SmogRank / History / September 20, 2024

Most polluted cities on September 20, 2024

1,731 cities ranked by their average PM2.5 over the day; the worst was Peshawar, Pakistan, at 77.7 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 20, 2024. All episodes.

← Peshawar 77.7 µg/m³ 70 µg/m³15 WHO 24-hour guideline
Every city ranked for September 20, 2024, 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. 1Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1675.2×
  2. 2AshgabatAshgabat, Turkmenistan
    1624.7×
  3. 3Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1604.6×
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    1594.5×
  5. 5KolkataWest Bengal, India
    1594.5×
  6. 6DushanbeDushanbe, Tajikistan
    1574.3×
  7. 7CairoCairo, Egypt
    1564.2×
  8. 8Kampalalow-cost sensorsCentral Region, Uganda
    1564.1×
  9. 9Lahorelow-cost sensorsPunjab, Pakistan
    1443.5×
  10. 10Santa Anita - Los FicusLima region, Peru
    1413.5×
  11. 11BaghdadBaghdad, Iraq
    1383.4×
  12. 12ChennaiTamil Nadu, India
    1182.8×
  13. 13AntananarivoAnalamanga, Madagascar
    1172.8×
  14. 13LimaLima Province, Peru
    1172.8×
  15. 15JakartaJakarta, Indonesia
    1162.8×
  16. 16HanoiHanoi, Vietnam
    1082.6×
  17. 17ŁukówLublin, Poland
    1072.5×
  18. 18RengoO'Higgins Region, Chile
    1042.5×
  19. 19HyderabadTelangana, India
    982.3×
  20. 20CuranilahueBiobio, Chile
    962.2×
  21. 21CanterburyEngland, United Kingdom
    962.2×
  22. 22HualpénBiobio, Chile
    962.2×
  23. 23KigaliKigali, Rwanda
    932.1×
  24. 24Iloilolow-cost sensorsWestern Visayas, Philippines
    922.1×
  25. 25Ulu BedokSingapore
    922.1×
  26. 26ZamośćLublin, Poland
    922.1×
  27. 26Asunciónlow-cost sensorsAsuncion, Paraguay
    922.1×
  28. 28Islamabadlow-cost sensorsIslamabad, Pakistan
    912.1×
  29. 29CuricóMaule Region, Chile
    912.0×
  30. 29CoyhaiqueAysén, Chile
    912.0×
  31. 31SzczecinWest Pomerania, Poland
    902.0×
  32. 32StarachowiceŚwiętokrzyskie, Poland
    902.0×
  33. 32RancaguaO'Higgins Region, Chile
    902.0×
  34. 34Puerto VarasLos Lagos Region, Chile
    902.0×
  35. 35LublinLublin, Poland
    892.0×
  36. 35San Francisco De BorjaLima region, Peru
    892.0×
  37. 37Canvey IslandEngland, United Kingdom
    861.9×
  38. 38KłodzkoLower Silesia, Poland
    851.8×
  39. 39Bang NaBangkok, Thailand
    851.8×
  40. 39Gorzów WielkopolskiLubusz, Poland
    851.8×
  41. 39Jacobo HunterArequipa, Peru
    851.8×
  42. 42Clacton-on-SeaEngland, United Kingdom
    841.8×
  43. 43Puerto MonttLos Lagos Region, Chile
    841.8×
  44. 44DelhiDelhi, India
    841.8×
  45. 44QuinteroValparaiso, Chile
    841.8×
  46. 46Banja LukaSrpska, Bosnia and Herzegovina
    831.8×
  47. 47PoznańGreater Poland, Poland
    831.8×
  48. 48PortsmouthEngland, United Kingdom
    831.7×
  49. 49SeafordEngland, United Kingdom
    821.7×
  50. 49BexleyEngland, United Kingdom
    821.7×
  51. 51São PauloSão Paulo, Brazil
    821.7×
  52. 52BrightonEngland, United Kingdom
    821.7×
  53. 53WłocławekKujawsko-Pomorskie, Poland
    821.7×
  54. 53La UniónLos Ríos Region, Chile
    821.7×
  55. 55KaliszGreater Poland, Poland
    821.7×
  56. 56Skarżysko-KamiennaŚwiętokrzyskie, Poland
    811.7×
  57. 57BeijingBeijing, China
    811.7×
  58. 57AndoverEngland, United Kingdom
    811.7×
  59. 59NewmarketEngland, United Kingdom
    801.6×
  60. 60RadomMazovia, Poland
    801.6×
  61. 60CoronelBiobio, Chile
    801.6×
  62. 62Şabāḩ as SālimMubārak al Kabīr, Kuwait
    801.6×
  63. 62AlgiersAlgiers, Algeria
    801.6×
  64. 62KutnoŁódź Voivodeship, Poland
    801.6×
  65. 62SantiagoSantiago Metropolitan, Chile
    801.6×
  66. 66HayesEngland, United Kingdom
    791.6×
  67. 66HualquiBiobio, Chile
    791.6×
  68. 68MumbaiMaharashtra, India
    791.6×
  69. 68ŁaskŁódź Voivodeship, Poland
    791.6×
  70. 68AntofagastaAntofagasta, Chile
    791.6×
  71. 71PlymouthEngland, United Kingdom
    791.6×
  72. 71Zielona GóraLubusz, Poland
    791.6×
  73. 73Villa Poeta José Gálvez BarrenecheaLima region, Peru
    791.6×
  74. 74San ClementeIca, Peru
    781.6×
  75. 75ŻyrardówMazovia, Poland
    781.6×
  76. 75ReadingEngland, United Kingdom
    781.6×
  77. 75DartfordEngland, United Kingdom
    781.6×
  78. 75ŁódźŁódź Voivodeship, Poland
    781.6×
  79. 79Kathmandulow-cost sensorsBagmati Province, Nepal
    781.6×
  80. 79Jurong WestSingapore
    781.6×
  81. 79Birminghamlow-cost sensorsEngland, United Kingdom
    781.6×
  82. 82LondonEngland, United Kingdom
    781.6×
  83. 82Puente AltoSantiago Metropolitan, Chile
    781.6×
  84. 84GdyniaPomerania, Poland
    771.5×
  85. 85SouthamptonEngland, United Kingdom
    771.5×
  86. 85QuilpuéValparaiso, Chile
    771.5×
  87. 87NorwichEngland, United Kingdom
    771.5×
  88. 88KościanGreater Poland, Poland
    771.5×
  89. 88TalaganteSantiago Metropolitan, Chile
    771.5×
  90. 90PruszkówMazovia, Poland
    761.5×
  91. 90NewportWales, United Kingdom
    761.5×
  92. 90ZgierzŁódź Voivodeship, Poland
    761.5×
  93. 90Puerto AysénAysén, Chile
    761.5×
  94. 90TsuchiuraIbaraki, Japan
    761.5×
  95. 95TocopillaAntofagasta, Chile
    761.5×
  96. 96BarnstapleEngland, United Kingdom
    761.5×
  97. 96MaarssenUtrecht, The Netherlands
    761.5×
  98. 98Ang Mo Kio New TownSingapore
    761.5×
  99. 99Wan ChaiWan Chai, Hong Kong
    751.5×
  100. 99CoquimboCoquimbo Region, Chile
    751.5×
  101. 99CopiapóAtacama, Chile
    751.5×
  102. 102NacimientoBiobio, Chile
    751.5×
  103. 103WarsawMazovia, Poland
    751.5×
  104. 104The HagueSouth Holland, The Netherlands
    751.5×
  105. 105OsornoLos Lagos Region, Chile
    751.5×
  106. 106GillinghamEngland, United Kingdom
    741.4×
  107. 107N'DjamenaN’Djaména, Chad
    741.4×
  108. 107RacibórzSilesia, Poland
    741.4×
  109. 109Royal Leamington SpaEngland, United Kingdom
    741.4×
  110. 109RadomskoŁódź Voivodeship, Poland
    741.4×
  111. 109QuillotaValparaiso, Chile
    741.4×
  112. 109YauriCuzco Department, Peru
    741.4×
  113. 113CallaoCallao, Peru
    741.4×
  114. 114GrajewoPodlasie, Poland
    741.4×
  115. 115Konstancin-JeziornaMazovia, Poland
    731.4×
  116. 115Nepeanlow-cost sensorsOntario, Canada
    731.4×
  117. 117GraysEngland, United Kingdom
    731.4×
  118. 117La SerenaCoquimbo Region, Chile
    731.4×
  119. 119Jastrzębie ZdrójSilesia, Poland
    731.4×
  120. 120OtwockMazovia, Poland
    731.4×
  121. 120BydgoszczKujawsko-Pomorskie, Poland
    731.4×
  122. 122OxfordEngland, United Kingdom
    731.4×
  123. 123Queenstown Estatelow-cost sensorsSingapore
    721.4×
  124. 124Winterthurlow-cost sensorsZurich, Switzerland
    721.4×
  125. 124GdańskPomerania, Poland
    721.4×
  126. 126OlsztynWarmia-Masuria, Poland
    721.4×
  127. 126ToruńKujawsko-Pomorskie, Poland
    721.4×
  128. 126ChikuseiIbaraki, Japan
    721.4×
  129. 126Khlong Sam WaBangkok, Thailand
    721.4×
  130. 130UžiceCentral Serbia, Serbia
    721.4×
  131. 131CardiffWales, United Kingdom
    711.3×
  132. 131ConcónValparaiso, Chile
    711.3×
  133. 133MitoIbaraki, Japan
    711.3×
  134. 134Ban Samae DamBangkok, Thailand
    711.3×
  135. 134PłockMazovia, Poland
    711.3×
  136. 134KołobrzegWest Pomerania, Poland
    711.3×
  137. 134AricaArica y Parinacota Region, Chile
    711.3×
  138. 138KielceŚwiętokrzyskie, Poland
    711.3×
  139. 139ĆuprijaCentral Serbia, Serbia
    711.3×
  140. 139BristolEngland, United Kingdom
    711.3×
  141. 139Viña del MarValparaiso, Chile
    711.3×
  142. 142VillarricaAraucania, Chile
    701.3×
  143. 143BiałystokPodlasie, Poland
    701.3×
  144. 143Khan Na YaoBangkok, Thailand
    701.3×
  145. 145CauquenesMaule Region, Chile
    701.3×
  146. 146LegionowoMazovia, Poland
    691.3×
  147. 146Kingston upon HullEngland, United Kingdom
    691.3×
  148. 146WrocławLower Silesia, Poland
    691.3×
  149. 149Novi PazarCentral Serbia, Serbia
    691.2×
  150. 150Briton FerryWales, United Kingdom
    691.2×
  151. 151Nong ChokBangkok, Thailand
    691.2×
  152. 151Bielsko-BialaSilesia, Poland
    691.2×
  153. 153GuangzhouGuangdong, China
    681.2×
  154. 153Stoke-on-TrentEngland, United Kingdom
    681.2×
  155. 153KatowiceSilesia, Poland
    681.2×
  156. 156NakaIbaraki, Japan
    681.2×
  157. 156ElblągWarmia-Masuria, Poland
    681.2×
  158. 158BiggleswadeEngland, United Kingdom
    681.2×
  159. 158Jelenia GóraLower Silesia, Poland
    681.2×
  160. 160BredaNorth Brabant, The Netherlands
    681.2×
  161. 161DziałdowoWarmia-Masuria, Poland
    671.2×
  162. 161IshiokaIbaraki, Japan
    671.2×
  163. 161Columbialow-cost sensorsMissouri, United States
    671.2×
  164. 164Samut SakhonSamut Sakhon, Thailand
    671.2×
  165. 164SheffieldEngland, United Kingdom
    671.2×
  166. 166NiskoSubcarpathia, Poland
    671.2×
  167. 166Little RockArkansas, United States
    671.2×
  168. 168Kędzierzyn-KoźleOpole Voivodeship, Poland
    671.2×
  169. 168ValdiviaLos Ríos Region, Chile
    671.2×
  170. 170SaltashEngland, United Kingdom
    661.1×
  171. 171WawerMazovia, Poland
    661.1×
  172. 171PrzemyślSubcarpathia, Poland
    661.1×
  173. 171AugustówPodlasie, Poland
    661.1×
  174. 171HokotaIbaraki, Japan
    661.1×
  175. 171ChesterfieldEngland, United Kingdom
    661.1×
  176. 171BytówPomerania, Poland
    661.1×
  177. 171ChocopeLa Libertad, Peru
    661.1×
  178. 178IwakiFukushima, Japan
    661.1×
  179. 178RotterdamSouth Holland, The Netherlands
    661.1×
  180. 178KrakówLesser Poland, Poland
    661.1×
  181. 178Hitachi-NakaIbaraki, Japan
    661.1×
  182. 182KasamaIbaraki, Japan
    661.1×
  183. 182CalamaAntofagasta, Chile
    661.1×
  184. 184HayangGyeongsangbuk-do, South Korea
    651.1×
  185. 184Calumet CityIllinois, United States
    651.1×
  186. 186TalcahuanoBiobio, Chile
    651.1×
  187. 186ChiguayanteBiobio, Chile
    651.1×
  188. 186Alto HospicioTarapacá, Chile
    651.1×
  189. 186BirminghamAlabama, United States
    651.1×
  190. 190KraljevoCentral Serbia, Serbia
    651.1×
  191. 190TilburgNorth Brabant, The Netherlands
    651.1×
  192. 190KościerzynaPomerania, Poland
    651.1×
  193. 190AyaseKanagawa, Japan
    651.1×
  194. 194PułtuskMazovia, Poland
    651.1×
  195. 195JarosławSubcarpathia, Poland
    641.1×
  196. 195HeerlenLimburg, The Netherlands
    641.1×
  197. 195ShreveportLouisiana, United States
    641.1×
  198. 198WoodlandsSingapore
    641.1×
  199. 198HitachiIbaraki, Japan
    641.1×
  200. 198ManchesterEngland, United Kingdom
    641.1×

Top 200 of 1,731 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

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, September 20, 2024, smogrank.com/history/2024-09-20 (accessed 3 Oct 2026).

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