SmogRank / History / August 29, 2023

Most polluted cities on August 29, 2023

1,895 cities ranked by their average PM2.5 over the day; the worst was Puerto Varas, Chile, at 122.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 29, 2023. All episodes.

← Puerto Varas 122.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 29, 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. 1Puerto VarasLos Lagos Region, Chile
    1988.1×
  2. 2Grande PrairieAlberta, Canada
    1897.3×
  3. 3Ceglie MessapicaApulia, Italy
    1786.2×
  4. 4Prince AlbertSaskatchewan, Canada
    1745.9×
  5. 5Dhakalow-cost sensorsDhaka Division, Bangladesh
    1725.7×
  6. 6KamloopsBritish Columbia, Canada
    1705.6×
  7. 7KolkataWest Bengal, India
    1695.4×
  8. 8Fort St. JohnBritish Columbia, Canada
    1695.4×
  9. 9ReginaSaskatchewan, Canada
    1604.6×
  10. 10Fort McMurrayAlberta, Canada
    1584.4×
  11. 11La UniónLos Ríos Region, Chile
    1584.4×
  12. 12AshlandOregon, United States
    1574.3×
  13. 13MedfordOregon, United States
    1564.2×
  14. 14AltamontOregon, United States
    1554.1×
  15. 15RedmondOregon, United States
    1533.9×
  16. 16BendOregon, United States
    1533.9×
  17. 17CuranilahueBiobio, Chile
    1533.8×
  18. 18Puerto MonttLos Lagos Region, Chile
    1453.6×
  19. 19ReddingCalifornia, United States
    1433.5×
  20. 20CuricóMaule Region, Chile
    1423.5×
  21. 21Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1373.3×
  22. 22ChillánÑuble, Chile
    1353.3×
  23. 23Swift CurrentSaskatchewan, Canada
    1353.3×
  24. 24SaskatoonSaskatchewan, Canada
    1343.3×
  25. 25NacimientoBiobio, Chile
    1333.2×
  26. 26TalcaMaule Region, Chile
    1323.2×
  27. 27San CarlosÑuble, Chile
    1293.1×
  28. 28EdmontonAlberta, Canada
    1283.1×
  29. 29CauquenesMaule Region, Chile
    1253.0×
  30. 30ChiguayanteBiobio, Chile
    1212.9×
  31. 31ValdiviaLos Ríos Region, Chile
    1202.9×
  32. 31RoseburgOregon, United States
    1202.9×
  33. 33Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1182.8×
  34. 34West FargoNorth Dakota, United States
    1162.8×
  35. 35AlexandriaAlexandria, Egypt
    1152.8×
  36. 36ToméBiobio, Chile
    1142.7×
  37. 37Lahorelow-cost sensorsPunjab, Pakistan
    1132.7×
  38. 38LimaLima Province, Peru
    1132.7×
  39. 38Santa Anita - Los FicusLima region, Peru
    1132.7×
  40. 40KigaliKigali, Rwanda
    1112.6×
  41. 41Addis AbabaAddis Ababa, Ethiopia
    1112.6×
  42. 42Grants PassOregon, United States
    1102.6×
  43. 43AberdeenSouth Dakota, United States
    1072.5×
  44. 44DelhiDelhi, India
    1072.5×
  45. 44RancaguaO'Higgins Region, Chile
    1072.5×
  46. 46RengoO'Higgins Region, Chile
    1052.5×
  47. 47TemucoAraucania, Chile
    1052.5×
  48. 48CoronelBiobio, Chile
    1052.5×
  49. 49TalaganteSantiago Metropolitan, Chile
    1042.5×
  50. 50Victoria de DurangoDurango, Mexico
    1022.4×
  51. 51MexicaliBaja California, Mexico
    1022.4×
  52. 52Saint CloudMinnesota, United States
    992.3×
  53. 53Kampalalow-cost sensorsCentral Region, Uganda
    992.3×
  54. 54PristinaPristina, Kosovo
    972.2×
  55. 55HualquiBiobio, Chile
    962.2×
  56. 56PentictonBritish Columbia, Canada
    952.2×
  57. 57WatertownSouth Dakota, United States
    952.2×
  58. 58TalcahuanoBiobio, Chile
    952.2×
  59. 59SantiagoSantiago Metropolitan, Chile
    942.2×
  60. 59CoyhaiqueAysén, Chile
    942.2×
  61. 61VernonBritish Columbia, Canada
    942.2×
  62. 62ChicoCalifornia, United States
    942.1×
  63. 63San Salvador TizatlalliMéxico, Mexico
    922.1×
  64. 64Islamabadlow-cost sensorsIslamabad, Pakistan
    922.1×
  65. 64Saint MichaelMinnesota, United States
    922.1×
  66. 66BurnsvilleMinnesota, United States
    912.1×
  67. 67ShakopeeMinnesota, United States
    912.0×
  68. 68KelownaBritish Columbia, Canada
    902.0×
  69. 69TarnówLesser Poland, Poland
    881.9×
  70. 70Puerto AysénAysén, Chile
    881.9×
  71. 71Apple ValleyMinnesota, United States
    881.9×
  72. 71MinneapolisMinnesota, United States
    881.9×
  73. 73Red DeerAlberta, Canada
    871.9×
  74. 74LibertyMissouri, United States
    871.9×
  75. 74NipomoCalifornia, United States
    871.9×
  76. 76XonacatlánMéxico, Mexico
    861.9×
  77. 77TijuanaBaja California, Mexico
    851.8×
  78. 78AntofagastaAntofagasta, Chile
    851.8×
  79. 79TolucaMéxico, Mexico
    851.8×
  80. 79Arroyo GrandeCalifornia, United States
    851.8×
  81. 81HanoiHanoi, Vietnam
    851.8×
  82. 81San Francisco TlalcilalcalpanMéxico, Mexico
    851.8×
  83. 83BrookingsSouth Dakota, United States
    841.8×
  84. 84DushanbeDushanbe, Tajikistan
    841.8×
  85. 85ConcepciónBiobio, Chile
    831.7×
  86. 86TlaquepaqueJalisco, Mexico
    821.7×
  87. 87BlaineMinnesota, United States
    821.7×
  88. 88N'DjamenaN’Djaména, Chad
    821.7×
  89. 89ChennaiTamil Nadu, India
    821.7×
  90. 89Puente AltoSantiago Metropolitan, Chile
    821.7×
  91. 91Villa Poeta José Gálvez BarrenecheaLima region, Peru
    811.7×
  92. 92CoquimboCoquimbo Region, Chile
    811.7×
  93. 93CuernavacaMorelos, Mexico
    801.7×
  94. 94Los ÁngelesBiobio, Chile
    801.6×
  95. 95HyderabadTelangana, India
    801.6×
  96. 95BamakoBamako, Mali
    801.6×
  97. 97Saint PaulMinnesota, United States
    791.6×
  98. 98San Pedro de la PazBiobio, Chile
    791.6×
  99. 99Yuba CityCalifornia, United States
    791.6×
  100. 100QuillotaValparaiso, Chile
    781.6×
  101. 101QuinteroValparaiso, Chile
    781.6×
  102. 102AsprópyrgosAttica, Greece
    771.5×
  103. 102Karachilow-cost sensorsSindh, Pakistan
    771.5×
  104. 102Si Maha PhotPrachin Buri, Thailand
    771.5×
  105. 105St. AlbertAlberta, Canada
    771.5×
  106. 106CopiapóAtacama, Chile
    771.5×
  107. 107San Francisco De BorjaLima region, Peru
    771.5×
  108. 108Wan ChaiWan Chai, Hong Kong
    771.5×
  109. 109PrešovPrešov Region, Slovakia
    761.5×
  110. 109Tha BoNong Khai, Thailand
    761.5×
  111. 111CalgaryAlberta, Canada
    751.5×
  112. 112Kathmandulow-cost sensorsBagmati Province, Nepal
    751.5×
  113. 113Sioux FallsSouth Dakota, United States
    751.5×
  114. 114LompocCalifornia, United States
    741.4×
  115. 115La SerenaCoquimbo Region, Chile
    741.4×
  116. 115ConcónValparaiso, Chile
    741.4×
  117. 117Ban Samae DamBangkok, Thailand
    741.4×
  118. 118NairobiNairobi County, Kenya
    731.4×
  119. 118LotaBiobio, Chile
    731.4×
  120. 118AnaheimCalifornia, United States
    731.4×
  121. 118Medicine HatAlberta, Canada
    731.4×
  122. 118Sherwood ParkAlberta, Canada
    731.4×
  123. 123WenatcheeWashington, United States
    731.4×
  124. 124DębicaSubcarpathia, Poland
    731.4×
  125. 124ParadiseCalifornia, United States
    731.4×
  126. 126ZapopanJalisco, Mexico
    731.4×
  127. 127Ulu BedokSingapore
    721.4×
  128. 128AcharnésAttica, Greece
    721.4×
  129. 129Viña del MarValparaiso, Chile
    721.4×
  130. 130Tepeji del Río de OcampoHidalgo, Mexico
    721.3×
  131. 131SaraburiSaraburi, Thailand
    711.3×
  132. 132CholulaPuebla, Mexico
    711.3×
  133. 132ComptonCalifornia, United States
    711.3×
  134. 134GuangzhouGuangdong, China
    711.3×
  135. 135AthensAttica, Greece
    711.3×
  136. 136TakasakiGunma, Japan
    701.3×
  137. 137MukdahanMukdahan, Thailand
    701.3×
  138. 138HumennéPrešov Region, Slovakia
    701.3×
  139. 138PhichitPhichit, Thailand
    701.3×
  140. 138Ciudad ApodacaNuevo León, Mexico
    701.3×
  141. 141TocopillaAntofagasta, Chile
    691.3×
  142. 141RochesterMinnesota, United States
    691.3×
  143. 143SarajevoFederation of B&H, Bosnia and Herzegovina
    691.3×
  144. 144Ciudad Benito JuárezNuevo León, Mexico
    691.2×
  145. 145RzeszówSubcarpathia, Poland
    681.2×
  146. 145Ang Mo Kio New TownSingapore
    681.2×
  147. 145Long BeachCalifornia, United States
    681.2×
  148. 148Nong KhaemBangkok, Thailand
    681.2×
  149. 149WoodlandCalifornia, United States
    681.2×
  150. 150Moses LakeWashington, United States
    681.2×
  151. 151LoeiLoei, Thailand
    671.2×
  152. 152Bang NaBangkok, Thailand
    671.2×
  153. 153KošiceKošice Region, Slovakia
    671.2×
  154. 153Santa BarbaraCalifornia, United States
    671.2×
  155. 155KhalándrionAttica, Greece
    671.2×
  156. 155Chula VistaCalifornia, United States
    671.2×
  157. 155PendletonOregon, United States
    671.2×
  158. 158NagaiYamagata, Japan
    671.2×
  159. 158Kansas CityKansas, United States
    671.2×
  160. 158Saphan SungBangkok, Thailand
    671.2×
  161. 161LincolnNebraska, United States
    661.2×
  162. 161AirdrieAlberta, Canada
    661.2×
  163. 163BakuBaki, Azerbaijan
    661.2×
  164. 163KanchanaburiKanchanaburi, Thailand
    661.2×
  165. 163Frýdek-MístekMoravian-Silesian Region, Czechia
    661.2×
  166. 163AnkenyIowa, United States
    661.2×
  167. 163Los AngelesCalifornia, United States
    661.2×
  168. 168Santa CatarinaNuevo León, Mexico
    661.1×
  169. 168WichitaKansas, United States
    661.1×
  170. 170DecaturIllinois, United States
    661.1×
  171. 170OmahaNebraska, United States
    661.1×
  172. 170Khan Na YaoBangkok, Thailand
    661.1×
  173. 173Sai MaiBangkok, Thailand
    661.1×
  174. 174Spišská Nová VesKošice Region, Slovakia
    651.1×
  175. 174TopekaKansas, United States
    651.1×
  176. 176FontanaCalifornia, United States
    651.1×
  177. 176San DiegoCalifornia, United States
    651.1×
  178. 178Ubon RatchathaniUbon Ratchathani, Thailand
    651.1×
  179. 179TetovoTetovo, North Macedonia
    651.1×
  180. 179UttaraditUttaradit, Thailand
    651.1×
  181. 179DerbyKansas, United States
    651.1×
  182. 179RiversideCalifornia, United States
    651.1×
  183. 183Mae SaiChiang Rai, Thailand
    641.1×
  184. 183VeszprémVeszprém, Hungary
    641.1×
  185. 183BloomingtonIllinois, United States
    641.1×
  186. 186PrzemyślSubcarpathia, Poland
    641.1×
  187. 186BitolaBitola, North Macedonia
    641.1×
  188. 186RadomskoŁódź Voivodeship, Poland
    641.1×
  189. 186ŁódźŁódź Voivodeship, Poland
    641.1×
  190. 186OlatheKansas, United States
    641.1×
  191. 186JolietIllinois, United States
    641.1×
  192. 186BurbankCalifornia, United States
    641.1×
  193. 193Udon ThaniUdon Thani, Thailand
    641.1×
  194. 193Iowa CityIowa, United States
    641.1×
  195. 193East ChicagoIndiana, United States
    641.1×
  196. 196NiskoSubcarpathia, Poland
    641.1×
  197. 196LampangLampang, Thailand
    641.1×
  198. 196Bang Bo DistrictSamut Prakan, Thailand
    641.1×
  199. 196ŌtsukiYamanashi, Japan
    641.1×
  200. 196Alto HospicioTarapacá, Chile
    641.1×

Top 200 of 1,895 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, August 29, 2023, smogrank.com/history/2023-08-29 (accessed 2 Oct 2026).

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