SmogRank / World / United States / April 2026

Most polluted cities in United States, April 2026

665 cities in United States ranked by their average PM2.5 over the 30 days. Worst: Calexico at 18.9 µg/m³, #422 of 2,573 cities in the world. Cleanest: Encinitas at 1.4. A city needs measurements on 70% of the days to be ranked.

← Calexico 18.9 µg/m³ 20 µg/m³0
Every city in United States ranked for April 2026, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1CalexicoCalifornia
    2
  2. 2LaredoTexas
    2
  3. 3MaconGeorgia
    2
  4. 4El PasoTexas
    2
  5. 5ValdostaGeorgia
    2
  6. 5Eagle PassTexas
    2
  7. 7Corpus ChristiTexas
    2
  8. 7Port ArthurTexas
    2
  9. 9MissionTexas
    2
  10. 10LibertyMissouri
    2
  11. 11AugustaGeorgia
    2
  12. 11Jurupa ValleyCalifornia
    2
  13. 13AustinTexas
    2
  14. 14SavannahGeorgia
    2
  15. 15BrunswickGeorgia
    2
  16. 15San AntonioTexas
    2
  17. 17EdinburgTexas
    2
  18. 18BaytownTexas
    2
  19. 19Deer ParkTexas
    2
  20. 20Wake Forestlow-cost sensorsNorth Carolina
    2
  21. 21Warner RobinsGeorgia
    2
  22. 22ColumbusGeorgia
    2
  23. 22BrownsvilleTexas
    2
  24. 22Live OakTexas
    2
  25. 22BrookfieldIllinois
    2
  26. 26Redmondlow-cost sensorsWashington
    2
  27. 27Candler-McAfeeGeorgia
    2
  28. 28West MemphisArkansas
    2
  29. 29PortsmouthOhio
    2
  30. 30DallasTexas
    2
  31. 31ChattanoogaTennessee
    2
  32. 31RiversideCalifornia
    2
  33. 33Little RockArkansas
    1
  34. 33TopekaKansas
    1
  35. 33WichitaKansas
    1
  36. 33SpartanburgSouth Carolina
    1
  37. 33HoustonTexas
    1
  38. 38ShreveportLouisiana
    1
  39. 38FayettevilleNorth Carolina
    1
  40. 38FlorenceSouth Carolina
    1
  41. 38San MarcosTexas
    1
  42. 42AthensGeorgia
    1
  43. 42College StationTexas
    1
  44. 42Fort WorthTexas
    1
  45. 45AlbanyGeorgia
    1
  46. 45PhiladelphiaPennsylvania
    1
  47. 47BirminghamAlabama
    1
  48. 47GadsdenAlabama
    1
  49. 47AshlandKentucky
    1
  50. 50MiddletownOhio
    1
  51. 50CorsicanaTexas
    1
  52. 50PasadenaTexas
    1
  53. 50Sunland ParkNew Mexico
    1
  54. 54BeltonTexas
    1
  55. 54DentonTexas
    1
  56. 56TallahasseeFlorida
    1
  57. 56AtlantaGeorgia
    1
  58. 56DerbyKansas
    1
  59. 56HattiesburgMississippi
    1
  60. 56Saint AndrewsSouth Carolina
    1
  61. 56Cedar ParkTexas
    1
  62. 56TaylorTexas
    1
  63. 56TexarkanaTexas
    1
  64. 56WaterlooIowa
    1
  65. 65SpringdaleArkansas
    1
  66. 65JacksonMississippi
    1
  67. 67ConroeTexas
    1
  68. 67SaginawTexas
    1
  69. 69Ponte Vedra BeachFlorida
    1
  70. 69LouisvilleKentucky
    1
  71. 69MorrisvilleNorth Carolina
    1
  72. 69PflugervilleTexas
    1
  73. 69WyomingMichigan
    1
  74. 69SocorroTexas
    1
  75. 75TulsaOklahoma
    1
  76. 75North CharlestonSouth Carolina
    1
  77. 77HuntsvilleAlabama
    1
  78. 77LawrencevilleGeorgia
    1
  79. 77JeffersonvilleIndiana
    1
  80. 77CharlotteNorth Carolina
    1
  81. 77NorwoodOhio
    1
  82. 77GreenvilleSouth Carolina
    1
  83. 77East RidgeTennessee
    1
  84. 77GalvestonTexas
    1
  85. 77CharlottesvilleVirginia
    1
  86. 86JacksonvilleFlorida
    1
  87. 86Valley StationKentucky
    1
  88. 86LexingtonNorth Carolina
    1
  89. 86Oklahoma CityOklahoma
    1
  90. 86HendersonvilleTennessee
    1
  91. 86KnoxvilleTennessee
    1
  92. 86BrookingsSouth Dakota
    1
  93. 93MontgomeryAlabama
    1
  94. 93MooreOklahoma
    1
  95. 93YorkPennsylvania
    1
  96. 93MaryvilleTennessee
    1
  97. 93ComptonCalifornia
    1
  98. 93FontanaCalifornia
    1
  99. 99OcalaFlorida
    1
  100. 99OwensboroKentucky
    1
  101. 99RaleighNorth Carolina
    1
  102. 99Missouri CityTexas
    1
  103. 99TucsonArizona
    1
  104. 99WhittierCalifornia
    1
  105. 99Great FallsMontana
    1
  106. 99MidwayFlorida
    1
  107. 107ColumbiaTennessee
    1
  108. 107WestervilleOhio
    1
  109. 109Kendale LakesFlorida
    1
  110. 109Baton RougeLouisiana
    1
  111. 109ClaytonNorth Carolina
    1
  112. 109Winston-SalemNorth Carolina
    1
  113. 109CharlestonWest Virginia
    1
  114. 114DecaturAlabama
    1
  115. 114Granite CityIllinois
    1
  116. 114EvansvilleIndiana
    1
  117. 114New AlbanyIndiana
    1
  118. 114SulphurLouisiana
    1
  119. 114BartlettTennessee
    1
  120. 114La PorteTexas
    1
  121. 121TrussvilleAlabama
    1
  122. 121MonroeLouisiana
    1
  123. 121BaltimoreMaryland
    1
  124. 121Mission BendTexas
    1
  125. 121MankatoMinnesota
    1
  126. 126BessemerAlabama
    1
  127. 126PrichardAlabama
    1
  128. 126Ponca CityOklahoma
    1
  129. 126PeoriaIllinois
    1
  130. 126ToledoOhio
    1
  131. 126BakersfieldCalifornia
    1
  132. 126VisaliaCalifornia
    1
  133. 133VeniceFlorida
    1
  134. 133IndianapolisIndiana
    1
  135. 133Saint JosephMissouri
    1
  136. 133GreenvilleNorth Carolina
    1
  137. 133MasonOhio
    1
  138. 133JacksonTennessee
    1
  139. 133MuscatineIowa
    1
  140. 133DoltonIllinois
    1
  141. 133HammondIndiana
    1
  142. 133LancasterPennsylvania
    1
  143. 133LebanonPennsylvania
    1
  144. 133AnaheimCalifornia
    1
  145. 133Los AngelesCalifornia
    1
  146. 146ChesapeakeVirginia
    1
  147. 146HarrisonburgVirginia
    1
  148. 146HuntingtonWest Virginia
    1
  149. 146Calumet CityIllinois
    1
  150. 146ClevelandOhio
    1
  151. 146SteubenvilleOhio
    1
  152. 152McDonoughGeorgia
    1
  153. 152HernandoMississippi
    1
  154. 152ClemmonsNorth Carolina
    1
  155. 152CincinnatiOhio
    1
  156. 152ColumbusOhio
    1
  157. 152SpringfieldOhio
    1
  158. 152Fort WayneIndiana
    1
  159. 152PerrysburgOhio
    1
  160. 152West MifflinPennsylvania
    1
  161. 152Long BeachCalifornia
    1
  162. 162Ferry PassFlorida
    1
  163. 162MiamiFlorida
    1
  164. 162GreensboroNorth Carolina
    1
  165. 162HickoryNorth Carolina
    1
  166. 162EdmondOklahoma
    1
  167. 162JenksOklahoma
    1
  168. 162BridgeviewIllinois
    1
  169. 162RedfordMichigan
    1
  170. 162OregonOhio
    1
  171. 171Bonita SpringsFlorida
    1
  172. 171Fort LauderdaleFlorida
    1
  173. 171Fruit CoveFlorida
    1
  174. 171Palm CityFlorida
    1
  175. 171GainesvilleGeorgia
    1
  176. 171JeffersontownKentucky
    1
  177. 171Saint MatthewsKentucky
    1
  178. 171New OrleansLouisiana
    1
  179. 171DaytonOhio
    1
  180. 171Franklin ParkIllinois
    1
  181. 171BensalemPennsylvania
    1
  182. 182GainesvilleFlorida
    1
  183. 182TampaFlorida
    1
  184. 182ValricoFlorida
    1
  185. 182AshevilleNorth Carolina
    1
  186. 182LawtonOklahoma
    1
  187. 182DyersburgTennessee
    1
  188. 182FlintMichigan
    1
  189. 182NipomoCalifornia
    1
  190. 182San DiegoCalifornia
    1
  191. 182HobbsNew Mexico
    1
  192. 192Belle GladeFlorida
    1
  193. 192West PensacolaFlorida
    1
  194. 192GulfportMississippi
    1
  195. 192Roanoke RapidsNorth Carolina
    1
  196. 192CookevilleTennessee
    1
  197. 192Evanstonlow-cost sensorsIllinois
    1
  198. 192PhoenixArizona
    1
  199. 192Picnic Point-North LynnwoodWashington
    1
  200. 200St. PetersburgFlorida
    1
  201. 200BloomingtonIndiana
    1
  202. 200ElizabethtownKentucky
    1
  203. 200EssexMaryland
    1
  204. 200PascagoulaMississippi
    1
  205. 200Toms RiverNew Jersey
    1
  206. 200LebanonOhio
    1
  207. 200McAlesterOklahoma
    1
  208. 200Fort DodgeIowa
    1
  209. 200EwingNew Jersey
    1
  210. 200Chula VistaCalifornia
    1
  211. 200Lake ElsinoreCalifornia
    1
  212. 200MercedCalifornia
    1
  213. 200OdessaTexas
    1
  214. 214WashingtonDistrict of Columbia
    1
  215. 214Oak RidgeFlorida
    1
  216. 214Pompano BeachFlorida
    1
  217. 214NicholasvilleKentucky
    1
  218. 214ClarksvilleTennessee
    1
  219. 214ReadingPennsylvania
    1
  220. 214WatertownSouth Dakota
    1
  221. 221HomesteadFlorida
    1
  222. 221JasperIndiana
    1
  223. 221PennsaukenNew Jersey
    1
  224. 221East HamptonVirginia
    1
  225. 221HopewellVirginia
    1
  226. 221ClintonIowa
    1
  227. 221Des PlainesIllinois
    1
  228. 221HarrisburgPennsylvania
    1
  229. 221Casas AdobesArizona
    1
  230. 221NogalesArizona
    1
  231. 221IndioCalifornia
    1
  232. 221PortervilleCalifornia
    1
  233. 233PaducahKentucky
    1
  234. 233Fort MyersFlorida
    1
  235. 233OlatheKansas
    1
  236. 233Lexington-FayetteKentucky
    1
  237. 233ChalmetteLouisiana
    1
  238. 233KennerLouisiana
    1
  239. 233SpringfieldMissouri
    1
  240. 233DurhamNorth Carolina
    1
  241. 233ConwaySouth Carolina
    1
  242. 233RichmondVirginia
    1
  243. 233Elmwood ParkIllinois
    1
  244. 233AndersonIndiana
    1
  245. 233East ChicagoIndiana
    1
  246. 233ElkhartIndiana
    1
  247. 233LafayetteIndiana
    1
  248. 233Royal Oaklow-cost sensorsMichigan
    1
  249. 233New York CityNew York
    1
  250. 233OaklandCalifornia
    1
  251. 251Fort SmithArkansas
    1
  252. 251East Saint LouisIllinois
    1
  253. 251Upper AltonIllinois
    1
  254. 251LafayetteLouisiana
    1
  255. 251Atlantic CityNew Jersey
    1
  256. 251RoanokeVirginia
    1
  257. 251Short PumpVirginia
    1
  258. 251JolietIllinois
    1
  259. 251MuncieIndiana
    1
  260. 251South BendIndiana
    1
  261. 251CarlislePennsylvania
    1
  262. 251Arroyo GrandeCalifornia
    1
  263. 251CorcoranCalifornia
    1
  264. 251Mission ViejoCalifornia
    1
  265. 265WilmingtonDelaware
    1
  266. 265Daytona BeachFlorida
    1
  267. 265Safety HarborFlorida
    1
  268. 265Columbialow-cost sensorsMissouri
    1
  269. 265St. LouisMissouri
    1
  270. 265SalemVirginia
    1
  271. 265ChicagoIllinois
    1
  272. 265ElizabethNew Jersey
    1
  273. 265CantonOhio
    1
  274. 265DublinOhio
    1
  275. 265WarrenOhio
    1
  276. 265VictorvilleCalifornia
    1
  277. 265Columbia CityWashington
    1
  278. 278SarasotaFlorida
    1
  279. 278SpringfieldVirginia
    1
  280. 278Oak LawnIllinois
    1
  281. 278PortageIndiana
    1
  282. 278DearbornMichigan
    1
  283. 278DetroitMichigan
    1
  284. 278HolbrookNew York
    1
  285. 278Casa GrandeArizona
    1
  286. 278PowayCalifornia
    1
  287. 278San FranciscoCalifornia
    1
  288. 278Santa BarbaraCalifornia
    1
  289. 278Apache JunctionArizona
    1
  290. 278SeattleWashington
    1
  291. 278Four CornersFlorida
    1
  292. 292Deerfield BeachFlorida
    1
  293. 292Delray BeachFlorida
    1
  294. 292OrlandoFlorida
    1
  295. 292DecaturIllinois
    1
  296. 292Kansas CityKansas
    1
  297. 292South VinelandNew Jersey
    1
  298. 292KingsportTennessee
    1
  299. 292Cleveland HeightsOhio
    1
  300. 292New HavenConnecticut
    1
  301. 292AuroraIllinois
    1
  302. 292ChampaignIllinois
    1
  303. 292NapervilleIllinois
    1
  304. 292Michigan CityIndiana
    1
  305. 292Lincoln ParkMichigan
    1
  306. 292Jersey CityNew Jersey
    1
  307. 292BuffaloNew York
    1
  308. 292PittsburghPennsylvania
    1
  309. 292YumaArizona
    1
  310. 292BrawleyCalifornia
    1
  311. 292San Luis ObispoCalifornia
    1
  312. 292LewistonIdaho
    1
  313. 313Hunt ValleyMaryland
    1
  314. 313AshburnVirginia
    1
  315. 313AnkenyIowa
    1
  316. 313ElginIllinois
    1
  317. 313Fort LeeNew Jersey
    1
  318. 313WilkinsburgPennsylvania
    1
  319. 313Oconomowoclow-cost sensorsWisconsin
    1
  320. 313BridgeportConnecticut
    1
  321. 313TempeArizona
    1
  322. 313Delanolow-cost sensorsCalifornia
    1
  323. 313El CajonCalifornia
    1
  324. 313OceansideCalifornia
    1
  325. 313South Lake TahoeCalifornia
    1
  326. 313UkiahCalifornia
    1
  327. 327Fort ThomasKentucky
    1
  328. 327White OakOhio
    1
  329. 327Rose HillVirginia
    1
  330. 327RockfordIllinois
    1
  331. 327BrocktonMassachusetts
    1
  332. 327KalamazooMichigan
    1
  333. 327LindenNew Jersey
    1
  334. 327PatersonNew Jersey
    1
  335. 327WeirtonWest Virginia
    1
  336. 327BurbankCalifornia
    1
  337. 327TacomaWashington
    1
  338. 338East LakeFlorida
    1
  339. 338WellingtonFlorida
    1
  340. 338Des MoinesIowa
    1
  341. 338AkronOhio
    1
  342. 338MedinaOhio
    1
  343. 338YoungstownOhio
    1
  344. 338NorristownPennsylvania
    1
  345. 338El CentroCalifornia
    1
  346. 338FresnoCalifornia
    1
  347. 338SalinasCalifornia
    1
  348. 338Santa ClaritaCalifornia
    1
  349. 338WoodlandCalifornia
    1
  350. 338BendOregon
    1
  351. 351DavieFlorida
    1
  352. 351ArnoldMissouri
    1
  353. 351University CityMissouri
    1
  354. 351ChesterPennsylvania
    1
  355. 351DavenportIowa
    1
  356. 351MolineIllinois
    1
  357. 351Bay CityMichigan
    1
  358. 351PainesvilleOhio
    1
  359. 351Shaker HeightsOhio
    1
  360. 351ClovisCalifornia
    1
  361. 351Santa CruzCalifornia
    1
  362. 351NampaIdaho
    1
  363. 363Palm BayFlorida
    1
  364. 363PleasantvilleNew Jersey
    1
  365. 363SewellNew Jersey
    1
  366. 363Iowa CityIowa
    1
  367. 363FraminghamMassachusetts
    1
  368. 363Grand RapidsMichigan
    1
  369. 363MinneapolisMinnesota
    1
  370. 363McKeesportPennsylvania
    1
  371. 363MesaArizona
    1
  372. 363San JoseCalifornia
    1
  373. 363Simi ValleyCalifornia
    1
  374. 363StocktonCalifornia
    1
  375. 363ThorntonColorado
    1
  376. 363RandolphNew Jersey
    1
  377. 377BearDelaware
    1
  378. 377SpringfieldIllinois
    1
  379. 377ScaggsvilleMaryland
    1
  380. 377RaymoreMissouri
    1
  381. 377New LondonConnecticut
    1
  382. 377BloomingtonIllinois
    1
  383. 377PortlandMaine
    1
  384. 377BurnsvilleMinnesota
    1
  385. 377RochesterMinnesota
    1
  386. 377JohnstownPennsylvania
    1
  387. 377State CollegePennsylvania
    1
  388. 377MilwaukeeWisconsin
    1
  389. 377MillcreekUtah
    1
  390. 377BellinghamWashington
    1
  391. 377Arden-ArcadeCalifornia
    1
  392. 392Lake MaryFlorida
    1
  393. 392Cedar RapidsIowa
    1
  394. 392GaryIndiana
    1
  395. 392JenisonMichigan
    1
  396. 392AllentownPennsylvania
    1
  397. 392ScrantonPennsylvania
    1
  398. 392SuperiorWisconsin
    1
  399. 392PaysonArizona
    1
  400. 392DavisCalifornia
    1
  401. 392San LeandroCalifornia
    1
  402. 392Coeur d'AleneIdaho
    1
  403. 392RentonWashington
    1
  404. 404BostonMassachusetts
    1
  405. 404Fall RiverMassachusetts
    1
  406. 404LynnMassachusetts
    1
  407. 404SouthfieldMichigan
    1
  408. 404EriePennsylvania
    1
  409. 404Upper Saint ClairPennsylvania
    1
  410. 404BanningCalifornia
    1
  411. 404TemeculaCalifornia
    1
  412. 404BozemanMontana
    1
  413. 413FairhopeAlabama
    1
  414. 413Coconut CreekFlorida
    1
  415. 413LeawoodKansas
    1
  416. 413ElktonMaryland
    1
  417. 413EastpointeMichigan
    1
  418. 413YpsilantiMichigan
    1
  419. 413ShakopeeMinnesota
    1
  420. 413LincolnNebraska
    1
  421. 413BethlehemPennsylvania
    1
  422. 413WaukeshaWisconsin
    1
  423. 413AtascaderoCalifornia
    1
  424. 413GlendoraCalifornia
    1
  425. 413LaceyWashington
    1
  426. 413VancouverWashington
    1
  427. 427EdgewoodMaryland
    1
  428. 427LemayMissouri
    1
  429. 427HaverhillMassachusetts
    1
  430. 427TaylorMichigan
    1
  431. 427Apple ValleyMinnesota
    1
  432. 427Saint PaulMinnesota
    1
  433. 427HermitagePennsylvania
    1
  434. 427Weirton HeightsWest Virginia
    1
  435. 427Santa RosaCalifornia
    1
  436. 427Fort CollinsColorado
    1
  437. 427OremUtah
    1
  438. 427YakimaWashington
    1
  439. 439NewarkDelaware
    1
  440. 439Kansas CityMissouri
    1
  441. 439HartfordConnecticut
    1
  442. 439TrentonNew Jersey
    1
  443. 439MadisonWisconsin
    1
  444. 439FillmoreCalifornia
    1
  445. 439GlendaleArizona
    1
  446. 439MaranaArizona
    1
  447. 439HanfordCalifornia
    1
  448. 439DenverColorado
    1
  449. 439GreeleyColorado
    1
  450. 439LongmontColorado
    1
  451. 439West JordanUtah
    1
  452. 439AuburnWashington
    1
  453. 453DanburyConnecticut
    1
  454. 453CaryIllinois
    1
  455. 453QuincyMassachusetts
    1
  456. 453SpringfieldMassachusetts
    1
  457. 453Port HuronMichigan
    1
  458. 453BayonneNew Jersey
    1
  459. 453AltoonaPennsylvania
    1
  460. 453RutlandVermont
    1
  461. 453South MilwaukeeWisconsin
    1
  462. 453LivermoreCalifornia
    1
  463. 453Santa Monicalow-cost sensorsCalifornia
    1
  464. 453Las CrucesNew Mexico
    1
  465. 453Grants PassOregon
    1
  466. 453Oxon Hill-GlassmanorMaryland
    1
  467. 467WaterburyConnecticut
    1
  468. 467LansingMichigan
    1
  469. 467TurlockCalifornia
    1
  470. 467RenoNevada
    1
  471. 467AmarilloTexas
    1
  472. 467LubbockTexas
    1
  473. 467HighlandUtah
    1
  474. 474RockvilleMaryland
    1
  475. 474South LaurelMaryland
    1
  476. 474LowellMassachusetts
    1
  477. 474WorcesterMassachusetts
    1
  478. 474BlaineMinnesota
    1
  479. 474ProvidenceRhode Island
    1
  480. 474Dodge CityKansas
    1
  481. 474SunnysideWashington
    1
  482. 474WenatcheeWashington
    1
  483. 474FairbanksAlaska
    1
  484. 484NorthbrookIllinois
    1
  485. 484ZionIllinois
    1
  486. 484DuluthMinnesota
    1
  487. 484New BrunswickNew Jersey
    1
  488. 484AppletonWisconsin
    1
  489. 484BerkeleyCalifornia
    1
  490. 484LancasterCalifornia
    1
  491. 484ReddingCalifornia
    1
  492. 484TigardOregon
    1
  493. 484West Valley CityUtah
    1
  494. 484SpokaneWashington
    1
  495. 495PortsmouthNew Hampshire
    1
  496. 495RochesterNew York
    1
  497. 495Eau ClaireWisconsin
    1
  498. 495MaderaCalifornia
    1
  499. 495MantecaCalifornia
    1
  500. 495RosevilleCalifornia
    1
  501. 501Saint CloudMinnesota
    1
  502. 501Saint MichaelMinnesota
    1
  503. 501OmahaNebraska
    1
  504. 501NewburghNew York
    1
  505. 501GahannaOhio
    1
  506. 501SacramentoCalifornia
    1
  507. 501Tularelow-cost sensorsCalifornia
    1
  508. 501Colorado SpringsColorado
    1
  509. 501Spanish SpringsNevada
    1
  510. 501HillsboroOregon
    1
  511. 501SalemOregon
    1
  512. 501EllensburgWashington
    1
  513. 501ShorelineWashington
    1
  514. 501Spokane ValleyWashington
    1
  515. 501Tri-CitiesWashington
    1
  516. 516GilroyCalifornia
    1
  517. 516OxnardCalifornia
    1
  518. 516Thousand OaksCalifornia
    1
  519. 516ButteMontana
    1
  520. 516Coos BayOregon
    1
  521. 516Salt Lake CityUtah
    1
  522. 516Spanish ForkUtah
    1
  523. 516BremertonWashington
    1
  524. 516BurienWashington
    1
  525. 516BadgerAlaska
    1
  526. 526MilfordMassachusetts
    1
  527. 526West FargoNorth Dakota
    1
  528. 526Green BayWisconsin
    1
  529. 526GaltCalifornia
    1
  530. 526HollisterCalifornia
    1
  531. 526PleasantonCalifornia
    1
  532. 526San RafaelCalifornia
    1
  533. 526Arvadalow-cost sensorsColorado
    1
  534. 526MoscowIdaho
    1
  535. 526AltamontOregon
    1
  536. 536GreenfieldMassachusetts
    1
  537. 536AlbanyNew York
    1
  538. 536Ken CarylColorado
    1
  539. 536Rio RanchoNew Mexico
    1
  540. 536Cedar CityUtah
    1
  541. 536Moses LakeWashington
    1
  542. 542HueytownAlabama
    1
  543. 542Lexingtonlow-cost sensorsMassachusetts
    1
  544. 542LewistonMaine
    1
  545. 542HollandMichigan
    1
  546. 542BellevueNebraska
    1
  547. 542La VistaNebraska
    1
  548. 542DerryNew Hampshire
    1
  549. 542KeeneNew Hampshire
    1
  550. 542SyracuseNew York
    1
  551. 542PawtucketRhode Island
    1
  552. 542RidgecrestCalifornia
    1
  553. 542PuebloColorado
    1
  554. 542AlbuquerqueNew Mexico
    1
  555. 542WindsorColorado
    1
  556. 542KīheiHawaii
    1
  557. 542HonoluluHawaii
    1
  558. 558HagerstownMaryland
    1
  559. 558North ChicopeeMassachusetts
    1
  560. 558PittsfieldMassachusetts
    1
  561. 558AugustaMaine
    1
  562. 558Grand IslandNebraska
    1
  563. 558ConcordCalifornia
    1
  564. 558ParadiseCalifornia
    1
  565. 558TracyCalifornia
    1
  566. 558Las VegasNevada
    1
  567. 558BoulderColorado
    1
  568. 558Twin FallsIdaho
    1
  569. 558CanbyOregon
    1
  570. 558GreshamOregon
    1
  571. 558MedfordOregon
    1
  572. 558HiloHawaii
    1
  573. 573BangorMaine
    1
  574. 573Redwood CityCalifornia
    1
  575. 573Yuba CityCalifornia
    1
  576. 573HurricaneUtah
    1
  577. 573HelenaMontana
    1
  578. 578UticaNew York
    1
  579. 578VallejoCalifornia
    1
  580. 578AlbanyOregon
    1
  581. 578EugeneOregon
    1
  582. 578PortlandOregon
    1
  583. 578The DallesOregon
    1
  584. 578CentraliaWashington
    1
  585. 585White PlainsNew York
    1
  586. 585ModestoCalifornia
    1
  587. 585OrcuttCalifornia
    1
  588. 585Idaho FallsIdaho
    1
  589. 585BountifulUtah
    1
  590. 585Brigham CityUtah
    1
  591. 585MagnaUtah
    1
  592. 585Salmon CreekWashington
    1
  593. 593Sioux FallsSouth Dakota
    1
  594. 593Torrancelow-cost sensorsCalifornia
    1
  595. 593Boulder CityNevada
    1
  596. 593BillingsMontana
    1
  597. 593Oregon CityOregon
    1
  598. 593TooeleUtah
    1
  599. 593AberdeenWashington
    1
  600. 593AnchorageAlaska
    1
  601. 601Green ValleyArizona
    1
  602. 601LincolnCalifornia
    1
  603. 601Carson CityNevada
    1
  604. 601North OgdenUtah
    1
  605. 601KahuluiHawaii
    1
  606. 606LimaOhio
    1
  607. 606AberdeenSouth Dakota
    1
  608. 606ChicoCalifornia
    1
  609. 606MilwaukieOregon
    1
  610. 606RoseburgOregon
    1
  611. 606WoodburnOregon
    1
  612. 606Oak HarborWashington
    1
  613. 613New CityNew York
    1
  614. 613Los Banoslow-cost sensorsCalifornia
    1
  615. 613EnterpriseNevada
    1
  616. 613AshlandOregon
    1
  617. 613BeavertonOregon
    1
  618. 613PendletonOregon
    1
  619. 613HerrimanUtah
    1
  620. 613KentWashington
    1
  621. 613LongviewWashington
    1
  622. 622CoventryRhode Island
    1
  623. 622TruckeeCalifornia
    1
  624. 622Cañon CityColorado
    1
  625. 622HendersonNevada
    1
  626. 622Spring ValleyNevada
    1
  627. 622MissoulaMontana
    1
  628. 622RedmondOregon
    1
  629. 629MarquetteMichigan
    1
  630. 629Brookfieldlow-cost sensorsWisconsin
    1
  631. 629FolsomCalifornia
    1
  632. 629PocatelloIdaho
    1
  633. 629GilletteWyoming
    1
  634. 629SheridanWyoming
    1
  635. 635BoiseIdaho
    1
  636. 635Summerlin SouthNevada
    1
  637. 637LompocCalifornia
    1
  638. 637VacavilleCalifornia
    1
  639. 637Grand JunctionColorado
    1
  640. 637Walla WallaWashington
    1
  641. 637Rock SpringsWyoming
    1
  642. 642Newtonlow-cost sensorsMassachusetts
    1
  643. 642LaconiaNew Hampshire
    1
  644. 642Pasadenalow-cost sensorsCalifornia
    1
  645. 642CorvallisOregon
    1
  646. 646DallasOregon
    1
  647. 647Middletonlow-cost sensorsWisconsin
    1
  648. 647MesquiteNevada
    1
  649. 647Forest GroveOregon
    1
  650. 647CasperWyoming
    1
  651. 651Huntington Beachlow-cost sensorsCalifornia
    1
  652. 651Kirklandlow-cost sensorsWashington
    1
  653. 651PullmanWashington
    1
  654. 654BellevueWashington
    1
  655. 654Mount VernonWashington
    1
  656. 654CheyenneWyoming
    1
  657. 654LaramieWyoming
    1
  658. 658AnacortesWashington
    1
  659. 659MartinezCalifornia
    1
  660. 660Union Hill-Novelty Hilllow-cost sensorsWashington
    1
  661. 661Palo Altolow-cost sensorsCalifornia
    1
  662. 661McMinnvilleOregon
    1
  663. 661Bothelllow-cost sensorsWashington
    1
  664. 664Goletalow-cost sensorsCalifornia
    1
  665. 665Encinitaslow-cost sensorsCalifornia
    1
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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, April 2026 · United States now

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SmogRank, most polluted cities in United States, PM2.5, April 2026, smogrank.com/us/history/2026-04 (accessed 2 Oct 2026).

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