28
- 376HelenaMontana 28
- 379CoventryRhode Island 27
- 379MesaArizona 27
- 379TemeculaCalifornia 27
- 379Sunland ParkNew Mexico 27
- 383AmarilloTexas 27
- 383CheyenneWyoming 27
- 383Rock SpringsWyoming 27
- 386Spring ValleyNevada 26
- 387PortlandMaine 26
- 387Sioux FallsSouth Dakota 26
- 387BillingsMontana 26
- 387BremertonWashington 26
- 391AberdeenSouth Dakota 24
- 391El CentroCalifornia 24
- 391Spokane ValleyWashington 24
- 394HollandMichigan 24
- 394EnterpriseNevada 24
- 394HendersonNevada 24
- 394Cedar CityUtah 24
- 398LibertyMissouri 23
- 399OmahaNebraska 23
- 399BellinghamWashington 23
- 401BrookingsSouth Dakota 22
- 401Thousand OaksCalifornia 22
- 403AnchorageAlaska 22
- 404Simi ValleyCalifornia 21
- 405NipomoCalifornia 21
- 406Ken CarylColorado 20
- 406Summerlin SouthNevada 20
- 408OrcuttCalifornia 19
- 409HollisterCalifornia 19
- 409LompocCalifornia 19
- 409HobbsNew Mexico 19
- 412Colorado SpringsColorado 18
- 412GilletteWyoming 18
- 414Boulder CityNevada 18
- 414HurricaneUtah 18
- 416BanningCalifornia 16
- 417FillmoreCalifornia 15
- 417HiloHawaii 15
- 419MesquiteNevada 14
- 420RidgecrestCalifornia 13
- 421CasperWyoming 9
- 422LaramieWyoming 8
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, February 2023 · United States now
Use this board
SmogRank, most polluted cities in United States, PM2.5, February 2023, smogrank.com/us/history/2023-02 (accessed 2 Oct 2026).
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