SmogRank / Countries / United States

Most polluted cities in United States

482 measured cities, last 24 hours; 23 above the WHO 24-hour guideline. Worst: Visalia at 86.0 µg/m³, #2 in the world.

316 good  165 moderate  1 unhealthy

  1. 1VisaliaCalifornia 86.05.7×
  2. 2Wheatonlow-cost sensorsIllinois 24.51.6×
  3. 3CalexicoCalifornia 22.21.5×
  4. 4Los AngelesCalifornia 21.31.4×
  5. 5HanfordCalifornia 19.31.3×
  6. 6WhittierCalifornia 19.11.3×
  7. 7Granite CityIllinois 18.21.2×
  8. 8FresnoCalifornia 17.11.1×
  9. 9San DiegoCalifornia 17.01.1×
  10. 10Wake Forestlow-cost sensorsNorth Carolina 16.91.1×
  11. 11ChattanoogaTennessee 16.61.1×
  12. 12PeoriaIllinois 16.61.1×
  13. 13ComptonCalifornia 16.31.1×
  14. 14Evanstonlow-cost sensorsIllinois 15.51.0×
  15. 15Franklin ParkIllinois 15.51.0×
  16. 16OregonOhio 15.51.0×
  17. 17CorcoranCalifornia 15.51.0×
  18. 18Mission ViejoCalifornia 15.51.0×
  19. 19Calumet CityIllinois 15.41.0×
  20. 20LimaOhio 15.31.0×
  21. 21DecaturIllinois 15.11.0×
  22. 22Upper AltonIllinois 15.11.0×
  23. 23Lake ElsinoreCalifornia 15.11.0×
  24. 24ToledoOhio 14.91.0×
  25. 25Ann Arborlow-cost sensorsMichigan 14.81.0×
  26. 26WyomingMichigan 14.71.0×
  27. 27MontgomeryAlabama 14.61.0×
  28. 28East Saint LouisIllinois 14.61.0×
  29. 29ClovisCalifornia 14.61.0×
  30. 30OceansideCalifornia 14.61.0×
  31. 31Long BeachCalifornia 14.51.0×
  32. 32DaytonOhio 14.10.9×
  33. 33PortsmouthOhio 14.10.9×
  34. 34BloomingtonIllinois 14.10.9×
  35. 35KnoxvilleTennessee 14.00.9×
  36. 36Evergreen Parklow-cost sensorsIllinois 13.90.9×
  37. 37HollandMichigan 13.80.9×
  38. 38Valley StationKentucky 13.70.9×
  39. 39AugustaGeorgia 13.50.9×
  40. 40IndianapolisIndiana 13.50.9×
  41. 41SpartanburgSouth Carolina 13.50.9×
  42. 42AthensGeorgia 13.30.9×
  43. 43ClevelandOhio 13.30.9×
  44. 44LouisvilleKentucky 13.20.9×
  45. 45Oak LawnIllinois 13.10.9×
  46. 46MuncieIndiana 13.10.9×
  47. 47Winston-SalemNorth Carolina 13.00.9×
  48. 48BrookfieldIllinois 13.00.9×
  49. 49Torrancelow-cost sensorsCalifornia 13.00.9×
  50. 50HuntsvilleAlabama 12.90.9×
  51. 51St. LouisMissouri 12.90.9×
  52. 52NorthbrookIllinois 12.90.9×
  53. 53BridgeviewIllinois 12.80.9×
  54. 54Yuba CityCalifornia 12.70.8×
  55. 55GreenvilleSouth Carolina 12.60.8×
  56. 56PortageIndiana 12.60.8×
  57. 57DearbornMichigan 12.60.8×
  58. 58GadsdenAlabama 12.50.8×
  59. 59EvansvilleIndiana 12.50.8×
  60. 60Terre HauteIndiana 12.50.8×
  61. 61ColumbusOhio 12.50.8×
  62. 62NashvilleTennessee 12.50.8×
  63. 63MercedCalifornia 12.50.8×
  64. 64Brookfieldlow-cost sensorsWisconsin 12.40.8×
  65. 65Saint MatthewsKentucky 12.30.8×
  66. 66ElizabethtownKentucky 12.20.8×
  67. 67ChicagoIllinois 12.20.8×
  68. 68KalamazooMichigan 12.20.8×
  69. 69ModestoCalifornia 12.20.8×
  70. 70MaderaCalifornia 12.10.8×
  71. 71West MifflinPennsylvania 12.00.8×
  72. 72Oconomowoclow-cost sensorsWisconsin 12.00.8×
  73. 73Thousand OaksCalifornia 12.00.8×
  74. 74BessemerAlabama 11.90.8×
  75. 75NapervilleIllinois 11.90.8×
  76. 76AtlantaGeorgia 11.80.8×
  77. 77ArnoldMissouri 11.80.8×
  78. 78MantecaCalifornia 11.80.8×
  79. 79DetroitMichigan 11.70.8×
  80. 80LebanonOhio 11.60.8×
  81. 81DoltonIllinois 11.60.8×
  82. 82RockfordIllinois 11.60.8×
  83. 83GaryIndiana 11.60.8×
  84. 84White OakOhio 11.50.8×
  85. 85BakersfieldCalifornia 11.50.8×
  86. 86CharlotteNorth Carolina 11.40.8×
  87. 87Elmwood ParkIllinois 11.40.8×
  88. 88Tularelow-cost sensorsCalifornia 11.40.8×
  89. 89JeffersontownKentucky 11.30.8×
  90. 90Jersey CityNew Jersey 11.30.8×
  91. 91PerrysburgOhio 11.30.8×
  92. 92DecaturAlabama 11.10.7×
  93. 93SpringfieldOhio 11.10.7×
  94. 94ClintonIowa 11.10.7×
  95. 95DavisCalifornia 11.10.7×
  96. 96Simi ValleyCalifornia 11.10.7×
  97. 97OwensboroKentucky 11.00.7×
  98. 98BartlettTennessee 11.00.7×
  99. 99TemeculaCalifornia 11.00.7×
  100. 100East ChicagoIndiana 10.90.7×
  101. 101ElginIllinois 10.80.7×
  102. 102Grand RapidsMichigan 10.80.7×
  103. 103University CityMissouri 10.70.7×
  104. 104MuscatineIowa 10.70.7×
  105. 105SouthfieldMichigan 10.70.7×
  106. 106ClemmonsNorth Carolina 10.60.7×
  107. 107RedfordMichigan 10.60.7×
  108. 108MedinaOhio 10.60.7×
  109. 109FillmoreCalifornia 10.60.7×
  110. 110ZionIllinois 10.50.7×
  111. 111KokomoIndiana 10.50.7×
  112. 112Arden-ArcadeCalifornia 10.50.7×
  113. 113BloomingtonIndiana 10.40.7×
  114. 114Abingtonlow-cost sensorsPennsylvania 10.40.7×
  115. 115PennsaukenNew Jersey 10.30.7×
  116. 116BristolVirginia 10.20.7×
  117. 117FlintMichigan 10.20.7×
  118. 118Santa Monicalow-cost sensorsCalifornia 10.20.7×
  119. 119MorrisvilleNorth Carolina 10.10.7×
  120. 120HammondIndiana 10.10.7×
  121. 121LafayetteIndiana 10.10.7×
  122. 122Little RockArkansas 10.00.7×
  123. 123AshevilleNorth Carolina 10.00.7×
  124. 124Fort LeeNew Jersey 10.00.7×
  125. 125South MilwaukeeWisconsin 10.00.7×
  126. 126NicholasvilleKentucky 9.90.7×
  127. 127AuroraIllinois 9.90.7×
  128. 128Port HuronMichigan 9.90.7×
  129. 129TaylorMichigan 9.90.7×
  130. 130Camdenlow-cost sensorsNew Jersey 9.80.7×
  131. 131Cleveland HeightsOhio 9.80.7×
  132. 132ElkhartIndiana 9.80.7×
  133. 133JenisonMichigan 9.80.7×
  134. 134LindenNew Jersey 9.80.7×
  135. 135San JoseCalifornia 9.80.7×
  136. 136MasonOhio 9.70.6×
  137. 137Lincoln ParkMichigan 9.70.6×
  138. 138CantonOhio 9.70.6×
  139. 139ParadiseCalifornia 9.70.6×
  140. 140GreensboroNorth Carolina 9.60.6×
  141. 141HuntingtonWest Virginia 9.60.6×
  142. 142Des PlainesIllinois 9.60.6×
  143. 143YpsilantiMichigan 9.60.6×
  144. 144TrentonNew Jersey 9.60.6×
  145. 145Warner RobinsGeorgia 9.50.6×
  146. 146GreenvilleNorth Carolina 9.50.6×
  147. 147ElizabethNew Jersey 9.50.6×
  148. 148WarrenOhio 9.50.6×
  149. 149PittsburghPennsylvania 9.50.6×
  150. 150TracyCalifornia 9.50.6×
  151. 151BaltimoreMaryland 9.40.6×
  152. 152Iowa CityIowa 9.40.6×
  153. 153YoungstownOhio 9.40.6×
  154. 154Prunedalelow-cost sensorsCalifornia 9.40.6×
  155. 155MaryvilleTennessee 9.30.6×
  156. 156New HavenConnecticut 9.30.6×
  157. 157NewarkNew Jersey 9.30.6×
  158. 158Fort ThomasKentucky 9.20.6×
  159. 159YorkPennsylvania 9.20.6×
  160. 160RichmondCalifornia 9.20.6×
  161. 161SacramentoCalifornia 9.20.6×
  162. 162Candler-McAfeeGeorgia 9.20.6×
  163. 163EastpointeMichigan 9.10.6×
  164. 164Shaker HeightsOhio 9.10.6×
  165. 165ScrantonPennsylvania 9.10.6×
  166. 166Columbia CityWashington 9.10.6×
  167. 167CookevilleTennessee 9.00.6×
  168. 168HernandoMississippi 8.90.6×
  169. 169CharlestonWest Virginia 8.90.6×
  170. 170ChicoCalifornia 8.90.6×
  171. 171OxnardCalifornia 8.90.6×
  172. 172MillcreekUtah 8.90.6×
  173. 173PainesvilleOhio 8.80.6×
  174. 174SteubenvilleOhio 8.80.6×
  175. 175Pasadenalow-cost sensorsCalifornia 8.80.6×
  176. 176WashingtonDistrict of Columbia 8.70.6×
  177. 177MolineIllinois 8.70.6×
  178. 178AkronOhio 8.70.6×
  179. 179AshlandKentucky 8.60.6×
  180. 180HarrisonburgVirginia 8.60.6×
  181. 181MagnaUtah 8.60.6×
  182. 182HickoryNorth Carolina 8.50.6×
  183. 183Short PumpVirginia 8.50.6×
  184. 184CaryIllinois 8.50.6×
  185. 185Upper Saint ClairPennsylvania 8.50.6×
  186. 186LewistonIdaho 8.50.6×
  187. 187ColumbusIndiana 8.40.6×
  188. 188FishersIndiana 8.40.6×
  189. 189PhiladelphiaPennsylvania 8.40.6×
  190. 190WeirtonWest Virginia 8.40.6×
  191. 191RichmondVirginia 8.30.6×
  192. 192LebanonPennsylvania 8.30.6×
  193. 193Great FallsMontana 8.30.6×
  194. 194Bay CityMichigan 8.20.5×
  195. 195HarrisburgPennsylvania 8.20.5×
  196. 196ScaggsvilleMaryland 8.10.5×
  197. 197ChambersburgPennsylvania 8.10.5×
  198. 198RochesterMinnesota 8.10.5×
  199. 199VictorvilleCalifornia 8.10.5×
  200. 200New York CityNew York 8.00.5×
  201. 201Delanolow-cost sensorsCalifornia 8.00.5×
  202. 202RenoNevada 8.00.5×
  203. 203ClarksvilleTennessee 7.90.5×
  204. 204SpringfieldVirginia 7.80.5×
  205. 205WaterburyConnecticut 7.80.5×
  206. 206RentonWashington 7.80.5×
  207. 207MinneapolisMinnesota 7.70.5×
  208. 208RochesterNew York 7.70.5×
  209. 209BensalemPennsylvania 7.70.5×
  210. 210McKeesportPennsylvania 7.70.5×
  211. 211ReadingPennsylvania 7.70.5×
  212. 212DoverDelaware 7.60.5×
  213. 213PatersonNew Jersey 7.60.5×
  214. 214HermitagePennsylvania 7.60.5×
  215. 215SeattleWashington 7.60.5×
  216. 216Kansas CityKansas 7.50.5×
  217. 217Cedar RapidsIowa 7.50.5×
  218. 218BlaineMinnesota 7.50.5×
  219. 219Huntington Beachlow-cost sensorsCalifornia 7.50.5×
  220. 220ConcordCalifornia 7.40.5×
  221. 221LincolnCalifornia 7.40.5×
  222. 222TacomaWashington 7.40.5×
  223. 223McDonoughGeorgia 7.30.5×
  224. 224Corpus ChristiTexas 7.30.5×
  225. 225HartfordConnecticut 7.30.5×
  226. 226Weirton HeightsWest Virginia 7.30.5×
  227. 227El CentroCalifornia 7.30.5×
  228. 228SavannahGeorgia 7.20.5×
  229. 229ChesapeakeVirginia 7.20.5×
  230. 230GilroyCalifornia 7.20.5×
  231. 231West Valley CityUtah 7.20.5×
  232. 232RoanokeVirginia 7.10.5×
  233. 233Florinlow-cost sensorsCalifornia 7.10.5×
  234. 234SunnysideWashington 7.10.5×
  235. 235AlbanyGeorgia 7.00.5×
  236. 236ValdostaGeorgia 7.00.5×
  237. 237Rose HillVirginia 7.00.5×
  238. 238Santa CruzCalifornia 7.00.5×
  239. 239New BrunswickNew Jersey 6.90.5×
  240. 240Redwood CityCalifornia 6.80.5×
  241. 241BearDelaware 6.70.4×
  242. 242WilmingtonDelaware 6.70.4×
  243. 243Live OakTexas 6.70.4×
  244. 244South VinelandNew Jersey 6.60.4×
  245. 245AnkenyIowa 6.60.4×
  246. 246New CityNew York 6.60.4×
  247. 247EriePennsylvania 6.60.4×
  248. 248TruckeeCalifornia 6.60.4×
  249. 249OcalaFlorida 6.50.4×
  250. 250SalemVirginia 6.50.4×
  251. 251GreenfieldMassachusetts 6.50.4×
  252. 252UticaNew York 6.50.4×
  253. 253RutlandVermont 6.50.4×
  254. 254FolsomCalifornia 6.50.4×
  255. 255BurnsvilleMinnesota 6.40.4×
  256. 256BethlehemPennsylvania 6.40.4×
  257. 257CarlislePennsylvania 6.40.4×
  258. 258Encinitaslow-cost sensorsCalifornia 6.40.4×
  259. 259Goletalow-cost sensorsCalifornia 6.40.4×
  260. 260UkiahCalifornia 6.40.4×
  261. 261Brigham CityUtah 6.40.4×
  262. 262West JordanUtah 6.40.4×
  263. 263PittsfieldMassachusetts 6.30.4×
  264. 264NewburghNew York 6.30.4×
  265. 265BrawleyCalifornia 6.30.4×
  266. 266IndioCalifornia 6.30.4×
  267. 267LancasterCalifornia 6.30.4×
  268. 268Cedar CityUtah 6.30.4×
  269. 269OremUtah 6.30.4×
  270. 270OlatheKansas 6.20.4×
  271. 271EdgewoodMaryland 6.20.4×
  272. 272SewellNew Jersey 6.20.4×
  273. 273DanburyConnecticut 6.20.4×
  274. 274MarquetteMichigan 6.20.4×
  275. 275SyracuseNew York 6.20.4×
  276. 276AppletonWisconsin 6.20.4×
  277. 277San LeandroCalifornia 6.20.4×
  278. 278TooeleUtah 6.20.4×
  279. 279NewarkDelaware 6.10.4×
  280. 280Ponte Vedra BeachFlorida 6.10.4×
  281. 281BrocktonMassachusetts 6.10.4×
  282. 282ShakopeeMinnesota 6.10.4×
  283. 283PortsmouthNew Hampshire 6.10.4×
  284. 284White PlainsNew York 6.10.4×
  285. 285Green BayWisconsin 6.10.4×
  286. 286Los Banoslow-cost sensorsCalifornia 6.10.4×
  287. 287BremertonWashington 6.10.4×
  288. 288ParklandWashington 6.10.4×
  289. 289Apple ValleyMinnesota 6.00.4×
  290. 290KentWashington 6.00.4×
  291. 291MarysvilleWashington 6.00.4×
  292. 292ThorntonColorado 5.90.4×
  293. 293Port AngelesWashington 5.90.4×
  294. 294Lawrencelow-cost sensorsKansas 5.80.4×
  295. 295Oxon Hill-GlassmanorMaryland 5.80.4×
  296. 296RandolphNew Jersey 5.80.4×
  297. 297Hunt ValleyMaryland 5.70.4×
  298. 298LowellMassachusetts 5.70.4×
  299. 299AlbanyNew York 5.70.4×
  300. 300HolbrookNew York 5.70.4×
  301. 301NorristownPennsylvania 5.70.4×
  302. 302ProvidenceRhode Island 5.70.4×
  303. 303Spanish SpringsNevada 5.70.4×
  304. 304LaceyWashington 5.70.4×
  305. 305Kansas CityMissouri 5.60.4×
  306. 306Saint JosephMissouri 5.60.4×
  307. 307Toms RiverNew Jersey 5.60.4×
  308. 308NampaIdaho 5.60.4×
  309. 309Mount VernonWashington 5.60.4×
  310. 310Picnic Point-North LynnwoodWashington 5.60.4×
  311. 311PawtucketRhode Island 5.50.4×
  312. 312SalinasCalifornia 5.50.4×
  313. 313DenverColorado 5.50.4×
  314. 314ReddingCalifornia 5.50.4×
  315. 315MoscowIdaho 5.50.4×
  316. 316WaterlooIowa 5.40.4×
  317. 317Fort LauderdaleFlorida 5.30.4×
  318. 318DallasTexas 5.30.4×
  319. 319BostonMassachusetts 5.30.4×
  320. 320LynnMassachusetts 5.30.4×
  321. 321WorcesterMassachusetts 5.30.4×
  322. 322Las VegasNevada 5.30.4×
  323. 323Coos BayOregon 5.30.4×
  324. 324TigardOregon 5.30.4×
  325. 325LeawoodKansas 5.20.3×
  326. 326AustinTexas 5.20.3×
  327. 327New LondonConnecticut 5.20.3×
  328. 328MilfordMassachusetts 5.20.3×
  329. 329Palo Altolow-cost sensorsCalifornia 5.20.3×
  330. 330Coeur d'AleneIdaho 5.20.3×
  331. 331HerrimanUtah 5.20.3×
  332. 332Salt Lake CityUtah 5.20.3×
  333. 333AugustaMaine 5.10.3×
  334. 334Sioux FallsSouth Dakota 5.10.3×
  335. 335AtascaderoCalifornia 5.10.3×
  336. 336LittletonColorado 5.10.3×
  337. 337PocatelloIdaho 5.10.3×
  338. 338Twin FallsIdaho 5.10.3×
  339. 339BurienWashington 5.10.3×
  340. 340MonroeLouisiana 5.00.3×
  341. 341Des MoinesIowa 5.00.3×
  342. 342HaverhillMassachusetts 5.00.3×
  343. 343Saint MichaelMinnesota 5.00.3×
  344. 344Arroyo GrandeCalifornia 5.00.3×
  345. 345WichitaKansas 4.90.3×
  346. 346FraminghamMassachusetts 4.90.3×
  347. 347QuincyMassachusetts 4.90.3×
  348. 348CentraliaWashington 4.90.3×
  349. 349Delray BeachFlorida 4.80.3×
  350. 350Deer ParkTexas 4.80.3×
  351. 351PortlandMaine 4.80.3×
  352. 352PhoenixArizona 4.80.3×
  353. 353Seasidelow-cost sensorsCalifornia 4.80.3×
  354. 354Windsorlow-cost sensorsCalifornia 4.80.3×
  355. 355GainesvilleFlorida 4.70.3×
  356. 356JacksonvilleFlorida 4.70.3×
  357. 357South LaurelMaryland 4.70.3×
  358. 358HoustonTexas 4.70.3×
  359. 359BrookingsSouth Dakota 4.70.3×
  360. 360HollisterCalifornia 4.60.3×
  361. 361North Creeklow-cost sensorsWashington 4.60.3×
  362. 362ValricoFlorida 4.50.3×
  363. 363TopekaKansas 4.50.3×
  364. 364Middletonlow-cost sensorsWisconsin 4.50.3×
  365. 365TucsonArizona 4.50.3×
  366. 366South San Franciscolow-cost sensorsCalifornia 4.50.3×
  367. 367El PasoTexas 4.50.3×
  368. 368SocorroTexas 4.50.3×
  369. 369LongmontColorado 4.50.3×
  370. 370KahuluiHawaii 4.50.3×
  371. 371HonoluluHawaii 4.50.3×
  372. 372LibertyMissouri 4.40.3×
  373. 373BurlingtonVermont 4.40.3×
  374. 374OaklandCalifornia 4.40.3×
  375. 375RidgecrestCalifornia 4.40.3×
  376. 376BellevueWashington 4.40.3×
  377. 377LongviewWashington 4.40.3×
  378. 378PullmanWashington 4.40.3×
  379. 379Fruit CoveFlorida 4.30.3×
  380. 380SuperiorWisconsin 4.30.3×
  381. 381HurricaneUtah 4.30.3×
  382. 382Fort CollinsColorado 4.30.3×
  383. 383MedfordOregon 4.30.3×
  384. 384BountifulUtah 4.30.3×
  385. 385MadisonWisconsin 4.20.3×
  386. 386Salmon CreekWashington 4.20.3×
  387. 387BellevueNebraska 4.10.3×
  388. 388San RafaelCalifornia 4.10.3×
  389. 389HermistonOregon 4.10.3×
  390. 390North OgdenUtah 4.10.3×
  391. 391Walla WallaWashington 4.10.3×
  392. 392HagerstownMaryland 4.00.3×
  393. 393HattiesburgMississippi 4.00.3×
  394. 394MooreOklahoma 4.00.3×
  395. 395AshlandOregon 4.00.3×
  396. 396SheridanWyoming 4.00.3×
  397. 397DerbyKansas 3.90.3×
  398. 398TulsaOklahoma 3.90.3×
  399. 399Saint CloudMinnesota 3.90.3×
  400. 400GlendaleArizona 3.90.3×
  401. 401NipomoCalifornia 3.90.3×
  402. 402Sunland ParkNew Mexico 3.90.3×
  403. 403EnterpriseNevada 3.90.3×
  404. 404Spring ValleyNevada 3.90.3×
  405. 405AberdeenWashington 3.90.3×
  406. 406Monroelow-cost sensorsWashington 3.90.3×
  407. 407BrunswickGeorgia 3.80.3×
  408. 408McAlesterOklahoma 3.80.3×
  409. 409Casas AdobesArizona 3.80.3×
  410. 410YumaArizona 3.80.3×
  411. 411WindsorColorado 3.80.3×
  412. 412PortlandOregon 3.80.3×
  413. 413TampaFlorida 3.60.2×
  414. 414WellingtonFlorida 3.60.2×
  415. 415LawtonOklahoma 3.60.2×
  416. 416BangorMaine 3.60.2×
  417. 417LewistonMaine 3.60.2×
  418. 418DuluthMinnesota 3.60.2×
  419. 419Carson CityNevada 3.60.2×
  420. 420EugeneOregon 3.60.2×
  421. 421Spokane ValleyWashington 3.60.2×
  422. 422CasperWyoming 3.60.2×
  423. 423HiloHawaii 3.60.2×
  424. 424BadgerAlaska 3.60.2×
  425. 425Safety HarborFlorida 3.50.2×
  426. 426EdmondOklahoma 3.50.2×
  427. 427LaconiaNew Hampshire 3.50.2×
  428. 428Idaho FallsIdaho 3.50.2×
  429. 429MilwaukieOregon 3.50.2×
  430. 430Moses LakeWashington 3.50.2×
  431. 431LafayetteLouisiana 3.40.2×
  432. 432Santa RosaCalifornia 3.40.2×
  433. 433AlbanyOregon 3.40.2×
  434. 434The DallesOregon 3.40.2×
  435. 435Bothelllow-cost sensorsWashington 3.40.2×
  436. 436Four CornersFlorida 3.40.2×
  437. 437East LakeFlorida 3.30.2×
  438. 438Oak RidgeFlorida 3.30.2×
  439. 439BoiseIdaho 3.30.2×
  440. 440BeavertonOregon 3.30.2×
  441. 441VancouverWashington 3.30.2×
  442. 442BartowFlorida 3.20.2×
  443. 443OmahaNebraska 3.20.2×
  444. 444MesquiteNevada 3.20.2×
  445. 445Oregon CityOregon 3.20.2×
  446. 446Summerlin SouthNevada 3.20.2×
  447. 447Cañon CityColorado 3.10.2×
  448. 448HillsboroOregon 3.10.2×
  449. 449PascagoulaMississippi 3.00.2×
  450. 450TempeArizona 3.00.2×
  451. 451AnacortesWashington 3.00.2×
  452. 452CheyenneWyoming 3.00.2×
  453. 453Inglewood-Finn Hilllow-cost sensorsWashington 3.00.2×
  454. 454Green ValleyArizona 2.90.2×
  455. 455South ValleyNew Mexico 2.90.2×
  456. 456Boulder CityNevada 2.90.2×
  457. 457OrlandoFlorida 2.80.2×
  458. 458Kirklandlow-cost sensorsWashington 2.80.2×
  459. 459PascoWashington 2.80.2×
  460. 460WatertownSouth Dakota 2.70.2×
  461. 461EllensburgWashington 2.70.2×
  462. 462SpokaneWashington 2.70.2×
  463. 463West FargoNorth Dakota 2.50.2×
  464. 464BendOregon 2.50.2×
  465. 465McMinnvilleOregon 2.40.2×
  466. 466WenatcheeWashington 2.10.1×
  467. 467CorvallisOregon 2.00.1×
  468. 468RedmondOregon 2.00.1×
  469. 469Newtonlow-cost sensorsMassachusetts 1.90.1×
  470. 470AlbuquerqueNew Mexico 1.90.1×
  471. 471Rio RanchoNew Mexico 1.80.1×
  472. 472DallasOregon 1.80.1×
  473. 473YakimaWashington 1.80.1×
  474. 474Tri-CitiesWashington 1.70.1×
  475. 475Lakewoodlow-cost sensorsColorado 1.60.1×
  476. 476FairbanksAlaska 1.60.1×
  477. 477Union Hill-Novelty Hilllow-cost sensorsWashington 1.50.1×
  478. 478JacksonMississippi 1.20.1×
  479. 479AberdeenSouth Dakota 1.20.1×
  480. 480Parkerlow-cost sensorsColorado 0.80.1×
  481. 481Loganlow-cost sensorsUtah 0.20.0×
  482. 482Oro Valleylow-cost sensorsArizona 0.00.0×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Estimated: cities without a monitor

United States cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Brooklyn≈ 4 µg/m³Good
Queens≈ 4 µg/m³Good
Manhattan≈ 4 µg/m³Good
The Bronx≈ 4 µg/m³Good
Memphis≈ 7 µg/m³Good
Staten Island≈ 4 µg/m³Good
Virginia Beach≈ 4 µg/m³Good
Aurora≈ 5 µg/m³Good
Lexington≈ 5 µg/m³Good
Santa Ana≈ 9 µg/m³Good
Meads≈ 5 µg/m³Good
Plano≈ 9 µg/m³Moderate
Chandler≈ 7 µg/m³Good
Irvine≈ 9 µg/m³Good
Gilbert≈ 4 µg/m³Good
Norfolk≈ 4 µg/m³Good
Hialeah≈ 6 µg/m³Good
Garland≈ 10 µg/m³Moderate
Scottsdale≈ 7 µg/m³Good
Irving≈ 9 µg/m³Moderate
North Las Vegas≈ 4 µg/m³Good
Fremont≈ 10 µg/m³Moderate
Paradise≈ 4 µg/m³Good
San Bernardino≈ 9 µg/m³Good
Arlington≈ 4 µg/m³Good
Moreno Valley≈ 9 µg/m³Good
Yonkers≈ 4 µg/m³Good
Glendale≈ 14 µg/m³Moderate
Cypress≈ 8 µg/m³Good
Peoria≈ 6 µg/m³Good
Sunrise Manor≈ 3 µg/m³Good
Grand Prairie≈ 9 µg/m³Moderate
Overland Park≈ 8 µg/m³Good
Newport News≈ 4 µg/m³Good
Mobile≈ 8 µg/m³Good
Garden Grove≈ 8 µg/m³Good
Rancho Cucamonga≈ 12 µg/m³Moderate
Cape Coral≈ 5 µg/m³Good
Pembroke Pines≈ 6 µg/m³Good
Murfreesboro≈ 5 µg/m³Good

Use this board

SmogRank, most polluted cities in United States, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/us.

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Regions

Alabama 8Alaska 3Arizona 15Arkansas 4California 103Colorado 18Connecticut 6Delaware 4District of Columbia 1Florida 36Georgia 14Hawaii 4Idaho 9Illinois 33Indiana 21Iowa 9Kansas 7Kentucky 11Louisiana 8Maine 4Maryland 9Massachusetts 15Michigan 18Minnesota 12Mississippi 5Missouri 10Montana 6Nebraska 4Nevada 10New Hampshire 4New Jersey 18New Mexico 6New York 10North Carolina 15North Dakota 2Ohio 27Oklahoma 9Oregon 27Pennsylvania 25Rhode Island 3South Carolina 4South Dakota 5Tennessee 12Texas 31Utah 15Vermont 2Virginia 13Washington 41West Virginia 3Wisconsin 10Wyoming 5

Measured cities in each region (30 days).

Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.