SmogRank / History / June 9, 2023

Most polluted cities on June 9, 2023

1,568 cities ranked by their average PM2.5 over the day; the worst was Tha Bo, Thailand, at 422.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during June 9, 2023. All episodes.

← Tha Bo 422.0 µg/m³ 400 µg/m³15 WHO 24-hour guideline
Every city ranked for June 9, 2023, 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. 1Tha BoNong Khai, Thailand
    500+28.1×
  2. 2DushanbeDushanbe, Tajikistan
    38217.7×
  3. 3BloemfonteinFree State, South Africa
    1796.4×
  4. 4Lahorelow-cost sensorsPunjab, Pakistan
    1756.0×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1614.6×
  6. 6Rouyn-NorandaQuebec, Canada
    1604.5×
  7. 7Dhakalow-cost sensorsDhaka Division, Bangladesh
    1594.4×
  8. 8Grande PrairieAlberta, Canada
    1584.4×
  9. 9EtwatwaGauteng, South Africa
    1564.2×
  10. 10EdmontonAlberta, Canada
    1554.0×
  11. 11SaskatoonSaskatchewan, Canada
    1544.0×
  12. 12BrakpanGauteng, South Africa
    1483.6×
  13. 13CoyhaiqueAysén, Chile
    1483.6×
  14. 14Puerto MonttLos Lagos Region, Chile
    1383.4×
  15. 15NacimientoBiobio, Chile
    1383.4×
  16. 16Los ÁngelesBiobio, Chile
    1373.3×
  17. 17Puerto VarasLos Lagos Region, Chile
    1333.2×
  18. 18RaleighNorth Carolina, United States
    1293.1×
  19. 19ManamaManama, Bahrain
    1283.1×
  20. 20Islamabadlow-cost sensorsIslamabad, Pakistan
    1273.1×
  21. 21OsornoLos Lagos Region, Chile
    1263.0×
  22. 22North BayOntario, Canada
    1222.9×
  23. 23KigaliKigali, Rwanda
    1202.9×
  24. 23Addis AbabaAddis Ababa, Ethiopia
    1202.9×
  25. 25La UniónLos Ríos Region, Chile
    1202.9×
  26. 26JakartaJakarta, Indonesia
    1162.8×
  27. 27Swift CurrentSaskatchewan, Canada
    1142.7×
  28. 28MarikanaNorth West, South Africa
    1122.7×
  29. 29Sherwood ParkAlberta, Canada
    1112.6×
  30. 30ValdiviaLos Ríos Region, Chile
    1102.6×
  31. 31LansingMichigan, United States
    1092.6×
  32. 32ReginaSaskatchewan, Canada
    1082.6×
  33. 33Kathmandulow-cost sensorsBagmati Province, Nepal
    1052.5×
  34. 33SarniaOntario, Canada
    1052.5×
  35. 35ElizabethtownKentucky, United States
    1052.5×
  36. 35Lincoln ParkMichigan, United States
    1052.5×
  37. 35Port HuronMichigan, United States
    1052.5×
  38. 38DetroitMichigan, United States
    1042.4×
  39. 38KalamazooMichigan, United States
    1042.4×
  40. 40St. AlbertAlberta, Canada
    1032.4×
  41. 41BrantfordOntario, Canada
    1032.4×
  42. 42ClaytonNorth Carolina, United States
    1022.4×
  43. 43DearbornMichigan, United States
    1012.4×
  44. 44CharlottesvilleVirginia, United States
    1012.4×
  45. 45KolkataWest Bengal, India
    992.3×
  46. 46ChesapeakeVirginia, United States
    992.3×
  47. 47SalamancaGuanajuato, Mexico
    992.3×
  48. 48MorrisvilleNorth Carolina, United States
    992.3×
  49. 49HopewellVirginia, United States
    982.3×
  50. 49DublinOhio, United States
    982.3×
  51. 51BarrieOntario, Canada
    982.3×
  52. 52Greater SudburyOntario, Canada
    972.3×
  53. 52KitchenerOntario, Canada
    972.3×
  54. 54SasolburgFree State, South Africa
    972.3×
  55. 55São PauloSão Paulo, Brazil
    972.3×
  56. 56Puerto AysénAysén, Chile
    972.2×
  57. 56YpsilantiMichigan, United States
    972.2×
  58. 56St. ThomasOntario, Canada
    972.2×
  59. 59RichmondVirginia, United States
    962.2×
  60. 60AndersonIndiana, United States
    962.2×
  61. 61BirminghamAlabama, United States
    952.2×
  62. 62LondonOntario, Canada
    952.2×
  63. 63Winston-SalemNorth Carolina, United States
    952.2×
  64. 63East HamptonVirginia, United States
    952.2×
  65. 65HernandoMississippi, United States
    952.2×
  66. 66TaylorMichigan, United States
    942.1×
  67. 67ChattanoogaTennessee, United States
    942.1×
  68. 68Prince AlbertSaskatchewan, Canada
    932.1×
  69. 69HualpénBiobio, Chile
    932.1×
  70. 70San CarlosÑuble, Chile
    932.1×
  71. 71RengoO'Higgins Region, Chile
    922.1×
  72. 71DoverDelaware, United States
    922.1×
  73. 71MiddletownOhio, United States
    922.1×
  74. 74South BendIndiana, United States
    922.1×
  75. 75CopiapóAtacama, Chile
    912.0×
  76. 76Lagoslow-cost sensorsLagos, Nigeria
    912.0×
  77. 76East RidgeTennessee, United States
    912.0×
  78. 76St. CatharinesOntario, Canada
    912.0×
  79. 79JeddahMecca Region, Saudi Arabia
    902.0×
  80. 79ClevelandOhio, United States
    902.0×
  81. 81JeffersonvilleIndiana, United States
    902.0×
  82. 82AmmanAmman, Jordan
    902.0×
  83. 82EriePennsylvania, United States
    902.0×
  84. 84ClemmonsNorth Carolina, United States
    892.0×
  85. 84FlorenceSouth Carolina, United States
    892.0×
  86. 86ConwaySouth Carolina, United States
    892.0×
  87. 86ChathamOntario, Canada
    892.0×
  88. 88Lexington-FayetteKentucky, United States
    892.0×
  89. 88RoanokeVirginia, United States
    892.0×
  90. 90Roanoke RapidsNorth Carolina, United States
    892.0×
  91. 90FlintMichigan, United States
    892.0×
  92. 92SteubenvilleOhio, United States
    881.9×
  93. 93ChillánÑuble, Chile
    881.9×
  94. 93CelayaGuanajuato, Mexico
    881.9×
  95. 95León de los AldamaGuanajuato, Mexico
    881.9×
  96. 96JeffersontownKentucky, United States
    881.9×
  97. 97New LondonConnecticut, United States
    881.9×
  98. 97State CollegePennsylvania, United States
    881.9×
  99. 99GainesvilleGeorgia, United States
    871.9×
  100. 99Fall RiverMassachusetts, United States
    871.9×
  101. 99BuffaloNew York, United States
    871.9×
  102. 99CantonOhio, United States
    871.9×
  103. 103RancaguaO'Higgins Region, Chile
    871.9×
  104. 103AkronOhio, United States
    871.9×
  105. 105CoronelBiobio, Chile
    871.9×
  106. 106North CharlestonSouth Carolina, United States
    871.9×
  107. 107TalcahuanoBiobio, Chile
    861.9×
  108. 107Phenix CityAlabama, United States
    861.9×
  109. 107EvansvilleIndiana, United States
    861.9×
  110. 110IndianapolisIndiana, United States
    861.9×
  111. 110GreenvilleNorth Carolina, United States
    861.9×
  112. 112AshlandKentucky, United States
    861.9×
  113. 112DaytonOhio, United States
    861.9×
  114. 114LouisvilleKentucky, United States
    861.9×
  115. 114Saint AndrewsSouth Carolina, United States
    861.9×
  116. 116Şabāḩ as SālimMubārak al Kabīr, Kuwait
    861.8×
  117. 116Valley StationKentucky, United States
    861.8×
  118. 118RabinalBaja Verapaz, Guatemala
    851.8×
  119. 118Guatemala CityGuatemala, Guatemala
    851.8×
  120. 118Fort McMurrayAlberta, Canada
    851.8×
  121. 121ElkhartIndiana, United States
    851.8×
  122. 121KokomoIndiana, United States
    851.8×
  123. 123ThabazimbiLimpopo, South Africa
    851.8×
  124. 123TemucoAraucania, Chile
    851.8×
  125. 123OwensboroKentucky, United States
    851.8×
  126. 126East Saint LouisIllinois, United States
    851.8×
  127. 126DurhamNorth Carolina, United States
    851.8×
  128. 128LawrencevilleGeorgia, United States
    841.8×
  129. 128WarrenOhio, United States
    841.8×
  130. 128HamiltonOntario, Canada
    841.8×
  131. 131YoungstownOhio, United States
    841.8×
  132. 131PittsburghPennsylvania, United States
    841.8×
  133. 133AntofagastaAntofagasta, Chile
    841.8×
  134. 133ElktonMaryland, United States
    841.8×
  135. 133KnoxvilleTennessee, United States
    841.8×
  136. 136PaducahKentucky, United States
    831.8×
  137. 136Kansas CityMissouri, United States
    831.8×
  138. 136SpringfieldOhio, United States
    831.8×
  139. 139MaconGeorgia, United States
    831.8×
  140. 139Weirton HeightsWest Virginia, United States
    831.8×
  141. 141WilmingtonDelaware, United States
    831.7×
  142. 141South VinelandNew Jersey, United States
    831.7×
  143. 143BearDelaware, United States
    831.7×
  144. 144PleasantvilleNew Jersey, United States
    821.7×
  145. 144CharlestonWest Virginia, United States
    821.7×
  146. 146BensalemPennsylvania, United States
    821.7×
  147. 147Saint MatthewsKentucky, United States
    821.7×
  148. 147YorkPennsylvania, United States
    821.7×
  149. 147Shaker HeightsOhio, United States
    821.7×
  150. 150AthensGeorgia, United States
    821.7×
  151. 151AugustaGeorgia, United States
    821.7×
  152. 152BakuBaki, Azerbaijan
    821.7×
  153. 152SantiagoSantiago Metropolitan, Chile
    821.7×
  154. 152ChesterPennsylvania, United States
    821.7×
  155. 155TocopillaAntofagasta, Chile
    811.7×
  156. 155RedfordMichigan, United States
    811.7×
  157. 157CuranilahueBiobio, Chile
    811.7×
  158. 157Bay CityMichigan, United States
    811.7×
  159. 157AirdrieAlberta, Canada
    811.7×
  160. 160BartlettTennessee, United States
    811.7×
  161. 160WilkinsburgPennsylvania, United States
    811.7×
  162. 162ToméBiobio, Chile
    811.7×
  163. 162St. LouisMissouri, United States
    811.7×
  164. 164HueytownAlabama, United States
    811.7×
  165. 164MolineIllinois, United States
    811.7×
  166. 166DavenportIowa, United States
    801.7×
  167. 167DelhiDelhi, India
    801.7×
  168. 167TrussvilleAlabama, United States
    801.7×
  169. 167ClintonIowa, United States
    801.7×
  170. 167HarrisburgPennsylvania, United States
    801.7×
  171. 167West MifflinPennsylvania, United States
    801.7×
  172. 172Red DeerAlberta, Canada
    801.6×
  173. 173Rose HillVirginia, United States
    801.6×
  174. 173AltoonaPennsylvania, United States
    801.6×
  175. 175KrefeldNorth Rhine-Westphalia, Germany
    801.6×
  176. 175GreensboroNorth Carolina, United States
    801.6×
  177. 175CarlislePennsylvania, United States
    801.6×
  178. 178SalorTashkent Region, Uzbekistan
    791.6×
  179. 178HuntsvilleAlabama, United States
    791.6×
  180. 178FayettevilleNorth Carolina, United States
    791.6×
  181. 178Toms RiverNew Jersey, United States
    791.6×
  182. 182AlbanyGeorgia, United States
    791.6×
  183. 182Warner RobinsGeorgia, United States
    791.6×
  184. 182NorwoodOhio, United States
    791.6×
  185. 182SpartanburgSouth Carolina, United States
    791.6×
  186. 186HualquiBiobio, Chile
    791.6×
  187. 186EdgewoodMaryland, United States
    791.6×
  188. 188Ecatepec de MorelosMéxico, Mexico
    781.6×
  189. 188PhiladelphiaPennsylvania, United States
    781.6×
  190. 188MedinaOhio, United States
    781.6×
  191. 191CauquenesMaule Region, Chile
    781.6×
  192. 192ChiguayanteBiobio, Chile
    781.6×
  193. 192Grand RapidsMichigan, United States
    781.6×
  194. 192McKeesportPennsylvania, United States
    781.6×
  195. 195Puente AltoSantiago Metropolitan, Chile
    781.6×
  196. 195LancasterPennsylvania, United States
    781.6×
  197. 197GreenvilleSouth Carolina, United States
    781.6×
  198. 197Candler-McAfeeGeorgia, United States
    781.6×
  199. 199PinetownKwaZulu-Natal, South Africa
    771.6×
  200. 199NewarkDelaware, United States
    771.6×

Top 200 of 1,568 shown.

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

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SmogRank, most polluted cities, PM2.5, June 9, 2023, smogrank.com/history/2023-06-09 (accessed 2 Oct 2026).

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