SmogRank / History / August 24, 2023

Most polluted cities on August 24, 2023

1,752 cities ranked by their average PM2.5 over the day; the worst was Puerto Varas, Chile, at 137.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 24, 2023. All episodes.

← Puerto Varas 137.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 24, 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
    2129.1×
  2. 2IlindenIlinden, North Macedonia
    1917.5×
  3. 3OsornoLos Lagos Region, Chile
    1877.1×
  4. 4Puerto MonttLos Lagos Region, Chile
    1846.9×
  5. 5Fort St. JohnBritish Columbia, Canada
    1695.4×
  6. 6Grants PassOregon, United States
    1675.2×
  7. 7Fort McMurrayAlberta, Canada
    1665.1×
  8. 8La UniónLos Ríos Region, Chile
    1655.0×
  9. 9AshlandOregon, United States
    1634.8×
  10. 10ManamaManama, Bahrain
    1634.8×
  11. 11MedfordOregon, United States
    1634.8×
  12. 12Grande PrairieAlberta, Canada
    1554.1×
  13. 13NacimientoBiobio, Chile
    1554.1×
  14. 14JakartaJakarta, Indonesia
    1473.6×
  15. 15TalcahuanoBiobio, Chile
    1453.6×
  16. 16ValdiviaLos Ríos Region, Chile
    1303.2×
  17. 17AlexandriaAlexandria, Egypt
    1293.1×
  18. 18EdmontonAlberta, Canada
    1283.1×
  19. 19Kampalalow-cost sensorsCentral Region, Uganda
    1283.1×
  20. 20CoronelBiobio, Chile
    1202.9×
  21. 21Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1182.8×
  22. 22DushanbeDushanbe, Tajikistan
    1182.8×
  23. 23Rapid CitySouth Dakota, United States
    1112.6×
  24. 24St. AlbertAlberta, Canada
    1112.6×
  25. 25Dhakalow-cost sensorsDhaka Division, Bangladesh
    1102.6×
  26. 26KigaliKigali, Rwanda
    1052.5×
  27. 26Puerto AysénAysén, Chile
    1052.5×
  28. 28AthensAttica, Greece
    1042.4×
  29. 28PristinaPristina, Kosovo
    1042.4×
  30. 30Lahorelow-cost sensorsPunjab, Pakistan
    1022.4×
  31. 30MexicaliBaja California, Mexico
    1022.4×
  32. 32SarajevoFederation of B&H, Bosnia and Herzegovina
    962.2×
  33. 33KamloopsBritish Columbia, Canada
    952.2×
  34. 34BirminghamAlabama, United States
    942.2×
  35. 35TalcaMaule Region, Chile
    942.1×
  36. 36São PauloSão Paulo, Brazil
    932.1×
  37. 37NaplesCampania, Italy
    932.1×
  38. 38HanoiHanoi, Vietnam
    922.1×
  39. 38LinaresMaule Region, Chile
    922.1×
  40. 40Los ÁngelesBiobio, Chile
    922.1×
  41. 41CoyhaiqueAysén, Chile
    912.1×
  42. 42ChillánÑuble, Chile
    912.0×
  43. 43AltamontOregon, United States
    902.0×
  44. 44CauquenesMaule Region, Chile
    902.0×
  45. 45San CarlosÑuble, Chile
    892.0×
  46. 46HualquiBiobio, Chile
    892.0×
  47. 47MasonOhio, United States
    881.9×
  48. 48Addis AbabaAddis Ababa, Ethiopia
    881.9×
  49. 49TalaganteSantiago Metropolitan, Chile
    881.9×
  50. 50SliemaTas-Sliema, Malta
    871.9×
  51. 50CuranilahueBiobio, Chile
    871.9×
  52. 52LibertyMissouri, United States
    861.9×
  53. 52Candler-McAfeeGeorgia, United States
    861.9×
  54. 54TemucoAraucania, Chile
    861.9×
  55. 55JasperIndiana, United States
    861.8×
  56. 56JeddahMecca Region, Saudi Arabia
    851.8×
  57. 57MostaIl-Mosta, Malta
    841.8×
  58. 58ŻabbarĦaż-Żabbar, Malta
    831.8×
  59. 59ThessaloníkiCentral Macedonia, Greece
    821.7×
  60. 60BamakoBamako, Mali
    811.7×
  61. 60JeffersontownKentucky, United States
    811.7×
  62. 62JeffersonvilleIndiana, United States
    811.7×
  63. 62Great FallsMontana, United States
    811.7×
  64. 64ToméBiobio, Chile
    811.7×
  65. 64SantiagoSantiago Metropolitan, Chile
    811.7×
  66. 66IndianapolisIndiana, United States
    801.7×
  67. 66LouisvilleKentucky, United States
    801.7×
  68. 68PrešovPrešov Region, Slovakia
    801.6×
  69. 69ConcepciónBiobio, Chile
    801.6×
  70. 70NairobiNairobi County, Kenya
    791.6×
  71. 70San Pedro de la PazBiobio, Chile
    791.6×
  72. 72Islamabadlow-cost sensorsIslamabad, Pakistan
    791.6×
  73. 72ChennaiTamil Nadu, India
    791.6×
  74. 74CuernavacaMorelos, Mexico
    791.6×
  75. 74EvansvilleIndiana, United States
    791.6×
  76. 76TetovoTetovo, North Macedonia
    781.6×
  77. 76Little RockArkansas, United States
    781.6×
  78. 78East Saint LouisIllinois, United States
    781.6×
  79. 79Valley StationKentucky, United States
    771.5×
  80. 80TrnavaTrnava Region, Slovakia
    771.5×
  81. 80AlessandriaPiedmont, Italy
    771.5×
  82. 82HattiesburgMississippi, United States
    771.5×
  83. 83Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    761.5×
  84. 83HyderabadTelangana, India
    761.5×
  85. 83RancaguaO'Higgins Region, Chile
    761.5×
  86. 83FishersIndiana, United States
    761.5×
  87. 83ShreveportLouisiana, United States
    761.5×
  88. 83SulphurLouisiana, United States
    761.5×
  89. 89KolkataWest Bengal, India
    761.5×
  90. 90New OrleansLouisiana, United States
    761.5×
  91. 90Sherwood ParkAlberta, Canada
    761.5×
  92. 92Saint MatthewsKentucky, United States
    761.5×
  93. 93DecaturIllinois, United States
    761.5×
  94. 94McDonoughGeorgia, United States
    751.5×
  95. 95Samut SakhonSamut Sakhon, Thailand
    751.5×
  96. 95Nong KhaemBangkok, Thailand
    751.5×
  97. 95ColumbusIndiana, United States
    751.5×
  98. 98Terre HauteIndiana, United States
    741.4×
  99. 98HernandoMississippi, United States
    741.4×
  100. 100RengoO'Higgins Region, Chile
    741.4×
  101. 100ColumbusGeorgia, United States
    741.4×
  102. 100EugeneOregon, United States
    741.4×
  103. 103BolzanoTrentino-Alto Adige, Italy
    741.4×
  104. 103Ciudad ApodacaNuevo León, Mexico
    741.4×
  105. 105GadsdenAlabama, United States
    741.4×
  106. 105PentictonBritish Columbia, Canada
    741.4×
  107. 107ModugnoApulia, Italy
    741.4×
  108. 107Franklin ParkIllinois, United States
    741.4×
  109. 107East ChicagoIndiana, United States
    741.4×
  110. 110SpringdaleArkansas, United States
    741.4×
  111. 110SpringfieldIllinois, United States
    741.4×
  112. 112RoveretoTrentino-Alto Adige, Italy
    731.4×
  113. 112CalgaryAlberta, Canada
    731.4×
  114. 112ChilliwackBritish Columbia, Canada
    731.4×
  115. 115BratislavaBratislava Region, Slovakia
    731.4×
  116. 115ElizabethtownKentucky, United States
    731.4×
  117. 117QuillotaValparaiso, Chile
    731.4×
  118. 117New AlbanyIndiana, United States
    731.4×
  119. 119HumennéPrešov Region, Slovakia
    731.4×
  120. 119BelgradeCentral Serbia, Serbia
    731.4×
  121. 119SalorTashkent Region, Uzbekistan
    731.4×
  122. 119BellinzonaTicino, Switzerland
    731.4×
  123. 119AntofagastaAntofagasta, Chile
    731.4×
  124. 124DallasTexas, United States
    731.4×
  125. 125AsprópyrgosAttica, Greece
    721.4×
  126. 125GuangzhouGuangdong, China
    721.4×
  127. 125ValdemoroMadrid, Spain
    721.4×
  128. 125ChiguayanteBiobio, Chile
    721.4×
  129. 125MaconGeorgia, United States
    721.4×
  130. 125JolietIllinois, United States
    721.4×
  131. 131BakuBaki, Azerbaijan
    721.4×
  132. 131LewistonIdaho, United States
    721.4×
  133. 133HuelvaAndalusia, Spain
    721.4×
  134. 134La Línea de la ConcepciónAndalusia, Spain
    721.4×
  135. 134Phenix CityAlabama, United States
    721.4×
  136. 134JenksOklahoma, United States
    721.4×
  137. 134Port ArthurTexas, United States
    721.4×
  138. 138MontgomeryAlabama, United States
    721.3×
  139. 139NišCentral Serbia, Serbia
    711.3×
  140. 139DelhiDelhi, India
    711.3×
  141. 139JesiThe Marches, Italy
    711.3×
  142. 139Ferry PassFlorida, United States
    711.3×
  143. 139HelenaMontana, United States
    711.3×
  144. 139PullmanWashington, United States
    711.3×
  145. 145HavířovMoravian-Silesian Region, Czechia
    711.3×
  146. 146PylaíaCentral Macedonia, Greece
    711.3×
  147. 146AtlantaGeorgia, United States
    711.3×
  148. 148AricaArica y Parinacota Region, Chile
    711.3×
  149. 148NorthbrookIllinois, United States
    711.3×
  150. 148PortageIndiana, United States
    711.3×
  151. 151BitolaBitola, North Macedonia
    711.3×
  152. 151AlgecirasAndalusia, Spain
    711.3×
  153. 151TrentoTrentino-Alto Adige, Italy
    711.3×
  154. 151CasertaCampania, Italy
    711.3×
  155. 151MissoulaMontana, United States
    711.3×
  156. 156RichmondCalifornia, United States
    711.3×
  157. 157San RoqueAndalusia, Spain
    701.3×
  158. 157PaducahKentucky, United States
    701.3×
  159. 159Victoria de DurangoDurango, Mexico
    701.3×
  160. 159TrussvilleAlabama, United States
    701.3×
  161. 159NapervilleIllinois, United States
    701.3×
  162. 159RedmondOregon, United States
    701.3×
  163. 159ReginaSaskatchewan, Canada
    701.3×
  164. 164N'DjamenaN’Djaména, Chad
    701.3×
  165. 164DerbyKansas, United States
    701.3×
  166. 164University CityMissouri, United States
    701.3×
  167. 164KokomoIndiana, United States
    701.3×
  168. 164JenisonMichigan, United States
    701.3×
  169. 169QuinteroValparaiso, Chile
    701.3×
  170. 169TulsaOklahoma, United States
    701.3×
  171. 171SkopjeGrad Skopje, North Macedonia
    691.3×
  172. 171AntananarivoAnalamanga, Madagascar
    691.3×
  173. 171Karachilow-cost sensorsSindh, Pakistan
    691.3×
  174. 171Falconara MarittimaThe Marches, Italy
    691.3×
  175. 171Grand RapidsMichigan, United States
    691.3×
  176. 176WeidenBavaria, Germany
    691.3×
  177. 176SalernoCampania, Italy
    691.3×
  178. 176OlatheKansas, United States
    691.3×
  179. 176Fort WorthTexas, United States
    691.3×
  180. 176TexarkanaTexas, United States
    691.3×
  181. 181Kuala LumpurKuala Lumpur, Malaysia
    691.3×
  182. 181BurghausenBavaria, Germany
    691.3×
  183. 181LitvínovÚstí nad Labem Region, Czechia
    691.3×
  184. 181BohumínMoravian-Silesian Region, Czechia
    691.3×
  185. 181MóstolesMadrid, Spain
    691.3×
  186. 181SaginawTexas, United States
    691.3×
  187. 181RockfordIllinois, United States
    691.3×
  188. 188SevillaAndalusia, Spain
    691.2×
  189. 188SallanchesAuvergne-Rhône-Alpes, France
    691.2×
  190. 188PalenciaCastille and León, Spain
    691.2×
  191. 191Banja LukaSrpska, Bosnia and Herzegovina
    691.2×
  192. 191LawrencevilleGeorgia, United States
    691.2×
  193. 191RoseburgOregon, United States
    691.2×
  194. 194NitraNitra Region, Slovakia
    691.2×
  195. 194MostÚstí nad Labem Region, Czechia
    691.2×
  196. 194Laudio / LlodioBasque Country, Spain
    691.2×
  197. 194PascagoulaMississippi, United States
    691.2×
  198. 194NorwoodOhio, United States
    691.2×
  199. 194MuscatineIowa, United States
    691.2×
  200. 194BakersfieldCalifornia, United States
    691.2×

Top 200 of 1,752 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 24, 2023, smogrank.com/history/2023-08-24 (accessed 2 Oct 2026).

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