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 16.5
- 2West JordanUtah 15.0
- 3HanfordCalifornia 13.7
- 4Salt Lake CityUtah 13.1
- 5MagnaUtah 12.9
- 6HoustonTexas 12.8
- 6ModestoCalifornia 12.8
- 8AlbanyGeorgia 12.6
- 8StocktonCalifornia 12.6
- 10West Valley CityUtah 12.5
- 11Grants PassOregon 12.2
- 12North OgdenUtah 12.1
- 13BakersfieldCalifornia 12.0
- 13Arden-ArcadeCalifornia 12.0
- 15BensalemPennsylvania 11.9
- 15West MifflinPennsylvania 11.9
- 17PennsaukenNew Jersey 11.8
- 18FresnoCalifornia 11.7
- 19Coconut CreekFlorida 11.6
- 20Lincoln ParkMichigan 11.5
- 21LancasterPennsylvania 11.4
- 22YakimaWashington 11.3
- 23NewarkDelaware 11.2
- 23VisaliaCalifornia 11.2
- 25Phenix CityAlabama 11.1
- 25HarrisburgPennsylvania 11.1
- 27BaytownTexas 10.9
- 28IndianapolisIndiana 10.8
- 28Missouri CityTexas 10.8
- 28HaverhillMassachusetts 10.8
- 28ElizabethNew Jersey 10.8
- 32AugustaGeorgia 10.7
- 32PasadenaTexas 10.7
- 32LebanonPennsylvania 10.7
- 35East RidgeTennessee 10.6
- 35GreeleyColorado 10.6
- 37NorwoodOhio 10.5
- 37DetroitMichigan 10.5
- 37ReadingPennsylvania 10.5
- 40ClevelandOhio 10.4
- 40SteubenvilleOhio 10.4
- 42HernandoMississippi 10.3
- 42AustinTexas 10.3
- 42DearbornMichigan 10.3
- 42CantonOhio 10.3
- 42CalexicoCalifornia 10.3
- 42MercedCalifornia 10.3
- 48ColumbusGeorgia 10.2
- 48CarlislePennsylvania 10.2
- 50SacramentoCalifornia 10.1
- 51GreenvilleSouth Carolina 10.0
- 51BethlehemPennsylvania 10.0
- 51CorcoranCalifornia 10.0
- 54SpringfieldMassachusetts 9.9
- 54Los AngelesCalifornia 9.9
- 54RosevilleCalifornia 9.9
- 54ButteMontana 9.9
- 58JacksonMississippi 9.8
- 58ConroeTexas 9.8
- 58Bay CityMichigan 9.8
- 58KalamazooMichigan 9.8
- 58AltamontOregon 9.8
- 63WilmingtonDelaware 9.7
- 63SavannahGeorgia 9.7
- 63JeffersonvilleIndiana 9.7
- 63Valley StationKentucky 9.7
- 63PhiladelphiaPennsylvania 9.7
- 63EdinburgTexas 9.7
- 63Fort WorthTexas 9.7
- 63Mission BendTexas 9.7
- 63TurlockCalifornia 9.7
- 72Warner RobinsGeorgia 9.5
- 72LouisvilleKentucky 9.5
- 72St. LouisMissouri 9.5
- 72NorristownPennsylvania 9.5
- 72El PasoTexas 9.5
- 77TampaFlorida 9.4
- 77ValdostaGeorgia 9.4
- 77LexingtonNorth Carolina 9.4
- 77YorkPennsylvania 9.4
- 77DallasTexas 9.4
- 77West FargoNorth Dakota 9.4
- 77AllentownPennsylvania 9.4
- 84Little RockArkansas 9.3
- 84ChalmetteLouisiana 9.3
- 84SulphurLouisiana 9.3
- 84Calumet CityIllinois 9.3
- 84EwingNew Jersey 9.3
- 84YoungstownOhio 9.3
- 84PittsburghPennsylvania 9.3
- 91East Saint LouisIllinois 9.2
- 91MiddletownOhio 9.2
- 91ClintonIowa 9.2
- 91DublinOhio 9.2
- 91OntarioCalifornia 9.2
- 91SheridanWyoming 9.2
- 97GainesvilleGeorgia 9.1
- 97Oklahoma CityOklahoma 9.1
- 97SpartanburgSouth Carolina 9.1
- 97WaterburyConnecticut 9.1
- 97Long BeachCalifornia 9.1
- 97MedfordOregon 9.1
- 97OremUtah 9.1
- 104JeffersontownKentucky 9.0
- 104Shaker HeightsOhio 9.0
- 104Jurupa ValleyCalifornia 9.0
- 107CincinnatiOhio 8.9
- 107New York CityNew York 8.9
- 107BridgeportConnecticut 8.9
- 107RichmondCalifornia 8.9
- 107WoodlandCalifornia 8.9
- 107Yuba CityCalifornia 8.9
- 113Ferry PassFlorida 8.8
- 113SpringfieldMissouri 8.8
- 113Deer ParkTexas 8.8
- 113GreenfieldMassachusetts 8.8
- 113KeeneNew Hampshire 8.8
- 113JohnstownPennsylvania 8.8
- 113ThorntonColorado 8.8
- 120TrussvilleAlabama 8.7
- 120Palm BayFlorida 8.7
- 120LaredoTexas 8.7
- 120New HavenConnecticut 8.7
- 120Franklin ParkIllinois 8.7
- 120HammondIndiana 8.7
- 126Terre HauteIndiana 8.6
- 126YpsilantiMichigan 8.6
- 126New BrunswickNew Jersey 8.6
- 126State CollegePennsylvania 8.6
- 126WilkinsburgPennsylvania 8.6
- 131PrichardAlabama 8.5
- 131BearDelaware 8.5
- 131HattiesburgMississippi 8.5
- 131SpringfieldOhio 8.5
- 131LawtonOklahoma 8.5
- 131KnoxvilleTennessee 8.5
- 131Corpus ChristiTexas 8.5
- 131SaginawTexas 8.5
- 131East ChicagoIndiana 8.5
- 131Grand RapidsMichigan 8.5
- 131MinneapolisMinnesota 8.5
- 131Fort LeeNew Jersey 8.5
- 131ScrantonPennsylvania 8.5
- 131PawtucketRhode Island 8.5
- 131South MilwaukeeWisconsin 8.5
- 131MaderaCalifornia 8.5
- 131HillsboroOregon 8.5
- 148Saint MatthewsKentucky 8.4
- 148BartlettTennessee 8.4
- 148TrentonNew Jersey 8.4
- 148Eau ClaireWisconsin 8.4
- 148ChicoCalifornia 8.4
- 148OaklandCalifornia 8.4
- 154WichitaKansas 8.3
- 154ElizabethtownKentucky 8.3
- 154OwensboroKentucky 8.3
- 154ElktonMaryland 8.3
- 154PascagoulaMississippi 8.3
- 154BrownsvilleTexas 8.3
- 154NapervilleIllinois 8.3
- 154RutlandVermont 8.3
- 162Daytona BeachFlorida 8.2
- 162ValricoFlorida 8.2
- 162EvansvilleIndiana 8.2
- 162Saint PaulMinnesota 8.2
- 162MilwaukeeWisconsin 8.2
- 162WaukeshaWisconsin 8.2
- 162NogalesArizona 8.2
- 162LubbockTexas 8.2
- 162HerrimanUtah 8.2
- 171KennerLouisiana 8.1
- 171Rose HillVirginia 8.1
- 171Iowa CityIowa 8.1
- 171TaylorMichigan 8.1
- 171AppletonWisconsin 8.1
- 171Las VegasNevada 8.1
- 171KentWashington 8.1
- 178Palm CityFlorida 8.0
- 178AshlandKentucky 8.0
- 178EdmondOklahoma 8.0
- 178NashvilleTennessee 8.0
- 178College StationTexas 8.0
- 178AndersonIndiana 8.0
- 178La CrosseWisconsin 8.0
- 178FolsomCalifornia 8.0
- 178VallejoCalifornia 8.0
- 178TooeleUtah 8.0
- 188JacksonvilleFlorida 7.9
- 188WellingtonFlorida 7.9
- 188FlorenceSouth Carolina 7.9
- 188Saint AndrewsSouth Carolina 7.9
- 188HendersonvilleTennessee 7.9
- 188SpringfieldVirginia 7.9
- 188South BendIndiana 7.9
- 188McKeesportPennsylvania 7.9
- 196Belle GladeFlorida 7.8
- 196Deerfield BeachFlorida 7.8
- 196ScaggsvilleMaryland 7.8
- 196CharlotteNorth Carolina 7.8
- 196RaleighNorth Carolina 7.8
- 196La PorteTexas 7.8
- 196Cedar RapidsIowa 7.8
- 196JolietIllinois 7.8
- 196Port HuronMichigan 7.8
- 196HermitagePennsylvania 7.8
- 196MadisonWisconsin 7.8
- 196VancouverWashington 7.8
- 208MiamiFlorida 7.7
- 208SarasotaFlorida 7.7
- 208GreensboroNorth Carolina 7.7
- 208Winston-SalemNorth Carolina 7.7
- 212Fruit CoveFlorida 7.6
- 212Lake MaryFlorida 7.6
- 212DecaturIllinois 7.6
- 212GulfportMississippi 7.6
- 212FayettevilleNorth Carolina 7.6
- 212ColumbiaTennessee 7.6
- 212MolineIllinois 7.6
- 212RockfordIllinois 7.6
- 212AlbanyNew York 7.6
- 212PhoenixArizona 7.6
- 212Arroyo GrandeCalifornia 7.6
- 212El CajonCalifornia 7.6
- 212Fort CollinsColorado 7.6
- 225GainesvilleFlorida 7.5
- 225WestonFlorida 7.5
- 225DerbyKansas 7.5
- 225Ponca CityOklahoma 7.5
- 225HartfordConnecticut 7.5
- 225PortageIndiana 7.5
- 225JenisonMichigan 7.5
- 225BurnsvilleMinnesota 7.5
- 225Saint CloudMinnesota 7.5
- 225AkronOhio 7.5
- 225ClovisCalifornia 7.5
- 225PleasantonCalifornia 7.5
- 225San DiegoCalifornia 7.5
- 238DoverDelaware 7.4
- 238Safety HarborFlorida 7.4
- 238Kansas CityKansas 7.4
- 238ArnoldMissouri 7.4
- 238JacksonTennessee 7.4
- 238RichmondVirginia 7.4
- 238DavenportIowa 7.4
- 238CaryIllinois 7.4
- 238Des PlainesIllinois 7.4
- 238NorthbrookIllinois 7.4
- 238Apple ValleyMinnesota 7.4
- 238EriePennsylvania 7.4
- 238San LeandroCalifornia 7.4
- 238Santa BarbaraCalifornia 7.4
- 252PaducahKentucky 7.3
- 252ClemmonsNorth Carolina 7.3
- 252ZionIllinois 7.3
- 252WorcesterMassachusetts 7.3
- 252Saint MichaelMinnesota 7.3
- 252YumaArizona 7.3
- 252RiversideCalifornia 7.3
- 252SalinasCalifornia 7.3
- 252Spanish ForkUtah 7.3
- 261Delray BeachFlorida 7.2
- 261BrunswickGeorgia 7.2
- 261SpringfieldIllinois 7.2
- 261Fort ThomasKentucky 7.2
- 261Kansas CityMissouri 7.2
- 261University CityMissouri 7.2
- 261CharlestonWest Virginia 7.2
- 261GaryIndiana 7.2
- 261RochesterNew York 7.2
- 261BurlingtonVermont 7.2
- 271OlatheKansas 7.1
- 271South VinelandNew Jersey 7.1
- 271BostonMassachusetts 7.1
- 271WarrenOhio 7.1
- 271LivermoreCalifornia 7.1
- 271San FranciscoCalifornia 7.1
- 271Eagle PassTexas 7.1
- 271LongmontColorado 7.1
- 279WashingtonDistrict of Columbia 7.0
- 279BaltimoreMaryland 7.0
- 279New LondonConnecticut 7.0
- 279AnkenyIowa 7.0
- 279LafayetteIndiana 7.0
- 279BerkeleyCalifornia 7.0
- 279San JoseCalifornia 7.0
- 279Santa RosaCalifornia 7.0
- 279ReddingCalifornia 7.0
- 279EugeneOregon 7.0
- 279SeattleWashington 7.0
- 290BloomingtonIndiana 6.9
- 290North ChicopeeMassachusetts 6.9
- 290Jersey CityNew Jersey 6.9
- 290MedinaOhio 6.9
- 290OceansideCalifornia 6.9
- 290UkiahCalifornia 6.9
- 290MissoulaMontana 6.9
- 297DavieFlorida 6.8
- 297New AlbanyIndiana 6.8
- 297PittsfieldMassachusetts 6.8
- 297Weirton HeightsWest Virginia 6.8
- 297BrawleyCalifornia 6.8
- 297TigardOregon 6.8
- 303MorrisvilleNorth Carolina 6.7
- 303Toms RiverNew Jersey 6.7
- 303ClarksvilleTennessee 6.7
- 303CookevilleTennessee 6.7
- 303DyersburgTennessee 6.7
- 303MaryvilleTennessee 6.7
- 303BeltonTexas 6.7
- 303East HamptonVirginia 6.7
- 303WatertownSouth Dakota 6.7
- 303GilroyCalifornia 6.7
- 303Spanish SpringsNevada 6.7
- 314FishersIndiana 6.6
- 314TopekaKansas 6.6
- 314MasonOhio 6.6
- 314CharlottesvilleVirginia 6.6
- 314ChesapeakeVirginia 6.6
- 314KokomoIndiana 6.6
- 314LowellMassachusetts 6.6
- 314LimaOhio 6.6
- 314ProvidenceRhode Island 6.6
- 314San RafaelCalifornia 6.6
- 314RenoNevada 6.6
- 325ColumbusIndiana 6.5
- 325PleasantvilleNew Jersey 6.5
- 325HopewellVirginia 6.5
- 325SyracuseNew York 6.5
- 325VictorvilleCalifornia 6.5
- 330DurhamNorth Carolina 6.4
- 330BismarckNorth Dakota 6.4
- 332Saint JosephMissouri 6.3
- 332ClaytonNorth Carolina 6.3
- 332Roanoke RapidsNorth Carolina 6.3
- 332QuincyMassachusetts 6.3
- 332IndioCalifornia 6.3
- 337RoanokeVirginia 6.2
- 337BrocktonMassachusetts 6.2
- 337DenverColorado 6.2
- 337OdessaTexas 6.2
- 341LynnMassachusetts 6.1
- 341AlbuquerqueNew Mexico 6.1
- 341Carson CityNevada 6.1
- 341Rapid CitySouth Dakota 6.1
- 341KahuluiHawaii 6.1
- 346SuperiorWisconsin 6.0
- 346Santa CruzCalifornia 6.0
- 346Makakilo / Kapolei / Honokai HaleHawaii 6.0
- 349EdgewoodMaryland 5.9
- 349LemayMissouri 5.9
- 349Des MoinesIowa 5.9
- 349LewistonMaine 5.9
- 349GlendaleArizona 5.9
- 349TempeArizona 5.9
- 349PortlandOregon 5.9
- 349TacomaWashington 5.9
- 357IndependenceMissouri 5.8
- 357PortsmouthNew Hampshire 5.8
- 357AtascaderoCalifornia 5.8
- 357ParklandWashington 5.8
- 357RentonWashington 5.8
- 362South LaurelMaryland 5.7
- 362DuluthMinnesota 5.7
- 362DerryNew Hampshire 5.7
- 365RockvilleMaryland 5.6
- 365BangorMaine 5.6
- 365EllensburgWashington 5.6
- 368GreenvilleNorth Carolina 5.5
- 368ElkhartIndiana 5.5
- 368Casas AdobesArizona 5.5
- 371BellevueNebraska 5.4
- 371Grand JunctionColorado 5.4
- 371Apache JunctionArizona 5.4
- 374Redwood CityCalifornia 5.3
- 375HonoluluHawaii 5.1
- 376AshevilleNorth Carolina 5.0
- 376LaconiaNew Hampshire 5.0
- 376HelenaMontana 5.0
- 379CoventryRhode Island 4.9
- 379MesaArizona 4.9
- 379TemeculaCalifornia 4.9
- 379Sunland ParkNew Mexico 4.9
- 383AmarilloTexas 4.8
- 383CheyenneWyoming 4.8
- 383Rock SpringsWyoming 4.8
- 386Spring ValleyNevada 4.7
- 387PortlandMaine 4.6
- 387Sioux FallsSouth Dakota 4.6
- 387BillingsMontana 4.6
- 387BremertonWashington 4.6
- 391AberdeenSouth Dakota 4.4
- 391El CentroCalifornia 4.4
- 391Spokane ValleyWashington 4.4
- 394HollandMichigan 4.3
- 394EnterpriseNevada 4.3
- 394HendersonNevada 4.3
- 394Cedar CityUtah 4.3
- 398LibertyMissouri 4.2
- 399OmahaNebraska 4.1
- 399BellinghamWashington 4.1
- 401BrookingsSouth Dakota 4.0
- 401Thousand OaksCalifornia 4.0
- 403AnchorageAlaska 3.9
- 404Simi ValleyCalifornia 3.8
- 405NipomoCalifornia 3.7
- 406Ken CarylColorado 3.6
- 406Summerlin SouthNevada 3.6
- 408OrcuttCalifornia 3.5
- 409HollisterCalifornia 3.4
- 409LompocCalifornia 3.4
- 409HobbsNew Mexico 3.4
- 412Colorado SpringsColorado 3.3
- 412GilletteWyoming 3.3
- 414Boulder CityNevada 3.2
- 414HurricaneUtah 3.2
- 416BanningCalifornia 2.8
- 417FillmoreCalifornia 2.7
- 417HiloHawaii 2.7
- 419MesquiteNevada 2.5
- 420RidgecrestCalifornia 2.3
- 421CasperWyoming 1.7
- 422LaramieWyoming 1.4
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+
The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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
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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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