SmogRank / History / September 2, 2023

Most polluted cities on September 2, 2023

1,843 cities ranked by their average PM2.5 over the day; the worst was Fort McMurray, Canada, at 306.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 2, 2023. All episodes.

← Fort McMurray 306.5 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for September 2, 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. 1Fort McMurrayAlberta, Canada
    46220.4×
  2. 2Fort St. JohnBritish Columbia, Canada
    23010.3×
  3. 3Puerto VarasLos Lagos Region, Chile
    2159.3×
  4. 4OsornoLos Lagos Region, Chile
    1998.3×
  5. 5EdmontonAlberta, Canada
    1978.1×
  6. 6SaskatoonSaskatchewan, Canada
    1867.0×
  7. 7Prince AlbertSaskatchewan, Canada
    1786.3×
  8. 8DushanbeDushanbe, Tajikistan
    1756.0×
  9. 9Dhakalow-cost sensorsDhaka Division, Bangladesh
    1756.0×
  10. 10ReginaSaskatchewan, Canada
    1695.5×
  11. 11La UniónLos Ríos Region, Chile
    1655.1×
  12. 12Swift CurrentSaskatchewan, Canada
    1655.0×
  13. 13JakartaJakarta, Indonesia
    1554.1×
  14. 14KolkataWest Bengal, India
    1554.1×
  15. 14Sherwood ParkAlberta, Canada
    1554.1×
  16. 16St. AlbertAlberta, Canada
    1544.0×
  17. 17Grande PrairieAlberta, Canada
    1533.9×
  18. 18San CarlosÑuble, Chile
    1493.7×
  19. 19NacimientoBiobio, Chile
    1473.6×
  20. 20Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1463.6×
  21. 21Puerto MonttLos Lagos Region, Chile
    1433.5×
  22. 22Prince GeorgeBritish Columbia, Canada
    1363.3×
  23. 23HyderabadTelangana, India
    1363.3×
  24. 24HanoiHanoi, Vietnam
    1363.3×
  25. 25Kampalalow-cost sensorsCentral Region, Uganda
    1353.3×
  26. 26Red DeerAlberta, Canada
    1343.3×
  27. 27TemucoAraucania, Chile
    1333.2×
  28. 28Islamabadlow-cost sensorsIslamabad, Pakistan
    1222.9×
  29. 29Addis AbabaAddis Ababa, Ethiopia
    1212.9×
  30. 30CosladaMadrid, Spain
    1172.8×
  31. 31Lahorelow-cost sensorsPunjab, Pakistan
    1152.7×
  32. 32CuranilahueBiobio, Chile
    1132.7×
  33. 33HualquiBiobio, Chile
    1062.5×
  34. 33ChillánÑuble, Chile
    1062.5×
  35. 35TalcahuanoBiobio, Chile
    1052.5×
  36. 36ValdiviaLos Ríos Region, Chile
    1052.5×
  37. 36CoyhaiqueAysén, Chile
    1052.5×
  38. 38Puerto AysénAysén, Chile
    1042.5×
  39. 39Los ÁngelesBiobio, Chile
    1042.4×
  40. 40RancaguaO'Higgins Region, Chile
    1022.4×
  41. 41CuricóMaule Region, Chile
    1012.4×
  42. 42RengoO'Higgins Region, Chile
    1012.4×
  43. 43LimaLima Province, Peru
    1002.4×
  44. 44ToméBiobio, Chile
    992.3×
  45. 44SantiagoSantiago Metropolitan, Chile
    992.3×
  46. 46DelhiDelhi, India
    992.3×
  47. 47MexicaliBaja California, Mexico
    972.3×
  48. 48Puente AltoSantiago Metropolitan, Chile
    972.2×
  49. 49NairobiNairobi County, Kenya
    962.2×
  50. 49CauquenesMaule Region, Chile
    962.2×
  51. 51SofiaSofia-Capital, Bulgaria
    962.2×
  52. 52CuernavacaMorelos, Mexico
    952.2×
  53. 53KigaliKigali, Rwanda
    952.2×
  54. 54CoronelBiobio, Chile
    932.1×
  55. 55PristinaPristina, Kosovo
    932.1×
  56. 56Ulu BedokSingapore
    932.1×
  57. 57Santa Anita - Los FicusLima region, Peru
    922.1×
  58. 58QuillotaValparaiso, Chile
    902.0×
  59. 59BeijingBeijing, China
    902.0×
  60. 59TalaganteSantiago Metropolitan, Chile
    902.0×
  61. 61ConcónValparaiso, Chile
    902.0×
  62. 62BamakoBamako, Mali
    892.0×
  63. 63Victoria de DurangoDurango, Mexico
    892.0×
  64. 64ZapopanJalisco, Mexico
    892.0×
  65. 65ConcepciónBiobio, Chile
    881.9×
  66. 65TlaquepaqueJalisco, Mexico
    881.9×
  67. 67Ang Mo Kio New TownSingapore
    881.9×
  68. 68QuinteroValparaiso, Chile
    871.9×
  69. 69San Francisco TlalcilalcalpanMéxico, Mexico
    871.9×
  70. 70XonacatlánMéxico, Mexico
    871.9×
  71. 70TalcaMaule Region, Chile
    871.9×
  72. 72AricaArica y Parinacota Region, Chile
    851.8×
  73. 73Şabāḩ as SālimMubārak al Kabīr, Kuwait
    841.8×
  74. 74SarajevoFederation of B&H, Bosnia and Herzegovina
    841.8×
  75. 75YangonYangon, Myanmar
    831.8×
  76. 75ShenyangLiaoning, China
    831.8×
  77. 77Samut SakhonSamut Sakhon, Thailand
    831.7×
  78. 78Kathmandulow-cost sensorsBagmati Province, Nepal
    821.7×
  79. 78San Salvador TizatlalliMéxico, Mexico
    821.7×
  80. 80AntofagastaAntofagasta, Chile
    821.7×
  81. 81TolucaMéxico, Mexico
    811.7×
  82. 82Tha BoNong Khai, Thailand
    801.6×
  83. 83Viña del MarValparaiso, Chile
    791.6×
  84. 84Nong KhaemBangkok, Thailand
    781.6×
  85. 85Port ArthurTexas, United States
    781.6×
  86. 86San Pedro de la PazBiobio, Chile
    771.5×
  87. 87SaltilloCoahuila, Mexico
    761.5×
  88. 88ShreveportLouisiana, United States
    761.5×
  89. 89Karachilow-cost sensorsSindh, Pakistan
    751.5×
  90. 90ThessaloníkiCentral Macedonia, Greece
    751.5×
  91. 91Villa Poeta José Gálvez BarrenecheaLima region, Peru
    751.5×
  92. 92N'DjamenaN’Djaména, Chad
    741.4×
  93. 92CholulaPuebla, Mexico
    741.4×
  94. 92Ciudad ApodacaNuevo León, Mexico
    741.4×
  95. 95GuangzhouGuangdong, China
    731.4×
  96. 95Naucalpan de JuárezMéxico, Mexico
    731.4×
  97. 95TocopillaAntofagasta, Chile
    731.4×
  98. 98Kuala LumpurKuala Lumpur, Malaysia
    731.4×
  99. 99GuadalajaraJalisco, Mexico
    731.4×
  100. 100Le RobertMartinique, Martinique
    721.4×
  101. 101CoquimboCoquimbo Region, Chile
    711.3×
  102. 102Gómez PalacioDurango, Mexico
    711.3×
  103. 102ConroeTexas, United States
    711.3×
  104. 104San Francisco De BorjaLima region, Peru
    711.3×
  105. 105Fort-de-FranceMartinique, Martinique
    711.3×
  106. 106BakuBaki, Azerbaijan
    711.3×
  107. 106ChennaiTamil Nadu, India
    711.3×
  108. 108Queenstown Estatelow-cost sensorsSingapore
    701.3×
  109. 108KamloopsBritish Columbia, Canada
    701.3×
  110. 110PérigueuxNew Aquitaine, France
    701.3×
  111. 110Le LamentinMartinique, Martinique
    701.3×
  112. 112Khlong LuangPathum Thani, Thailand
    701.3×
  113. 112CelayaGuanajuato, Mexico
    701.3×
  114. 114TexarkanaTexas, United States
    691.2×
  115. 115AntananarivoAnalamanga, Madagascar
    691.2×
  116. 116Phra PradaengSamut Prakan, Thailand
    681.2×
  117. 117EvergemFlanders, Belgium
    681.2×
  118. 117Ciudad NezahualcoyotlMéxico, Mexico
    681.2×
  119. 117Ciudad JuárezChihuahua, Mexico
    681.2×
  120. 120SalamancaGuanajuato, Mexico
    671.2×
  121. 121CopiapóAtacama, Chile
    671.2×
  122. 122BangkokBangkok, Thailand
    671.2×
  123. 122SliemaTas-Sliema, Malta
    671.2×
  124. 124Santa CatarinaNuevo León, Mexico
    671.2×
  125. 125ŁukówLublin, Poland
    671.2×
  126. 125BelgradeCentral Serbia, Serbia
    671.2×
  127. 127ChiguayanteBiobio, Chile
    661.2×
  128. 128TetovoTetovo, North Macedonia
    661.1×
  129. 129KaliszGreater Poland, Poland
    661.1×
  130. 129KelownaBritish Columbia, Canada
    661.1×
  131. 131La SerenaCoquimbo Region, Chile
    651.1×
  132. 131BrandonManitoba, Canada
    651.1×
  133. 133West FargoNorth Dakota, United States
    651.1×
  134. 134Samut PrakanSamut Prakan, Thailand
    651.1×
  135. 134MonterreyNuevo León, Mexico
    651.1×
  136. 136JeddahMecca Region, Saudi Arabia
    651.1×
  137. 136PueblaPuebla, Mexico
    651.1×
  138. 136San Luis de la PazGuanajuato, Mexico
    651.1×
  139. 139IzegemFlanders, Belgium
    641.1×
  140. 140Mueang NonthaburiNonthaburi, Thailand
    641.1×
  141. 140RadomskoŁódź Voivodeship, Poland
    641.1×
  142. 142Bang KapiBangkok, Thailand
    641.1×
  143. 143Nakhon PathomNakhon Pathom, Thailand
    641.1×
  144. 143WichitaKansas, United States
    641.1×
  145. 143WatertownSouth Dakota, United States
    641.1×
  146. 146WaregemFlanders, Belgium
    631.1×
  147. 146LotaBiobio, Chile
    631.1×
  148. 146Great FallsMontana, United States
    631.1×
  149. 149DerbyKansas, United States
    631.0×
  150. 150CártamaAndalusia, Spain
    631.0×
  151. 151Mexico CityMexico City, Mexico
    631.0×
  152. 152DallasTexas, United States
    631.0×
  153. 152PasadenaTexas, United States
    631.0×
  154. 154PylaíaCentral Macedonia, Greece
    621.0×
  155. 154Tula de AllendeHidalgo, Mexico
    621.0×
  156. 154CalamaAntofagasta, Chile
    621.0×
  157. 157JenksOklahoma, United States
    621.0×
  158. 157EugeneOregon, United States
    621.0×
  159. 159MenenFlanders, Belgium
    621.0×
  160. 159São PauloSão Paulo, Brazil
    621.0×
  161. 161NišCentral Serbia, Serbia
    621.0×
  162. 162WoodlandsSingapore
    611.0×
  163. 162TulsaOklahoma, United States
    611.0×
  164. 162PentictonBritish Columbia, Canada
    611.0×
  165. 165BerlinState of Berlin, Germany
    611.0×
  166. 166WarsawMazovia, Poland
    611.0×
  167. 166KościanGreater Poland, Poland
    611.0×
  168. 166DuluthMinnesota, United States
    611.0×
  169. 169BitolaBitola, North Macedonia
    611.0×
  170. 169RoeselareFlanders, Belgium
    611.0×
  171. 169MostÚstí nad Labem Region, Czechia
    611.0×
  172. 169BolzanoTrentino-Alto Adige, Italy
    611.0×
  173. 173NeuenhagenBrandenburg, Germany
    611.0×
  174. 173Corpus ChristiTexas, United States
    611.0×
  175. 173Fort WorthTexas, United States
    611.0×
  176. 176NagaiYamagata, Japan
    610.9×
  177. 176GentFlanders, Belgium
    610.9×
  178. 176Ponca CityOklahoma, United States
    610.9×
  179. 179Santiago de QuerétaroQuerétaro, Mexico
    600.9×
  180. 179SquamishBritish Columbia, Canada
    600.9×
  181. 181AsprópyrgosAttica, Greece
    600.9×
  182. 181SkopjeGrad Skopje, North Macedonia
    600.9×
  183. 181TakasakiGunma, Japan
    600.9×
  184. 181KortrijkFlanders, Belgium
    600.9×
  185. 181College StationTexas, United States
    600.9×
  186. 186TeltowBrandenburg, Germany
    600.9×
  187. 186SeattleWashington, United States
    600.9×
  188. 188AthensAttica, Greece
    600.9×
  189. 188San Andrés TuxtlaVeracruz, Mexico
    600.9×
  190. 188Saint CloudMinnesota, United States
    600.9×
  191. 191KielceŚwiętokrzyskie, Poland
    600.9×
  192. 191HollandMichigan, United States
    600.9×
  193. 193ValdemoroMadrid, Spain
    590.9×
  194. 193TrentoTrentino-Alto Adige, Italy
    590.9×
  195. 193IndianapolisIndiana, United States
    590.9×
  196. 193BaytownTexas, United States
    590.9×
  197. 193EdinburgTexas, United States
    590.9×
  198. 193HoustonTexas, United States
    590.9×
  199. 193SaginawTexas, United States
    590.9×
  200. 200NaplesCampania, Italy
    590.9×

Top 200 of 1,843 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 2, 2023, smogrank.com/history/2023-09-02 (accessed 2 Oct 2026).

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