SmogRank / History / September 16, 2023

Most polluted cities on September 16, 2023

2,022 cities ranked by their average PM2.5 over the day; the worst was Grande Prairie, Canada, at 277.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 16, 2023. All episodes.

← Grande Prairie 277.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for September 16, 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. 1Grande PrairieAlberta, Canada
    40418.5×
  2. 2Prince GeorgeBritish Columbia, Canada
    2199.6×
  3. 3EdmontonAlberta, Canada
    1816.6×
  4. 4AlgiersAlgiers, Algeria
    1745.8×
  5. 5ZapopanJalisco, Mexico
    1695.4×
  6. 6ReginaSaskatchewan, Canada
    1614.6×
  7. 7DushanbeDushanbe, Tajikistan
    1604.5×
  8. 8Grants PassOregon, United States
    1564.2×
  9. 9BeijingBeijing, China
    1533.9×
  10. 10St. AlbertAlberta, Canada
    1533.8×
  11. 11AlexandriaAlexandria, Egypt
    1373.3×
  12. 12Dhakalow-cost sensorsDhaka Division, Bangladesh
    1353.3×
  13. 13Ciudad NezahualcoyotlMéxico, Mexico
    1353.3×
  14. 14Fort McMurrayAlberta, Canada
    1333.2×
  15. 15Sherwood ParkAlberta, Canada
    1303.2×
  16. 16SaskatoonSaskatchewan, Canada
    1283.1×
  17. 17JakartaJakarta, Indonesia
    1263.0×
  18. 18Kampalalow-cost sensorsCentral Region, Uganda
    1222.9×
  19. 19CoyhaiqueAysén, Chile
    1202.9×
  20. 20Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1192.9×
  21. 20MexicaliBaja California, Mexico
    1192.9×
  22. 22PietermaritzburgKwaZulu-Natal, South Africa
    1192.8×
  23. 23AberdeenSouth Dakota, United States
    1172.8×
  24. 24Lahorelow-cost sensorsPunjab, Pakistan
    1132.7×
  25. 25RedmondOregon, United States
    1122.7×
  26. 26Prince AlbertSaskatchewan, Canada
    1082.6×
  27. 27Puerto VarasLos Lagos Region, Chile
    1062.5×
  28. 28Puerto MonttLos Lagos Region, Chile
    1042.5×
  29. 29Addis AbabaAddis Ababa, Ethiopia
    1042.4×
  30. 29Quezon Citylow-cost sensorsNational Capital Region, Philippines
    1042.4×
  31. 31Villa Poeta José Gálvez BarrenecheaLima region, Peru
    1032.4×
  32. 32La UniónLos Ríos Region, Chile
    1022.4×
  33. 33Şabāḩ as SālimMubārak al Kabīr, Kuwait
    952.2×
  34. 34OsornoLos Lagos Region, Chile
    942.1×
  35. 35HanoiHanoi, Vietnam
    932.1×
  36. 36PristinaPristina, Kosovo
    932.1×
  37. 37SarajevoFederation of B&H, Bosnia and Herzegovina
    902.0×
  38. 38CuranilahueBiobio, Chile
    892.0×
  39. 39MedfordOregon, United States
    892.0×
  40. 40West FargoNorth Dakota, United States
    871.9×
  41. 41LimaLima Province, Peru
    861.9×
  42. 42BamakoBamako, Mali
    851.8×
  43. 42XonacatlánMéxico, Mexico
    851.8×
  44. 42IndioCalifornia, United States
    851.8×
  45. 45PolokwaneLimpopo, South Africa
    851.8×
  46. 45Sioux FallsSouth Dakota, United States
    851.8×
  47. 47BrookingsSouth Dakota, United States
    841.8×
  48. 48NairobiNairobi County, Kenya
    841.8×
  49. 49Puente AltoSantiago Metropolitan, Chile
    831.7×
  50. 50ShenyangLiaoning, China
    821.7×
  51. 51NacimientoBiobio, Chile
    821.7×
  52. 52Islamabadlow-cost sensorsIslamabad, Pakistan
    821.7×
  53. 52FontanaCalifornia, United States
    821.7×
  54. 54Ulu BedokSingapore
    821.7×
  55. 55Puerto AysénAysén, Chile
    811.7×
  56. 56AntofagastaAntofagasta, Chile
    811.7×
  57. 56Santa Anita - Los FicusLima region, Peru
    811.7×
  58. 58San Francisco TlalcilalcalpanMéxico, Mexico
    801.7×
  59. 59SantiagoSantiago Metropolitan, Chile
    801.6×
  60. 60BendOregon, United States
    791.6×
  61. 60Fort St. JohnBritish Columbia, Canada
    791.6×
  62. 62AsprópyrgosAttica, Greece
    791.6×
  63. 62AshlandOregon, United States
    791.6×
  64. 64Almatylow-cost sensorsAlmaty, Kazakhstan
    781.6×
  65. 65DelhiDelhi, India
    771.6×
  66. 65PattaniPattani, Thailand
    771.6×
  67. 65TolucaMéxico, Mexico
    771.6×
  68. 68YalaYala, Thailand
    771.5×
  69. 68CoquimboCoquimbo Region, Chile
    771.5×
  70. 70Kuala LumpurKuala Lumpur, Malaysia
    771.5×
  71. 71BanningCalifornia, United States
    761.5×
  72. 72CoronelBiobio, Chile
    761.5×
  73. 73San Salvador TizatlalliMéxico, Mexico
    751.5×
  74. 74Jurupa ValleyCalifornia, United States
    751.5×
  75. 74San Francisco De BorjaLima region, Peru
    751.5×
  76. 76Hat YaiSongkhla, Thailand
    741.4×
  77. 76CopiapóAtacama, Chile
    741.4×
  78. 78Mexico CityMexico City, Mexico
    741.4×
  79. 79GuangzhouGuangdong, China
    741.4×
  80. 79NakatsuOita, Japan
    741.4×
  81. 79QuillotaValparaiso, Chile
    741.4×
  82. 82RichmondCalifornia, United States
    731.4×
  83. 83UžiceCentral Serbia, Serbia
    731.4×
  84. 83ConcónValparaiso, Chile
    731.4×
  85. 85AnkenyIowa, United States
    721.4×
  86. 86DuluthMinnesota, United States
    721.4×
  87. 87MarratxíBalearic Islands, Spain
    721.4×
  88. 87ValdiviaLos Ríos Region, Chile
    721.4×
  89. 87HernandoMississippi, United States
    721.4×
  90. 87RiversideCalifornia, United States
    721.4×
  91. 91BetongYala, Thailand
    721.4×
  92. 91QuinteroValparaiso, Chile
    721.4×
  93. 91La SerenaCoquimbo Region, Chile
    721.4×
  94. 91CuricóMaule Region, Chile
    721.4×
  95. 95MinamataKumamoto, Japan
    711.3×
  96. 95MinneapolisMinnesota, United States
    711.3×
  97. 95La Crescenta-Montroselow-cost sensorsCalifornia, United States
    711.3×
  98. 98BurnsvilleMinnesota, United States
    711.3×
  99. 99ShakopeeMinnesota, United States
    711.3×
  100. 100AthensAttica, Greece
    701.3×
  101. 100AstanaAstana, Kazakhstan
    701.3×
  102. 100SadaoSongkhla, Thailand
    701.3×
  103. 100HonmachiKumamoto, Japan
    701.3×
  104. 100Ang Mo Kio New TownSingapore
    701.3×
  105. 100PalmaBalearic Islands, Spain
    701.3×
  106. 100NaplesCampania, Italy
    701.3×
  107. 107Ban Samae DamBangkok, Thailand
    701.3×
  108. 107KrakówLesser Poland, Poland
    701.3×
  109. 109Novi PazarCentral Serbia, Serbia
    701.3×
  110. 109AlessandriaPiedmont, Italy
    701.3×
  111. 111Queenstown Estatelow-cost sensorsSingapore
    701.3×
  112. 112PiraeusAttica, Greece
    701.3×
  113. 112AntananarivoAnalamanga, Madagascar
    701.3×
  114. 112Naucalpan de JuárezMéxico, Mexico
    701.3×
  115. 115KolkataWest Bengal, India
    691.3×
  116. 115NarathiwatNarathiwat, Thailand
    691.3×
  117. 115TocopillaAntofagasta, Chile
    691.3×
  118. 118Karachilow-cost sensorsSindh, Pakistan
    691.3×
  119. 118RochesterMinnesota, United States
    691.3×
  120. 118Saint MichaelMinnesota, United States
    691.3×
  121. 121Los ÁngelesBiobio, Chile
    691.3×
  122. 122GuadalajaraJalisco, Mexico
    691.2×
  123. 123Viña del MarValparaiso, Chile
    691.2×
  124. 123San CarlosÑuble, Chile
    691.2×
  125. 123FlorenceSouth Carolina, United States
    691.2×
  126. 123SuperiorWisconsin, United States
    691.2×
  127. 127TalaganteSantiago Metropolitan, Chile
    681.2×
  128. 127RancaguaO'Higgins Region, Chile
    681.2×
  129. 127AricaArica y Parinacota Region, Chile
    681.2×
  130. 127KamloopsBritish Columbia, Canada
    681.2×
  131. 131ChennaiTamil Nadu, India
    681.2×
  132. 131SalamancaGuanajuato, Mexico
    681.2×
  133. 133Bang NaBangkok, Thailand
    681.2×
  134. 133PueblaPuebla, Mexico
    681.2×
  135. 133TemucoAraucania, Chile
    681.2×
  136. 133JacksonMississippi, United States
    681.2×
  137. 133Des MoinesIowa, United States
    681.2×
  138. 138ŌtsukiYamanashi, Japan
    671.2×
  139. 138NogalesSonora, Mexico
    671.2×
  140. 138Apple ValleyMinnesota, United States
    671.2×
  141. 141TsurusakiOita, Japan
    671.2×
  142. 141Saint CloudMinnesota, United States
    671.2×
  143. 141CalexicoCalifornia, United States
    671.2×
  144. 144GlendoraCalifornia, United States
    671.2×
  145. 145BrakpanGauteng, South Africa
    671.2×
  146. 145DetroitMichigan, United States
    671.2×
  147. 147ThessaloníkiCentral Macedonia, Greece
    671.2×
  148. 147ValjevoCentral Serbia, Serbia
    671.2×
  149. 149KasaokaOkayama, Japan
    661.2×
  150. 149TalcahuanoBiobio, Chile
    661.2×
  151. 151ChikuseiIbaraki, Japan
    661.2×
  152. 152Ciudad JuárezChihuahua, Mexico
    661.1×
  153. 152BellevueNebraska, United States
    661.1×
  154. 154East Saint LouisIllinois, United States
    661.1×
  155. 155TakasakiGunma, Japan
    661.1×
  156. 155TakahashiOkayama, Japan
    661.1×
  157. 155MaassluisSouth Holland, The Netherlands
    661.1×
  158. 155HualquiBiobio, Chile
    661.1×
  159. 155CalamaAntofagasta, Chile
    661.1×
  160. 155OmahaNebraska, United States
    661.1×
  161. 155Red DeerAlberta, Canada
    661.1×
  162. 162DębicaSubcarpathia, Poland
    661.1×
  163. 162RidderkerkSouth Holland, The Netherlands
    661.1×
  164. 164ColomboWestern Province, Sri Lanka
    651.1×
  165. 165KurashikiOkayama, Japan
    651.1×
  166. 165Canvey IslandEngland, United Kingdom
    651.1×
  167. 167RengoO'Higgins Region, Chile
    651.1×
  168. 168LazarevacCentral Serbia, Serbia
    651.1×
  169. 168SōjaOkayama, Japan
    651.1×
  170. 168HitoyoshiKumamoto, Japan
    651.1×
  171. 171IyoEhime, Japan
    641.1×
  172. 171Saint PaulMinnesota, United States
    641.1×
  173. 171San Pedro de la PazBiobio, Chile
    641.1×
  174. 174KanchanaburiKanchanaburi, Thailand
    641.1×
  175. 174OkayamaOkayama, Japan
    641.1×
  176. 176NišCentral Serbia, Serbia
    641.1×
  177. 176ŌmeTokyo, Japan
    641.1×
  178. 176KobayashiMiyazaki, Japan
    641.1×
  179. 176NottinghamEngland, United Kingdom
    641.1×
  180. 180PančevoVojvodina, Serbia
    641.1×
  181. 180SatunSatun, Thailand
    641.1×
  182. 180Tottori-shiTottori, Japan
    641.1×
  183. 180's-GravenzandeSouth Holland, The Netherlands
    641.1×
  184. 180ChillánÑuble, Chile
    641.1×
  185. 180SarniaOntario, Canada
    641.1×
  186. 180KirishimaKagoshima, Japan
    641.1×
  187. 187HyderabadTelangana, India
    641.1×
  188. 187TamanaKumamoto, Japan
    641.1×
  189. 187NobeokaMiyazaki, Japan
    641.1×
  190. 187CardiffWales, United Kingdom
    641.1×
  191. 187AnconaThe Marches, Italy
    641.1×
  192. 192SmederevoCentral Serbia, Serbia
    631.1×
  193. 192ConakryConakry, Guinea
    631.1×
  194. 194Botevgradlow-cost sensorsSofia, Bulgaria
    631.0×
  195. 194SalorTashkent Region, Uzbekistan
    631.0×
  196. 194GothenburgVästra Götaland, Sweden
    631.0×
  197. 194OstravaMoravian-Silesian Region, Czechia
    631.0×
  198. 198PirotCentral Serbia, Serbia
    631.0×
  199. 198SanoTochigi, Japan
    631.0×
  200. 198TlaquepaqueJalisco, Mexico
    631.0×

Top 200 of 2,022 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 16, 2023, smogrank.com/history/2023-09-16 (accessed 2 Oct 2026).

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