SmogRank / History / September 30, 2024

Most polluted cities on September 30, 2024

1,724 cities ranked by their average PM2.5 over the day; the worst was Salor, Uzbekistan, at 171.0 µg/m³. Each city's own local calendar day.

← Salor 171.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for September 30, 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. 1SalorTashkent Region, Uzbekistan
    24611.4×
  2. 2Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1786.3×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    1685.3×
  4. 4Kampalalow-cost sensorsCentral Region, Uganda
    1665.1×
  5. 5Lahorelow-cost sensorsPunjab, Pakistan
    1614.7×
  6. 6AstanaAstana, Kazakhstan
    1584.4×
  7. 7Puerto AysénAysén, Chile
    1483.6×
  8. 8BaghdadBaghdad, Iraq
    1463.6×
  9. 9DelhiDelhi, India
    1443.5×
  10. 10CoyhaiqueAysén, Chile
    1243.0×
  11. 11Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1212.9×
  12. 12Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1202.9×
  13. 13Asunciónlow-cost sensorsAsuncion, Paraguay
    1192.9×
  14. 14KolkataWest Bengal, India
    1172.8×
  15. 15JakartaJakarta, Indonesia
    1152.8×
  16. 16AntananarivoAnalamanga, Madagascar
    1142.7×
  17. 16Islamabadlow-cost sensorsIslamabad, Pakistan
    1142.7×
  18. 18Wan ChaiWan Chai, Hong Kong
    992.3×
  19. 19HyderabadTelangana, India
    972.3×
  20. 20Puerto VarasLos Lagos Region, Chile
    972.3×
  21. 21HualpénBiobio, Chile
    962.2×
  22. 21Jacobo HunterArequipa, Peru
    962.2×
  23. 23Addis AbabaAddis Ababa, Ethiopia
    932.1×
  24. 24DushanbeDushanbe, Tajikistan
    912.1×
  25. 25BakuBaki, Azerbaijan
    912.0×
  26. 26YuanlinTaiwan, Taiwan
    892.0×
  27. 27Santa Anita - Los FicusLima region, Peru
    881.9×
  28. 28La UniónLos Ríos Region, Chile
    871.9×
  29. 29Puerto MonttLos Lagos Region, Chile
    871.9×
  30. 30AntofagastaAntofagasta, Chile
    831.8×
  31. 31DouliuTaiwan, Taiwan
    821.7×
  32. 31ZhushanTaiwan, Taiwan
    821.7×
  33. 33XinyingTaiwan, Taiwan
    821.7×
  34. 34ErlunTaiwan, Taiwan
    811.7×
  35. 35NantouTaiwan, Taiwan
    811.7×
  36. 36RiversideCalifornia, United States
    801.6×
  37. 37AshgabatAshgabat, Turkmenistan
    801.6×
  38. 38Mong KokYau Tsim Mong District, Hong Kong
    791.6×
  39. 39BogotáBogota D.C., Colombia
    791.6×
  40. 40OsornoLos Lagos Region, Chile
    791.6×
  41. 41KaohsiungTakao, Taiwan
    781.6×
  42. 41FanlingNorth District, Hong Kong
    781.6×
  43. 41Jurupa ValleyCalifornia, United States
    781.6×
  44. 44BanningCalifornia, United States
    781.6×
  45. 45HanoiHanoi, Vietnam
    781.6×
  46. 46GuangzhouGuangdong, China
    771.6×
  47. 47São PauloSão Paulo, Brazil
    771.5×
  48. 48Carsonlow-cost sensorsCalifornia, United States
    771.5×
  49. 49Tin Shui WaiYuen Long, Hong Kong
    771.5×
  50. 50TainanTaiwan, Taiwan
    761.5×
  51. 50Sau Mau PingKwun Tong District, Hong Kong
    761.5×
  52. 50NacimientoBiobio, Chile
    761.5×
  53. 53BeigangTaiwan, Taiwan
    761.5×
  54. 54Tuen MunTuen Mun, Hong Kong
    751.5×
  55. 55Puente AltoSantiago Metropolitan, Chile
    751.5×
  56. 56VictoriaCentral and Western, Hong Kong
    751.5×
  57. 57YongkangTaiwan, Taiwan
    751.5×
  58. 57CoronelBiobio, Chile
    751.5×
  59. 57FontanaCalifornia, United States
    751.5×
  60. 60Kwai ChungKwai Tsing District, Hong Kong
    741.4×
  61. 60VillarricaAraucania, Chile
    741.4×
  62. 60SantiagoSantiago Metropolitan, Chile
    741.4×
  63. 63San Tung Chung HangIslands, Hong Kong
    741.4×
  64. 63RancaguaO'Higgins Region, Chile
    741.4×
  65. 63CuranilahueBiobio, Chile
    741.4×
  66. 66Sham Shui PoSham Shui Po District, Hong Kong
    731.4×
  67. 67TocopillaAntofagasta, Chile
    721.4×
  68. 68ErlinTaiwan, Taiwan
    721.4×
  69. 68N'DjamenaN’Djaména, Chad
    721.4×
  70. 70Tsuen WanTsuen Wan, Hong Kong
    721.3×
  71. 71TaichungTaiwan, Taiwan
    711.3×
  72. 71Torrancelow-cost sensorsCalifornia, United States
    711.3×
  73. 73Tai PoTai Po, Hong Kong
    711.3×
  74. 73San Francisco De BorjaLima region, Peru
    711.3×
  75. 75TemucoAraucania, Chile
    711.3×
  76. 76ComptonCalifornia, United States
    711.3×
  77. 77HualquiBiobio, Chile
    701.3×
  78. 78TaibaoTaiwan, Taiwan
    701.3×
  79. 79ShanghaiShanghai, China
    701.3×
  80. 79Bielsko-BialaSilesia, Poland
    701.3×
  81. 79QuillotaValparaiso, Chile
    701.3×
  82. 82Chiayi CityTaiwan, Taiwan
    701.3×
  83. 83QuinteroValparaiso, Chile
    691.3×
  84. 83Hawthornelow-cost sensorsCalifornia, United States
    691.3×
  85. 85Los AngelesCalifornia, United States
    691.2×
  86. 86ValdiviaLos Ríos Region, Chile
    691.2×
  87. 86CuricóMaule Region, Chile
    691.2×
  88. 86MissionTexas, United States
    691.2×
  89. 89ChanghuaTaiwan, Taiwan
    681.2×
  90. 90Sha TinSha Tin, Hong Kong
    681.2×
  91. 90RengoO'Higgins Region, Chile
    681.2×
  92. 90CopiapóAtacama, Chile
    681.2×
  93. 90ConcónValparaiso, Chile
    681.2×
  94. 94IndioCalifornia, United States
    681.2×
  95. 95LawrencevilleGeorgia, United States
    681.2×
  96. 96BerkeleyCalifornia, United States
    671.2×
  97. 97CalamaAntofagasta, Chile
    671.2×
  98. 98Inglewoodlow-cost sensorsCalifornia, United States
    661.2×
  99. 99RacibórzSilesia, Poland
    661.2×
  100. 99Viña del MarValparaiso, Chile
    661.2×
  101. 99PasadenaTexas, United States
    661.2×
  102. 102SpartanburgSouth Carolina, United States
    661.1×
  103. 102CasperWyoming, United States
    661.1×
  104. 104Saint AndrewsSouth Carolina, United States
    661.1×
  105. 105ColomboWestern Province, Sri Lanka
    661.1×
  106. 106MumbaiMaharashtra, India
    661.1×
  107. 106CallaoCallao, Peru
    661.1×
  108. 108Jastrzębie ZdrójSilesia, Poland
    651.1×
  109. 109Nong KhaemBangkok, Thailand
    651.1×
  110. 109Ban Samae DamBangkok, Thailand
    651.1×
  111. 109AraoKumamoto, Japan
    651.1×
  112. 112QuilpuéValparaiso, Chile
    651.1×
  113. 112Alto HospicioTarapacá, Chile
    651.1×
  114. 114BuziTaiwan, Taiwan
    651.1×
  115. 114ŻywiecSilesia, Poland
    651.1×
  116. 114CoquimboCoquimbo Region, Chile
    651.1×
  117. 117Kathmandulow-cost sensorsBagmati Province, Nepal
    641.1×
  118. 117Bang NaBangkok, Thailand
    641.1×
  119. 117FengshanTakao, Taiwan
    641.1×
  120. 117La SerenaCoquimbo Region, Chile
    641.1×
  121. 117Lomitalow-cost sensorsCalifornia, United States
    641.1×
  122. 122ToméBiobio, Chile
    641.1×
  123. 122NogalesSonora, Mexico
    641.1×
  124. 124AlgiersAlgiers, Algeria
    641.1×
  125. 125Banja LukaSrpska, Bosnia and Herzegovina
    641.1×
  126. 126KaliszGreater Poland, Poland
    631.0×
  127. 126ChillánÑuble, Chile
    631.0×
  128. 128Uekimachi-mōnoKumamoto, Japan
    631.0×
  129. 128ŌmutaFukuoka, Japan
    631.0×
  130. 130TalaganteSantiago Metropolitan, Chile
    631.0×
  131. 130San ClementeIca, Peru
    631.0×
  132. 132LotaBiobio, Chile
    621.0×
  133. 132CauquenesMaule Region, Chile
    621.0×
  134. 132HanfordCalifornia, United States
    621.0×
  135. 132El PasoTexas, United States
    621.0×
  136. 136Medina Estateslow-cost sensorsGreater Accra, Ghana
    621.0×
  137. 136ZgierzŁódź Voivodeship, Poland
    621.0×
  138. 136Villa Poeta José Gálvez BarrenecheaLima region, Peru
    621.0×
  139. 139Imperial BeachCalifornia, United States
    621.0×
  140. 140TamanaKumamoto, Japan
    621.0×
  141. 140ChocopeLa Libertad, Peru
    621.0×
  142. 140FresnoCalifornia, United States
    621.0×
  143. 143Kędzierzyn-KoźleOpole Voivodeship, Poland
    611.0×
  144. 144KłodzkoLower Silesia, Poland
    611.0×
  145. 144ChiguayanteBiobio, Chile
    611.0×
  146. 146TalcahuanoBiobio, Chile
    611.0×
  147. 146Long BeachCalifornia, United States
    611.0×
  148. 148ŌtsukiYamanashi, Japan
    611.0×
  149. 149ŌmuraNagasaki, Japan
    611.0×
  150. 149San Pedro de la PazBiobio, Chile
    611.0×
  151. 151Ulan BatorUlaanbaatar, Mongolia
    610.9×
  152. 151AnaheimCalifornia, United States
    610.9×
  153. 153NajuJeollanam-do, South Korea
    600.9×
  154. 153Saphan SungBangkok, Thailand
    600.9×
  155. 155DallasTexas, United States
    600.9×
  156. 156XizhouTaiwan, Taiwan
    600.9×
  157. 156GifuGifu, Japan
    600.9×
  158. 156ConroeTexas, United States
    600.9×
  159. 159ObitaNagasaki, Japan
    600.9×
  160. 159Los ÁngelesBiobio, Chile
    600.9×
  161. 159Yuba CityCalifornia, United States
    600.9×
  162. 162HonmachiKumamoto, Japan
    590.9×
  163. 162ConcepciónBiobio, Chile
    590.9×
  164. 162San DiegoCalifornia, United States
    590.9×
  165. 165TogitsuNagasaki, Japan
    590.9×
  166. 165IsahayaNagasaki, Japan
    590.9×
  167. 165Winston-SalemNorth Carolina, United States
    590.9×
  168. 168BurbankCalifornia, United States
    590.9×
  169. 168OaklandCalifornia, United States
    590.9×
  170. 170TokiGifu, Japan
    590.9×
  171. 170KurumeFukuoka, Japan
    590.9×
  172. 170Chula VistaCalifornia, United States
    590.9×
  173. 170VisaliaCalifornia, United States
    590.9×
  174. 174Santa Monicalow-cost sensorsCalifornia, United States
    590.9×
  175. 174Fort CollinsColorado, United States
    590.9×
  176. 176TalcaMaule Region, Chile
    580.9×
  177. 176AtlantaGeorgia, United States
    580.9×
  178. 176GreensboroNorth Carolina, United States
    580.9×
  179. 179OtwockMazovia, Poland
    580.9×
  180. 179Jurong WestSingapore
    580.9×
  181. 179FlorenceSouth Carolina, United States
    580.9×
  182. 179PortervilleCalifornia, United States
    580.9×
  183. 179San JoseCalifornia, United States
    580.9×
  184. 184SaseboNagasaki, Japan
    580.9×
  185. 184KureHiroshima, Japan
    580.9×
  186. 184OwariasahiAichi, Japan
    580.9×
  187. 184Arden-ArcadeCalifornia, United States
    580.9×
  188. 188Skarżysko-KamiennaŚwiętokrzyskie, Poland
    580.9×
  189. 188Maebaru-chūōFukuoka, Japan
    580.9×
  190. 188RabinalBaja Verapaz, Guatemala
    580.9×
  191. 188CharlotteNorth Carolina, United States
    580.9×
  192. 188MorrisvilleNorth Carolina, United States
    580.9×
  193. 188Khan Na YaoBangkok, Thailand
    580.9×
  194. 188SaikaiNagasaki, Japan
    580.9×
  195. 195Novi PazarCentral Serbia, Serbia
    580.8×
  196. 195YamagaKumamoto, Japan
    580.8×
  197. 195ŌzuKumamoto, Japan
    580.8×
  198. 195AmagasakiHyōgo, Japan
    580.8×
  199. 195ClovisCalifornia, United States
    580.8×
  200. 195RichmondCalifornia, United States
    580.8×

Top 200 of 1,724 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 30, 2024, smogrank.com/history/2024-09-30 (accessed 3 Oct 2026).

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