SmogRank / World / United States / March 2026

Most polluted cities in United States, March 2026

669 cities in United States ranked by their average PM2.5 over the 31 days. Worst: South Lake Tahoe at 32.5 µg/m³, #209 of 2,616 cities in the world. Cleanest: Union Hill-Novelty Hill at 1.2. A city needs measurements on 70% of the days to be ranked.

← South Lake Tahoe 32.5
Every city in United States ranked for March 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1South Lake TahoeCalifornia
    4
  2. 2CalexicoCalifornia
    3
  3. 3Delanolow-cost sensorsCalifornia
    2
  4. 4Tularelow-cost sensorsCalifornia
    2
  5. 5AlbanyGeorgia
    2
  6. 6MaconGeorgia
    2
  7. 7Jurupa ValleyCalifornia
    2
  8. 8PortervilleCalifornia
    2
  9. 9BadgerAlaska
    2
  10. 10RedfordMichigan
    2
  11. 11BakersfieldCalifornia
    2
  12. 11VisaliaCalifornia
    2
  13. 13ColumbusGeorgia
    2
  14. 13WhittierCalifornia
    2
  15. 15AugustaGeorgia
    2
  16. 15ChattanoogaTennessee
    2
  17. 15El PasoTexas
    2
  18. 18Hawthornelow-cost sensorsCalifornia
    2
  19. 19Inglewoodlow-cost sensorsCalifornia
    2
  20. 20WichitaKansas
    2
  21. 21RiversideCalifornia
    2
  22. 22Royal Oaklow-cost sensorsMichigan
    2
  23. 22Los AngelesCalifornia
    2
  24. 22Pasadenalow-cost sensorsCalifornia
    2
  25. 25TallahasseeFlorida
    2
  26. 25Wake Forestlow-cost sensorsNorth Carolina
    2
  27. 25LaredoTexas
    2
  28. 25FontanaCalifornia
    2
  29. 29AthensGeorgia
    2
  30. 30GadsdenAlabama
    2
  31. 31Warner RobinsGeorgia
    2
  32. 32MontgomeryAlabama
    2
  33. 32Carsonlow-cost sensorsCalifornia
    2
  34. 32ComptonCalifornia
    2
  35. 32Candler-McAfeeGeorgia
    2
  36. 36BrookfieldIllinois
    2
  37. 37Santa Monicalow-cost sensorsCalifornia
    2
  38. 38SocorroTexas
    2
  39. 39OdessaTexas
    2
  40. 40SpartanburgSouth Carolina
    2
  41. 41East RidgeTennessee
    2
  42. 41CorcoranCalifornia
    2
  43. 41Huntington Beachlow-cost sensorsCalifornia
    2
  44. 44ValdostaGeorgia
    2
  45. 44Skokielow-cost sensorsIllinois
    2
  46. 46Torrancelow-cost sensorsCalifornia
    2
  47. 47DerbyKansas
    2
  48. 47TopekaKansas
    2
  49. 47Nileslow-cost sensorsIllinois
    2
  50. 47FresnoCalifornia
    2
  51. 51SpringdaleArkansas
    2
  52. 51FairbanksAlaska
    2
  53. 53AnaheimCalifornia
    2
  54. 54BessemerAlabama
    2
  55. 54TulsaOklahoma
    2
  56. 56Ponca CityOklahoma
    2
  57. 57Camdenlow-cost sensorsNew Jersey
    2
  58. 57WaterlooIowa
    2
  59. 57Evanstonlow-cost sensorsIllinois
    2
  60. 57San DiegoCalifornia
    2
  61. 61LawrencevilleGeorgia
    2
  62. 61JacksonMississippi
    2
  63. 61North CharlestonSouth Carolina
    2
  64. 64BirminghamAlabama
    2
  65. 64MissionTexas
    2
  66. 64Blue Islandlow-cost sensorsIllinois
    2
  67. 64Evergreen Parklow-cost sensorsIllinois
    2
  68. 68HuntsvilleAlabama
    2
  69. 68SavannahGeorgia
    2
  70. 68FlorenceSouth Carolina
    2
  71. 68GreenvilleSouth Carolina
    2
  72. 68HanfordCalifornia
    2
  73. 68Long BeachCalifornia
    2
  74. 68Eagle PassTexas
    2
  75. 75West MemphisArkansas
    2
  76. 75MuscatineIowa
    2
  77. 75BridgeviewIllinois
    2
  78. 75Chula VistaCalifornia
    2
  79. 79TrussvilleAlabama
    2
  80. 79AshlandKentucky
    2
  81. 79PhiladelphiaPennsylvania
    2
  82. 82Little RockArkansas
    2
  83. 82GainesvilleGeorgia
    2
  84. 82Winston-SalemNorth Carolina
    2
  85. 82WyomingMichigan
    2
  86. 82Lomitalow-cost sensorsCalifornia
    2
  87. 87AtlantaGeorgia
    2
  88. 87CharlotteNorth Carolina
    2
  89. 87Saint AndrewsSouth Carolina
    2
  90. 87TexarkanaTexas
    2
  91. 87Franklin ParkIllinois
    2
  92. 87Brookfieldlow-cost sensorsWisconsin
    2
  93. 87HobbsNew Mexico
    2
  94. 94Granite CityIllinois
    2
  95. 94HattiesburgMississippi
    2
  96. 94Corpus ChristiTexas
    2
  97. 94Abingtonlow-cost sensorsPennsylvania
    2
  98. 94NogalesArizona
    2
  99. 99DecaturAlabama
    1
  100. 99ShreveportLouisiana
    1
  101. 99BurbankCalifornia
    1
  102. 102Saint JosephMissouri
    1
  103. 102ClemmonsNorth Carolina
    1
  104. 102LexingtonNorth Carolina
    1
  105. 102MorrisvilleNorth Carolina
    1
  106. 102JenksOklahoma
    1
  107. 102ClintonIowa
    1
  108. 102ElginIllinois
    1
  109. 109MooreOklahoma
    1
  110. 109KnoxvilleTennessee
    1
  111. 109NashvilleTennessee
    1
  112. 109Calumet CityIllinois
    1
  113. 113OlatheKansas
    1
  114. 113Columbialow-cost sensorsMissouri
    1
  115. 113PortsmouthOhio
    1
  116. 113HendersonvilleTennessee
    1
  117. 113DoltonIllinois
    1
  118. 113Oconomowoclow-cost sensorsWisconsin
    1
  119. 119EvansvilleIndiana
    1
  120. 119FayettevilleNorth Carolina
    1
  121. 119BaytownTexas
    1
  122. 119Iowa CityIowa
    1
  123. 119Elmwood ParkIllinois
    1
  124. 119PeoriaIllinois
    1
  125. 119HammondIndiana
    1
  126. 119Sunland ParkNew Mexico
    1
  127. 127Kansas CityKansas
    1
  128. 127YorkPennsylvania
    1
  129. 127BrownsvilleTexas
    1
  130. 127EdinburgTexas
    1
  131. 127ChicagoIllinois
    1
  132. 127Des PlainesIllinois
    1
  133. 127FlintMichigan
    1
  134. 127Santa BarbaraCalifornia
    1
  135. 135BaltimoreMaryland
    1
  136. 135Fort WayneIndiana
    1
  137. 135Ann Arborlow-cost sensorsMichigan
    1
  138. 135OceansideCalifornia
    1
  139. 139Fort SmithArkansas
    1
  140. 139MiddletownOhio
    1
  141. 139Oklahoma CityOklahoma
    1
  142. 139BrookingsSouth Dakota
    1
  143. 139Agouralow-cost sensorsCalifornia
    1
  144. 139OaklandCalifornia
    1
  145. 145Upper AltonIllinois
    1
  146. 145RockfordIllinois
    1
  147. 145LebanonPennsylvania
    1
  148. 145NipomoCalifornia
    1
  149. 149New AlbanyIndiana
    1
  150. 149LouisvilleKentucky
    1
  151. 149St. LouisMissouri
    1
  152. 149DurhamNorth Carolina
    1
  153. 149HickoryNorth Carolina
    1
  154. 149RaleighNorth Carolina
    1
  155. 149MolineIllinois
    1
  156. 156East Saint LouisIllinois
    1
  157. 156Fort DodgeIowa
    1
  158. 156ClevelandOhio
    1
  159. 156LancasterPennsylvania
    1
  160. 156MilwaukeeWisconsin
    1
  161. 156Mission ViejoCalifornia
    1
  162. 162OwensboroKentucky
    1
  163. 162ColumbiaTennessee
    1
  164. 162AuroraIllinois
    1
  165. 162JolietIllinois
    1
  166. 162ModestoCalifornia
    1
  167. 162San FranciscoCalifornia
    1
  168. 168JeffersonvilleIndiana
    1
  169. 168SteubenvilleOhio
    1
  170. 168WestervilleOhio
    1
  171. 168WaukeshaWisconsin
    1
  172. 168MercedCalifornia
    1
  173. 168SalinasCalifornia
    1
  174. 174Valley StationKentucky
    1
  175. 174GreensboroNorth Carolina
    1
  176. 174PennsaukenNew Jersey
    1
  177. 174BartlettTennessee
    1
  178. 174Cedar RapidsIowa
    1
  179. 174DavenportIowa
    1
  180. 174PerrysburgOhio
    1
  181. 174El CajonCalifornia
    1
  182. 174Great FallsMontana
    1
  183. 183MonroeLouisiana
    1
  184. 183EdmondOklahoma
    1
  185. 183MaryvilleTennessee
    1
  186. 183Encinitaslow-cost sensorsCalifornia
    1
  187. 183MaderaCalifornia
    1
  188. 183PowayCalifornia
    1
  189. 183StocktonCalifornia
    1
  190. 183MidwayFlorida
    1
  191. 191Ferry PassFlorida
    1
  192. 191McDonoughGeorgia
    1
  193. 191Baton RougeLouisiana
    1
  194. 191University CityMissouri
    1
  195. 191AshevilleNorth Carolina
    1
  196. 191ClarksvilleTennessee
    1
  197. 191NapervilleIllinois
    1
  198. 191Oak LawnIllinois
    1
  199. 191ToledoOhio
    1
  200. 200Kendale LakesFlorida
    1
  201. 200Ponte Vedra BeachFlorida
    1
  202. 200IndianapolisIndiana
    1
  203. 200SpringfieldMissouri
    1
  204. 200NorwoodOhio
    1
  205. 200McAlesterOklahoma
    1
  206. 200West MifflinPennsylvania
    1
  207. 200GlendoraCalifornia
    1
  208. 200San Luis ObispoCalifornia
    1
  209. 209WilmingtonDelaware
    1
  210. 209GulfportMississippi
    1
  211. 209HernandoMississippi
    1
  212. 209East ChicagoIndiana
    1
  213. 209ElkhartIndiana
    1
  214. 209Bay CityMichigan
    1
  215. 209DetroitMichigan
    1
  216. 209New York CityNew York
    1
  217. 209OregonOhio
    1
  218. 209PhoenixArizona
    1
  219. 209TucsonArizona
    1
  220. 209Lake ElsinoreCalifornia
    1
  221. 221JeffersontownKentucky
    1
  222. 221Live OakTexas
    1
  223. 221Grand RapidsMichigan
    1
  224. 221MadisonWisconsin
    1
  225. 221Casa GrandeArizona
    1
  226. 221San JoseCalifornia
    1
  227. 227WashingtonDistrict of Columbia
    1
  228. 227OcalaFlorida
    1
  229. 227VeniceFlorida
    1
  230. 227BrunswickGeorgia
    1
  231. 227EssexMaryland
    1
  232. 227LawtonOklahoma
    1
  233. 227AustinTexas
    1
  234. 227HoustonTexas
    1
  235. 227CharlestonWest Virginia
    1
  236. 227AnkenyIowa
    1
  237. 227Des MoinesIowa
    1
  238. 227ChampaignIllinois
    1
  239. 227MinneapolisMinnesota
    1
  240. 240PrichardAlabama
    1
  241. 240DecaturIllinois
    1
  242. 240BloomingtonIndiana
    1
  243. 240JasperIndiana
    1
  244. 240LemayMissouri
    1
  245. 240ClaytonNorth Carolina
    1
  246. 240CookevilleTennessee
    1
  247. 240ConroeTexas
    1
  248. 240HuntingtonWest Virginia
    1
  249. 240South BendIndiana
    1
  250. 240DearbornMichigan
    1
  251. 240Lincoln ParkMichigan
    1
  252. 240MankatoMinnesota
    1
  253. 240HarrisburgPennsylvania
    1
  254. 240RichmondCalifornia
    1
  255. 240Santa ClaritaCalifornia
    1
  256. 240Arden-ArcadeCalifornia
    1
  257. 257St. PetersburgFlorida
    1
  258. 257ElizabethtownKentucky
    1
  259. 257JacksonTennessee
    1
  260. 257San AntonioTexas
    1
  261. 257ChesapeakeVirginia
    1
  262. 257Michigan CityIndiana
    1
  263. 257KalamazooMichigan
    1
  264. 257ElizabethNew Jersey
    1
  265. 257Jersey CityNew Jersey
    1
  266. 257AppletonWisconsin
    1
  267. 257NampaIdaho
    1
  268. 268TampaFlorida
    1
  269. 268Saint MatthewsKentucky
    1
  270. 268Kansas CityMissouri
    1
  271. 268ConwaySouth Carolina
    1
  272. 268CharlottesvilleVirginia
    1
  273. 268SpringfieldVirginia
    1
  274. 268JenisonMichigan
    1
  275. 268Saint PaulMinnesota
    1
  276. 268Fort LeeNew Jersey
    1
  277. 268CarlislePennsylvania
    1
  278. 268San LeandroCalifornia
    1
  279. 268WoodlandCalifornia
    1
  280. 280Oak RidgeFlorida
    1
  281. 280Palm CityFlorida
    1
  282. 280SpringfieldIllinois
    1
  283. 280PascagoulaMississippi
    1
  284. 280KingsportTennessee
    1
  285. 280RichmondVirginia
    1
  286. 280CaryIllinois
    1
  287. 280PatersonNew Jersey
    1
  288. 280WatertownSouth Dakota
    1
  289. 280Green BayWisconsin
    1
  290. 280MantecaCalifornia
    1
  291. 291Bonita SpringsFlorida
    1
  292. 291Fort LauderdaleFlorida
    1
  293. 291MiamiFlorida
    1
  294. 291LeawoodKansas
    1
  295. 291GreenvilleNorth Carolina
    1
  296. 291Toms RiverNew Jersey
    1
  297. 291PasadenaTexas
    1
  298. 291HopewellVirginia
    1
  299. 291ReadingPennsylvania
    1
  300. 291Middletonlow-cost sensorsWisconsin
    1
  301. 291ClovisCalifornia
    1
  302. 291Simi ValleyCalifornia
    1
  303. 303JacksonvilleFlorida
    1
  304. 303ValricoFlorida
    1
  305. 303New OrleansLouisiana
    1
  306. 303RaymoreMissouri
    1
  307. 303Roanoke RapidsNorth Carolina
    1
  308. 303ColumbusOhio
    1
  309. 303ChesterPennsylvania
    1
  310. 303New HavenConnecticut
    1
  311. 303BloomingtonIllinois
    1
  312. 303South MilwaukeeWisconsin
    1
  313. 303MesaArizona
    1
  314. 303TurlockCalifornia
    1
  315. 315LansingMichigan
    1
  316. 315BurnsvilleMinnesota
    1
  317. 315BuffaloNew York
    1
  318. 315NorristownPennsylvania
    1
  319. 315Arroyo GrandeCalifornia
    1
  320. 315Florinlow-cost sensorsCalifornia
    1
  321. 321PaducahKentucky
    1
  322. 321KennerLouisiana
    1
  323. 321ArnoldMissouri
    1
  324. 321South VinelandNew Jersey
    1
  325. 321Fort WorthTexas
    1
  326. 321AshburnVirginia
    1
  327. 321MuncieIndiana
    1
  328. 321EastpointeMichigan
    1
  329. 321Port HuronMichigan
    1
  330. 321EwingNew Jersey
    1
  331. 321RutlandVermont
    1
  332. 321BridgeportConnecticut
    1
  333. 321Goletalow-cost sensorsCalifornia
    1
  334. 321Apache JunctionArizona
    1
  335. 321LewistonIdaho
    1
  336. 336Daytona BeachFlorida
    1
  337. 336CincinnatiOhio
    1
  338. 336DyersburgTennessee
    1
  339. 336East HamptonVirginia
    1
  340. 336Short PumpVirginia
    1
  341. 336BlaineMinnesota
    1
  342. 336DublinOhio
    1
  343. 336WarrenOhio
    1
  344. 336PaysonArizona
    1
  345. 345Pompano BeachFlorida
    1
  346. 345Lexington-FayetteKentucky
    1
  347. 345NicholasvilleKentucky
    1
  348. 345ChalmetteLouisiana
    1
  349. 345DaytonOhio
    1
  350. 345RoanokeVirginia
    1
  351. 345SalemVirginia
    1
  352. 345SouthfieldMichigan
    1
  353. 345YpsilantiMichigan
    1
  354. 345LindenNew Jersey
    1
  355. 345Eau ClaireWisconsin
    1
  356. 345TempeArizona
    1
  357. 345BerkeleyCalifornia
    1
  358. 345SacramentoCalifornia
    1
  359. 345La Crescenta-Montroselow-cost sensorsCalifornia
    1
  360. 360Hunt ValleyMaryland
    1
  361. 360Rose HillVirginia
    1
  362. 360AndersonIndiana
    1
  363. 360RochesterMinnesota
    1
  364. 360AlbanyNew York
    1
  365. 360HolbrookNew York
    1
  366. 360CantonOhio
    1
  367. 360PittsburghPennsylvania
    1
  368. 360GlendaleArizona
    1
  369. 369Belle GladeFlorida
    1
  370. 369Fruit CoveFlorida
    1
  371. 369OrlandoFlorida
    1
  372. 369West PensacolaFlorida
    1
  373. 369DanburyConnecticut
    1
  374. 369Cleveland HeightsOhio
    1
  375. 369NorthbrookIllinois
    1
  376. 369TaylorMichigan
    1
  377. 369ShakopeeMinnesota
    1
  378. 369MedinaOhio
    1
  379. 369WilkinsburgPennsylvania
    1
  380. 369YumaArizona
    1
  381. 369OxnardCalifornia
    1
  382. 369RenoNevada
    1
  383. 383Fort MyersFlorida
    1
  384. 383GainesvilleFlorida
    1
  385. 383SewellNew Jersey
    1
  386. 383MasonOhio
    1
  387. 383College StationTexas
    1
  388. 383CorsicanaTexas
    1
  389. 383Mission BendTexas
    1
  390. 383FillmoreCalifornia
    1
  391. 383OrcuttCalifornia
    1
  392. 383Dodge CityKansas
    1
  393. 383GreeleyColorado
    1
  394. 383MillcreekUtah
    1
  395. 383AnchorageAlaska
    1
  396. 383Four CornersFlorida
    1
  397. 397BearDelaware
    1
  398. 397Safety HarborFlorida
    1
  399. 397ScaggsvilleMaryland
    1
  400. 397ZionIllinois
    1
  401. 397Apple ValleyMinnesota
    1
  402. 397AkronOhio
    1
  403. 397AllentownPennsylvania
    1
  404. 397JohnstownPennsylvania
    1
  405. 397SuperiorWisconsin
    1
  406. 397DavisCalifornia
    1
  407. 397UkiahCalifornia
    1
  408. 408LibertyMissouri
    1
  409. 408SaginawTexas
    1
  410. 408WaterburyConnecticut
    1
  411. 408PortlandMaine
    1
  412. 408La VistaNebraska
    1
  413. 408PainesvilleOhio
    1
  414. 408YoungstownOhio
    1
  415. 408WeirtonWest Virginia
    1
  416. 416FairhopeAlabama
    1
  417. 416DoverDelaware
    1
  418. 416Deerfield BeachFlorida
    1
  419. 416Lake MaryFlorida
    1
  420. 416Palm BayFlorida
    1
  421. 416SarasotaFlorida
    1
  422. 416EdgewoodMaryland
    1
  423. 416ElktonMaryland
    1
  424. 416SpringfieldOhio
    1
  425. 416Port ArthurTexas
    1
  426. 416TaylorTexas
    1
  427. 416HartfordConnecticut
    1
  428. 416SpringfieldMassachusetts
    1
  429. 416Saint MichaelMinnesota
    1
  430. 416BellevueNebraska
    1
  431. 416LincolnNebraska
    1
  432. 416Shaker HeightsOhio
    1
  433. 416EriePennsylvania
    1
  434. 416Santa CruzCalifornia
    1
  435. 416Yuba CityCalifornia
    1
  436. 416Las VegasNevada
    1
  437. 437Delray BeachFlorida
    1
  438. 437San MarcosTexas
    1
  439. 437State CollegePennsylvania
    1
  440. 437BrawleyCalifornia
    1
  441. 437El CentroCalifornia
    1
  442. 437IndioCalifornia
    1
  443. 437RosevilleCalifornia
    1
  444. 437MedfordOregon
    1
  445. 445DavieFlorida
    1
  446. 445WellingtonFlorida
    1
  447. 445White OakOhio
    1
  448. 445HollandMichigan
    1
  449. 445ScrantonPennsylvania
    1
  450. 445LubbockTexas
    1
  451. 445Oxon Hill-GlassmanorMaryland
    1
  452. 452NewarkDelaware
    1
  453. 452East LakeFlorida
    1
  454. 452La PorteTexas
    1
  455. 452Saint CloudMinnesota
    1
  456. 452OmahaNebraska
    1
  457. 452BayonneNew Jersey
    1
  458. 452RochesterNew York
    1
  459. 452Casas AdobesArizona
    1
  460. 452MaranaArizona
    1
  461. 452GaltCalifornia
    1
  462. 452WindsorColorado
    1
  463. 463WestonFlorida
    1
  464. 463LafayetteLouisiana
    1
  465. 463Atlantic CityNew Jersey
    1
  466. 463LebanonOhio
    1
  467. 463LancasterCalifornia
    1
  468. 463AlbuquerqueNew Mexico
    1
  469. 463Rio RanchoNew Mexico
    1
  470. 463West Valley CityUtah
    1
  471. 471Fort ThomasKentucky
    1
  472. 471PflugervilleTexas
    1
  473. 471FraminghamMassachusetts
    1
  474. 471HermitagePennsylvania
    1
  475. 471McKeesportPennsylvania
    1
  476. 471Upper Saint ClairPennsylvania
    1
  477. 471Weirton HeightsWest Virginia
    1
  478. 471LivermoreCalifornia
    1
  479. 471Redwood CityCalifornia
    1
  480. 471AltamontOregon
    1
  481. 481BeltonTexas
    1
  482. 481GalvestonTexas
    1
  483. 481West FargoNorth Dakota
    1
  484. 481VallejoCalifornia
    1
  485. 481RandolphNew Jersey
    1
  486. 486Cedar ParkTexas
    1
  487. 486New LondonConnecticut
    1
  488. 486BostonMassachusetts
    1
  489. 486GreenfieldMassachusetts
    1
  490. 486DuluthMinnesota
    1
  491. 486UticaNew York
    1
  492. 486Picnic Point-North LynnwoodWashington
    1
  493. 493Coconut CreekFlorida
    1
  494. 493South LaurelMaryland
    1
  495. 493Fall RiverMassachusetts
    1
  496. 493HaverhillMassachusetts
    1
  497. 493LynnMassachusetts
    1
  498. 493KeeneNew Hampshire
    1
  499. 493NewburghNew York
    1
  500. 493BanningCalifornia
    1
  501. 493LincolnCalifornia
    1
  502. 493Las CrucesNew Mexico
    1
  503. 503TrentonNew Jersey
    1
  504. 503GahannaOhio
    1
  505. 503AltoonaPennsylvania
    1
  506. 503GilroyCalifornia
    1
  507. 503TemeculaCalifornia
    1
  508. 503HermistonOregon
    1
  509. 503YakimaWashington
    1
  510. 510BrocktonMassachusetts
    1
  511. 510ProvidenceRhode Island
    1
  512. 510PleasantonCalifornia
    1
  513. 510Thousand OaksCalifornia
    1
  514. 510TracyCalifornia
    1
  515. 515LowellMassachusetts
    1
  516. 515WorcesterMassachusetts
    1
  517. 515SyracuseNew York
    1
  518. 515South San Franciscolow-cost sensorsCalifornia
    1
  519. 515Cedar CityUtah
    1
  520. 515OremUtah
    1
  521. 515Columbia CityWashington
    1
  522. 522RockvilleMaryland
    1
  523. 522LimaOhio
    1
  524. 522AberdeenSouth Dakota
    1
  525. 522San RafaelCalifornia
    1
  526. 522Seasidelow-cost sensorsCalifornia
    1
  527. 522West JordanUtah
    1
  528. 522HonoluluHawaii
    1
  529. 529QuincyMassachusetts
    1
  530. 529HollisterCalifornia
    1
  531. 529ThorntonColorado
    1
  532. 529Spring ValleyNevada
    1
  533. 529BillingsMontana
    1
  534. 529Salt Lake CityUtah
    1
  535. 529Spanish ForkUtah
    1
  536. 536HueytownAlabama
    1
  537. 536PittsfieldMassachusetts
    1
  538. 536White PlainsNew York
    1
  539. 536ConcordCalifornia
    1
  540. 536Grand JunctionColorado
    1
  541. 541PleasantvilleNew Jersey
    1
  542. 541PuebloColorado
    1
  543. 541Fort CollinsColorado
    1
  544. 544North ChicopeeMassachusetts
    1
  545. 544LewistonMaine
    1
  546. 544PortsmouthNew Hampshire
    1
  547. 544ChicoCalifornia
    1
  548. 544FolsomCalifornia
    1
  549. 544Coeur d'AleneIdaho
    1
  550. 544BozemanMontana
    1
  551. 544Grants PassOregon
    1
  552. 544AuburnWashington
    1
  553. 544SeattleWashington
    1
  554. 544SunnysideWashington
    1
  555. 555AugustaMaine
    1
  556. 555New CityNew York
    1
  557. 555ReddingCalifornia
    1
  558. 555HillsboroOregon
    1
  559. 555HighlandUtah
    1
  560. 555VancouverWashington
    1
  561. 561Grand IslandNebraska
    1
  562. 561Sioux FallsSouth Dakota
    1
  563. 561Santa RosaCalifornia
    1
  564. 561PocatelloIdaho
    1
  565. 561ButteMontana
    1
  566. 561Rapid CitySouth Dakota
    1
  567. 567HagerstownMaryland
    1
  568. 567MilfordMassachusetts
    1
  569. 567BangorMaine
    1
  570. 567AtascaderoCalifornia
    1
  571. 567RidgecrestCalifornia
    1
  572. 567VacavilleCalifornia
    1
  573. 567Spanish SpringsNevada
    1
  574. 567TigardOregon
    1
  575. 567TacomaWashington
    1
  576. 576HendersonNevada
    1
  577. 576Twin FallsIdaho
    1
  578. 578DerryNew Hampshire
    1
  579. 578Lakewoodlow-cost sensorsColorado
    1
  580. 578Idaho FallsIdaho
    1
  581. 578MoscowIdaho
    1
  582. 578HelenaMontana
    1
  583. 578BountifulUtah
    1
  584. 578MagnaUtah
    1
  585. 578RentonWashington
    1
  586. 586LaconiaNew Hampshire
    1
  587. 586Windsorlow-cost sensorsCalifornia
    1
  588. 586LongmontColorado
    1
  589. 586AshlandOregon
    1
  590. 590ParadiseCalifornia
    1
  591. 590DenverColorado
    1
  592. 590Ken CarylColorado
    1
  593. 590EnterpriseNevada
    1
  594. 590CanbyOregon
    1
  595. 590HerrimanUtah
    1
  596. 590EllensburgWashington
    1
  597. 590LaceyWashington
    1
  598. 590SpokaneWashington
    1
  599. 590WenatcheeWashington
    1
  600. 600Lexingtonlow-cost sensorsMassachusetts
    1
  601. 600Carson CityNevada
    1
  602. 600HurricaneUtah
    1
  603. 600BellinghamWashington
    1
  604. 600KīheiHawaii
    1
  605. 605MarquetteMichigan
    1
  606. 605Colorado SpringsColorado
    1
  607. 605EugeneOregon
    1
  608. 605TooeleUtah
    1
  609. 605Spokane ValleyWashington
    1
  610. 610Arvadalow-cost sensorsColorado
    1
  611. 610MesquiteNevada
    1
  612. 610Brigham CityUtah
    1
  613. 613Boulder CityNevada
    1
  614. 613GreshamOregon
    1
  615. 613MilwaukieOregon
    1
  616. 613The DallesOregon
    1
  617. 613North OgdenUtah
    1
  618. 613Summerlin SouthNevada
    1
  619. 613Tri-CitiesWashington
    1
  620. 620AlbanyOregon
    1
  621. 620PortlandOregon
    1
  622. 620WoodburnOregon
    1
  623. 623Newtonlow-cost sensorsMassachusetts
    1
  624. 623TruckeeCalifornia
    1
  625. 623Cañon CityColorado
    1
  626. 623RoseburgOregon
    1
  627. 623SalemOregon
    1
  628. 623HiloHawaii
    1
  629. 629LompocCalifornia
    1
  630. 629Oregon CityOregon
    1
  631. 629Salmon CreekWashington
    1
  632. 629KahuluiHawaii
    1
  633. 633Green ValleyArizona
    1
  634. 633MartinezCalifornia
    1
  635. 633BeavertonOregon
    1
  636. 633Coos BayOregon
    1
  637. 633BurienWashington
    1
  638. 633LongviewWashington
    1
  639. 633Moses LakeWashington
    1
  640. 633ShorelineWashington
    1
  641. 641Palo Altolow-cost sensorsCalifornia
    1
  642. 641PendletonOregon
    1
  643. 641BremertonWashington
    1
  644. 644BoulderColorado
    1
  645. 644BoiseIdaho
    1
  646. 644DallasOregon
    1
  647. 647BendOregon
    1
  648. 647CentraliaWashington
    1
  649. 647ParklandWashington
    1
  650. 647GilletteWyoming
    1
  651. 647LaramieWyoming
    1
  652. 647Rock SpringsWyoming
    1
  653. 653RedmondOregon
    1
  654. 654MissoulaMontana
    1
  655. 654Walla WallaWashington
    1
  656. 656CoventryRhode Island
    1
  657. 656Forest GroveOregon
    1
  658. 658AberdeenWashington
    1
  659. 658KentWashington
    1
  660. 660CorvallisOregon
    1
  661. 660CheyenneWyoming
    1
  662. 662PullmanWashington
    1
  663. 663Oak HarborWashington
    1
  664. 664McMinnvilleOregon
    1
  665. 665BellevueWashington
    1
  666. 665CasperWyoming
    1
  667. 667Mount VernonWashington
    1
  668. 668AnacortesWashington
    1
  669. 668Union Hill-Novelty Hilllow-cost sensorsWashington
    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, March 2026 · United States now

Use this board

SmogRank, most polluted cities in United States, PM2.5, March 2026, smogrank.com/us/history/2026-03 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.