SmogRank / History / September 6, 2023

Most polluted cities on September 6, 2023

1,827 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 82.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 6, 2023. All episodes.

← Lahore 82.5 µg/m³ 80 µg/m³15 WHO 24-hour guideline
Every city ranked for September 6, 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. 1Lahorelow-cost sensorsPunjab, Pakistan
    1705.5×
  2. 2AlexandriaAlexandria, Egypt
    1675.2×
  3. 3XonacatlánMéxico, Mexico
    1624.8×
  4. 4TopekaKansas, United States
    1624.8×
  5. 5Grand IslandNebraska, United States
    1624.7×
  6. 6LincolnNebraska, United States
    1614.7×
  7. 7Rapid CitySouth Dakota, United States
    1594.5×
  8. 8BeijingBeijing, China
    1574.3×
  9. 9EdmontonAlberta, Canada
    1564.2×
  10. 10WichitaKansas, United States
    1554.1×
  11. 11OmahaNebraska, United States
    1533.9×
  12. 11ReginaSaskatchewan, Canada
    1533.9×
  13. 11Swift CurrentSaskatchewan, Canada
    1533.9×
  14. 14BellevueNebraska, United States
    1523.8×
  15. 15DerbyKansas, United States
    1513.7×
  16. 16CoyhaiqueAysén, Chile
    1453.6×
  17. 17SalamancaCastille and León, Spain
    1423.5×
  18. 17Sioux FallsSouth Dakota, United States
    1423.5×
  19. 19HanoiHanoi, Vietnam
    1423.5×
  20. 20Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1423.5×
  21. 21BrookingsSouth Dakota, United States
    1413.4×
  22. 22WatertownSouth Dakota, United States
    1373.4×
  23. 23DushanbeDushanbe, Tajikistan
    1343.3×
  24. 24ZapopanJalisco, Mexico
    1333.2×
  25. 25KigaliKigali, Rwanda
    1333.2×
  26. 26JakartaJakarta, Indonesia
    1313.2×
  27. 27Dhakalow-cost sensorsDhaka Division, Bangladesh
    1293.1×
  28. 28SantiagoSantiago Metropolitan, Chile
    1233.0×
  29. 28Kansas CityKansas, United States
    1233.0×
  30. 30Victoria de DurangoDurango, Mexico
    1233.0×
  31. 31Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1222.9×
  32. 32GilletteWyoming, United States
    1212.9×
  33. 33Ponca CityOklahoma, United States
    1202.9×
  34. 34Fort St. JohnBritish Columbia, Canada
    1192.8×
  35. 35OlatheKansas, United States
    1172.8×
  36. 36Puente AltoSantiago Metropolitan, Chile
    1132.7×
  37. 37Saint JosephMissouri, United States
    1112.6×
  38. 38EdmundstonNew Brunswick, Canada
    1112.6×
  39. 39Grande PrairieAlberta, Canada
    1102.6×
  40. 40NairobiNairobi County, Kenya
    1092.6×
  41. 40LibertyMissouri, United States
    1092.6×
  42. 42MexicaliBaja California, Mexico
    1082.6×
  43. 43BakuBaki, Azerbaijan
    1062.5×
  44. 44N'DjamenaN’Djaména, Chad
    1042.4×
  45. 45West FargoNorth Dakota, United States
    1032.4×
  46. 46TalaganteSantiago Metropolitan, Chile
    1032.4×
  47. 47Santa Anita - Los FicusLima region, Peru
    1012.4×
  48. 48AnkenyIowa, United States
    1012.4×
  49. 48Lexingtonlow-cost sensorsMassachusetts, United States
    1012.4×
  50. 50AberdeenSouth Dakota, United States
    1002.4×
  51. 51RengoO'Higgins Region, Chile
    992.3×
  52. 52Des MoinesIowa, United States
    992.3×
  53. 53Addis AbabaAddis Ababa, Ethiopia
    982.3×
  54. 53CuranilahueBiobio, Chile
    982.3×
  55. 55SherbrookeQuebec, Canada
    972.2×
  56. 56CuricóMaule Region, Chile
    952.2×
  57. 57PortlandMaine, United States
    952.2×
  58. 57SaskatoonSaskatchewan, Canada
    952.2×
  59. 59JenksOklahoma, United States
    952.2×
  60. 60AntananarivoAnalamanga, Madagascar
    942.2×
  61. 61RancaguaO'Higgins Region, Chile
    942.1×
  62. 62Puerto AysénAysén, Chile
    942.1×
  63. 63Medicine HatAlberta, Canada
    942.1×
  64. 64Wan ChaiWan Chai, Hong Kong
    932.1×
  65. 65Kansas CityMissouri, United States
    932.1×
  66. 66AugustaMaine, United States
    912.0×
  67. 67St. AlbertAlberta, Canada
    902.0×
  68. 68SarajevoFederation of B&H, Bosnia and Herzegovina
    902.0×
  69. 69BangorMaine, United States
    902.0×
  70. 69Prince GeorgeBritish Columbia, Canada
    902.0×
  71. 71OsornoLos Lagos Region, Chile
    892.0×
  72. 71BillingsMontana, United States
    892.0×
  73. 71Sherwood ParkAlberta, Canada
    892.0×
  74. 74IyoEhime, Japan
    881.9×
  75. 74LimaLima Province, Peru
    881.9×
  76. 76DunkirkHauts-de-France, France
    861.9×
  77. 77Iowa CityIowa, United States
    851.8×
  78. 78Canvey IslandEngland, United Kingdom
    851.8×
  79. 79Karachilow-cost sensorsSindh, Pakistan
    841.8×
  80. 79L'Ancienne-LoretteQuebec, Canada
    841.8×
  81. 81Prince AlbertSaskatchewan, Canada
    841.8×
  82. 82HyderabadTelangana, India
    841.8×
  83. 82Ulu BedokSingapore
    841.8×
  84. 82Saint CloudMinnesota, United States
    841.8×
  85. 85SaguenayQuebec, Canada
    831.8×
  86. 86Saint-NazairePays de la Loire, France
    831.8×
  87. 87RaymoreMissouri, United States
    831.7×
  88. 88Kampalalow-cost sensorsCentral Region, Uganda
    821.7×
  89. 88HualquiBiobio, Chile
    821.7×
  90. 90QuébecQuebec, Canada
    821.7×
  91. 91QuillotaValparaiso, Chile
    811.7×
  92. 92GraysEngland, United Kingdom
    801.7×
  93. 92Viña del MarValparaiso, Chile
    801.7×
  94. 94PristinaPristina, Kosovo
    801.6×
  95. 95San Francisco TlalcilalcalpanMéxico, Mexico
    791.6×
  96. 95EdmondOklahoma, United States
    791.6×
  97. 97GuangzhouGuangdong, China
    791.6×
  98. 98Ang Mo Kio New TownSingapore
    791.6×
  99. 99CelayaGuanajuato, Mexico
    781.6×
  100. 100Sau Mau PingKwun Tong District, Hong Kong
    781.6×
  101. 101Red DeerAlberta, Canada
    781.6×
  102. 102PortsmouthNew Hampshire, United States
    771.5×
  103. 103AngersPays de la Loire, France
    771.5×
  104. 103BostonMassachusetts, United States
    771.5×
  105. 105CuencaCastille-La Mancha, Spain
    771.5×
  106. 105SpringfieldIllinois, United States
    771.5×
  107. 107AntofagastaAntofagasta, Chile
    771.5×
  108. 108FanlingNorth District, Hong Kong
    761.5×
  109. 108MooreOklahoma, United States
    761.5×
  110. 110BloomingtonIllinois, United States
    761.5×
  111. 111AlençonNormandy, France
    761.5×
  112. 112PeoriaIllinois, United States
    761.5×
  113. 113BrocktonMassachusetts, United States
    751.5×
  114. 114DagenhamEngland, United Kingdom
    751.5×
  115. 114Oklahoma CityOklahoma, United States
    751.5×
  116. 114LewistonMaine, United States
    751.5×
  117. 117ProvidenceRhode Island, United States
    751.5×
  118. 118TocopillaAntofagasta, Chile
    751.5×
  119. 119Tuen MunTuen Mun, Hong Kong
    741.4×
  120. 120DelhiDelhi, India
    741.4×
  121. 120Sham Shui PoSham Shui Po District, Hong Kong
    741.4×
  122. 120Naucalpan de JuárezMéxico, Mexico
    741.4×
  123. 120Fort McMurrayAlberta, Canada
    741.4×
  124. 120ShawiniganQuebec, Canada
    741.4×
  125. 120Trois-RivièresQuebec, Canada
    741.4×
  126. 126NottinghamEngland, United Kingdom
    741.4×
  127. 126QuinteroValparaiso, Chile
    741.4×
  128. 128CoquimboCoquimbo Region, Chile
    741.4×
  129. 129Sha TinSha Tin, Hong Kong
    731.4×
  130. 129MuscatineIowa, United States
    731.4×
  131. 131BilbaoBasque Country, Spain
    731.4×
  132. 131SheridanWyoming, United States
    731.4×
  133. 133DavenportIowa, United States
    731.4×
  134. 134LondonEngland, United Kingdom
    731.4×
  135. 134QuincyMassachusetts, United States
    731.4×
  136. 136NantesPays de la Loire, France
    731.4×
  137. 136Laudio / LlodioBasque Country, Spain
    731.4×
  138. 136TemucoAraucania, Chile
    731.4×
  139. 139AlmeríaAndalusia, Spain
    721.4×
  140. 139BexleyEngland, United Kingdom
    721.4×
  141. 141ConcónValparaiso, Chile
    721.4×
  142. 142Kathmandulow-cost sensorsBagmati Province, Nepal
    721.3×
  143. 143Ciudad NezahualcoyotlMéxico, Mexico
    711.3×
  144. 143CholulaPuebla, Mexico
    711.3×
  145. 143TlaquepaqueJalisco, Mexico
    711.3×
  146. 143Ciudad ApodacaNuevo León, Mexico
    711.3×
  147. 143DecaturIllinois, United States
    711.3×
  148. 143HaverhillMassachusetts, United States
    711.3×
  149. 149Kwai ChungKwai Tsing District, Hong Kong
    711.3×
  150. 149Villa Poeta José Gálvez BarrenecheaLima region, Peru
    711.3×
  151. 151Queenstown Estatelow-cost sensorsSingapore
    711.3×
  152. 151DieppeNormandy, France
    711.3×
  153. 151MolineIllinois, United States
    711.3×
  154. 154Tsuen WanTsuen Wan, Hong Kong
    711.3×
  155. 155CouëronPays de la Loire, France
    711.3×
  156. 156ChennaiTamil Nadu, India
    701.3×
  157. 156Mong KokYau Tsim Mong District, Hong Kong
    701.3×
  158. 158Fall RiverMassachusetts, United States
    701.3×
  159. 159San Tung Chung HangIslands, Hong Kong
    701.3×
  160. 159WaterlooIowa, United States
    701.3×
  161. 161Gasteiz / VitoriaBasque Country, Spain
    701.3×
  162. 161Puerto MonttLos Lagos Region, Chile
    701.3×
  163. 161Ciudad JuárezChihuahua, Mexico
    701.3×
  164. 161Toms RiverNew Jersey, United States
    701.3×
  165. 161LynnMassachusetts, United States
    701.3×
  166. 161Fort CollinsColorado, United States
    701.3×
  167. 167ShenyangLiaoning, China
    701.3×
  168. 168MóstolesMadrid, Spain
    691.3×
  169. 169LourdesOccitanie, France
    691.3×
  170. 169ValdemoroMadrid, Spain
    691.3×
  171. 169Los ÁngelesBiobio, Chile
    691.3×
  172. 169CopiapóAtacama, Chile
    691.3×
  173. 173Tai PoTai Po, Hong Kong
    691.3×
  174. 174TalcaMaule Region, Chile
    691.2×
  175. 174Puerto VarasLos Lagos Region, Chile
    691.2×
  176. 176TalcahuanoBiobio, Chile
    691.2×
  177. 176RaleighNorth Carolina, United States
    691.2×
  178. 176LawtonOklahoma, United States
    691.2×
  179. 179Le MansPays de la Loire, France
    681.2×
  180. 179McAlesterOklahoma, United States
    681.2×
  181. 179West MifflinPennsylvania, United States
    681.2×
  182. 182BamakoBamako, Mali
    681.2×
  183. 182La SerenaCoquimbo Region, Chile
    681.2×
  184. 182CoronelBiobio, Chile
    681.2×
  185. 182LongmontColorado, United States
    681.2×
  186. 186Tin Shui WaiYuen Long, Hong Kong
    681.2×
  187. 186NaplesCampania, Italy
    681.2×
  188. 186AricaArica y Parinacota Region, Chile
    681.2×
  189. 186Gómez PalacioDurango, Mexico
    681.2×
  190. 190PylaíaCentral Macedonia, Greece
    681.2×
  191. 190Samut SakhonSamut Sakhon, Thailand
    681.2×
  192. 192GreeleyColorado, United States
    671.2×
  193. 193CanterburyEngland, United Kingdom
    671.2×
  194. 193LowellMassachusetts, United States
    671.2×
  195. 195San Andrés TuxtlaVeracruz, Mexico
    671.2×
  196. 195SpringdaleArkansas, United States
    671.2×
  197. 197VannesBrittany, France
    671.2×
  198. 197PoitiersNew Aquitaine, France
    671.2×
  199. 197DurangoBasque Country, Spain
    671.2×
  200. 197TolucaMéxico, Mexico
    671.2×

Top 200 of 1,827 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, September 6, 2023, smogrank.com/history/2023-09-06 (accessed 2 Oct 2026).

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