SmogRank / History / September 9, 2024

Most polluted cities on September 9, 2024

1,702 cities ranked by their average PM2.5 over the day; the worst was Asunción, Paraguay, at 108.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 9, 2024. All episodes.

← Asunción 108.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for September 9, 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. 1Asunciónlow-cost sensorsAsuncion, Paraguay
    1887.2×
  2. 2Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1665.2×
  3. 3VillarricaAraucania, Chile
    1624.8×
  4. 4ButteMontana, United States
    1624.7×
  5. 5HelenaMontana, United States
    1614.6×
  6. 6Lahorelow-cost sensorsPunjab, Pakistan
    1584.4×
  7. 7BendOregon, United States
    1584.4×
  8. 8OsornoLos Lagos Region, Chile
    1574.3×
  9. 9Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1564.2×
  10. 10Jurupa ValleyCalifornia, United States
    1564.2×
  11. 11Santa Anita - Los FicusLima region, Peru
    1564.2×
  12. 12FontanaCalifornia, United States
    1533.9×
  13. 13MissoulaMontana, United States
    1523.8×
  14. 14RiversideCalifornia, United States
    1523.8×
  15. 15DushanbeDushanbe, Tajikistan
    1473.6×
  16. 16BeijingBeijing, China
    1453.6×
  17. 17ValdiviaLos Ríos Region, Chile
    1423.5×
  18. 18BaghdadBaghdad, Iraq
    1403.4×
  19. 19HualpénBiobio, Chile
    1343.3×
  20. 20Kampalalow-cost sensorsCentral Region, Uganda
    1313.2×
  21. 21CuranilahueBiobio, Chile
    1303.1×
  22. 22TemucoAraucania, Chile
    1283.1×
  23. 22GlendoraCalifornia, United States
    1283.1×
  24. 24CuricóMaule Region, Chile
    1253.0×
  25. 25NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    1182.8×
  26. 26Puerto VarasLos Lagos Region, Chile
    1182.8×
  27. 27Iloilolow-cost sensorsWestern Visayas, Philippines
    1172.8×
  28. 28DelhiDelhi, India
    1162.8×
  29. 29La UniónLos Ríos Region, Chile
    1152.7×
  30. 30RancaguaO'Higgins Region, Chile
    1142.7×
  31. 31RengoO'Higgins Region, Chile
    1122.7×
  32. 32AntananarivoAnalamanga, Madagascar
    1102.6×
  33. 33CairoCairo, Egypt
    1092.6×
  34. 34Addis AbabaAddis Ababa, Ethiopia
    1092.6×
  35. 34RedmondOregon, United States
    1092.6×
  36. 36Puente AltoSantiago Metropolitan, Chile
    1082.5×
  37. 36BozemanMontana, United States
    1082.5×
  38. 38CoyhaiqueAysén, Chile
    1062.5×
  39. 38Fort McMurrayAlberta, Canada
    1062.5×
  40. 40LewistonIdaho, United States
    1062.5×
  41. 41Villa Poeta José Gálvez BarrenecheaLima region, Peru
    1052.5×
  42. 42Lake ElsinoreCalifornia, United States
    1032.4×
  43. 43Kathmandulow-cost sensorsBagmati Province, Nepal
    1032.4×
  44. 44KigaliKigali, Rwanda
    1002.4×
  45. 44SantiagoSantiago Metropolitan, Chile
    1002.4×
  46. 46CoronelBiobio, Chile
    992.3×
  47. 47San Francisco De BorjaLima region, Peru
    982.3×
  48. 48AlgiersAlgiers, Algeria
    962.2×
  49. 49Şabāḩ as SālimMubārak al Kabīr, Kuwait
    962.2×
  50. 49JakartaJakarta, Indonesia
    962.2×
  51. 49Jacobo HunterArequipa, Peru
    962.2×
  52. 52Islamabadlow-cost sensorsIslamabad, Pakistan
    962.2×
  53. 53HualquiBiobio, Chile
    952.2×
  54. 54BillingsMontana, United States
    952.2×
  55. 55NacimientoBiobio, Chile
    942.1×
  56. 56QuillotaValparaiso, Chile
    912.0×
  57. 56Puerto MonttLos Lagos Region, Chile
    912.0×
  58. 58ChiguayanteBiobio, Chile
    902.0×
  59. 59TalcaMaule Region, Chile
    902.0×
  60. 60ChillánÑuble, Chile
    902.0×
  61. 61N'DjamenaN’Djaména, Chad
    902.0×
  62. 62QuinteroValparaiso, Chile
    892.0×
  63. 63Abujalow-cost sensorsFCT, Nigeria
    881.9×
  64. 64ToméBiobio, Chile
    881.9×
  65. 65BanningCalifornia, United States
    871.9×
  66. 66Los ÁngelesBiobio, Chile
    861.9×
  67. 67Prince AlbertSaskatchewan, Canada
    861.9×
  68. 68KimjeJeollabuk-do, South Korea
    851.8×
  69. 69Dhakalow-cost sensorsDhaka Division, Bangladesh
    851.8×
  70. 70TalaganteSantiago Metropolitan, Chile
    841.8×
  71. 71Viña del MarValparaiso, Chile
    841.8×
  72. 72San Pedro de la PazBiobio, Chile
    831.7×
  73. 73San ClementeIca, Peru
    831.7×
  74. 74JeongeupJeollabuk-do, South Korea
    821.7×
  75. 75CauquenesMaule Region, Chile
    811.7×
  76. 76TalcahuanoBiobio, Chile
    811.7×
  77. 76Medicine HatAlberta, Canada
    811.7×
  78. 78GunsanJeollabuk-do, South Korea
    811.7×
  79. 79Hondomachi-hondoKumamoto, Japan
    801.7×
  80. 79YanacanchaPasco, Peru
    801.7×
  81. 81Puerto AysénAysén, Chile
    801.6×
  82. 82La SerenaCoquimbo Region, Chile
    801.6×
  83. 83Hwaseong-siGyeonggi-do, South Korea
    801.6×
  84. 84NonsanChungcheongnam-do, South Korea
    801.6×
  85. 85YesanChungcheongnam-do, South Korea
    791.6×
  86. 86BuanJeollabuk-do, South Korea
    791.6×
  87. 86AsanChungcheongnam-do, South Korea
    791.6×
  88. 86IksanJeollabuk-do, South Korea
    791.6×
  89. 86NakatsuOita, Japan
    791.6×
  90. 90ConcónValparaiso, Chile
    791.6×
  91. 91IncheonIncheon, South Korea
    791.6×
  92. 92CalgaryAlberta, Canada
    781.6×
  93. 93Ganghwa-gunIncheon, South Korea
    781.6×
  94. 94TangjinChungcheongnam-do, South Korea
    781.6×
  95. 94PyeongtaekGyeonggi-do, South Korea
    781.6×
  96. 96WanjuJeollabuk-do, South Korea
    771.6×
  97. 96CranbrookBritish Columbia, Canada
    771.6×
  98. 98SeonghwanChungcheongnam-do, South Korea
    771.5×
  99. 98Gimpo-siGyeonggi-do, South Korea
    771.5×
  100. 100YauriCuzco Department, Peru
    771.5×
  101. 100VictorvilleCalifornia, United States
    771.5×
  102. 102OsanGyeonggi-do, South Korea
    771.5×
  103. 102NamsaJeollabuk-do, South Korea
    771.5×
  104. 102KureHiroshima, Japan
    771.5×
  105. 105QuilpuéValparaiso, Chile
    761.5×
  106. 106CoquimboCoquimbo Region, Chile
    761.5×
  107. 106MoscowIdaho, United States
    761.5×
  108. 108MimaTokushima, Japan
    761.5×
  109. 109Ansan-siGyeonggi-do, South Korea
    751.5×
  110. 110GilletteWyoming, United States
    751.5×
  111. 110SaikaiNagasaki, Japan
    751.5×
  112. 112BuyeoChungcheongnam-do, South Korea
    751.5×
  113. 112ConcepciónBiobio, Chile
    751.5×
  114. 114HonmachiKumamoto, Japan
    741.4×
  115. 115TogitsuNagasaki, Japan
    741.4×
  116. 115ŌitaOita, Japan
    741.4×
  117. 115Ōyanomachi-noboritateKumamoto, Japan
    741.4×
  118. 118YŏnmuChungcheongnam-do, South Korea
    741.4×
  119. 118AntofagastaAntofagasta, Chile
    741.4×
  120. 120SuwonGyeonggi-do, South Korea
    741.4×
  121. 120SaijōEhime, Japan
    741.4×
  122. 122KurumeFukuoka, Japan
    741.4×
  123. 123MokpoJeollanam-do, South Korea
    731.4×
  124. 123HanamGyeonggi-do, South Korea
    731.4×
  125. 125IyoEhime, Japan
    731.4×
  126. 126ŌmutaFukuoka, Japan
    731.4×
  127. 126ObitaNagasaki, Japan
    731.4×
  128. 128SaseboNagasaki, Japan
    731.4×
  129. 128ShūnanYamaguchi, Japan
    731.4×
  130. 130TakeharaHiroshima, Japan
    731.4×
  131. 131NiihamaEhime, Japan
    721.4×
  132. 131GwangmyeongGyeonggi-do, South Korea
    721.4×
  133. 133ŌtsukiYamanashi, Japan
    721.4×
  134. 133IkedachōTokushima, Japan
    721.4×
  135. 133AirdrieAlberta, Canada
    721.4×
  136. 133YawatahamaEhime, Japan
    721.4×
  137. 137PrzemyślSubcarpathia, Poland
    721.4×
  138. 137ŌtakeHiroshima, Japan
    721.4×
  139. 137ImabariEhime, Japan
    721.4×
  140. 140MiharaHiroshima, Japan
    721.4×
  141. 140HōfuYamaguchi, Japan
    721.4×
  142. 142JeonjuJeollabuk-do, South Korea
    721.3×
  143. 143Karachilow-cost sensorsSindh, Pakistan
    711.3×
  144. 143ChennaiTamil Nadu, India
    711.3×
  145. 143Goyang-siGyeonggi-do, South Korea
    711.3×
  146. 143IwakuniYamaguchi, Japan
    711.3×
  147. 143WakasugiFukuoka, Japan
    711.3×
  148. 143AraoKumamoto, Japan
    711.3×
  149. 149NakamaFukuoka, Japan
    711.3×
  150. 149UkihaFukuoka, Japan
    711.3×
  151. 151TocopillaAntofagasta, Chile
    711.3×
  152. 151HigashihiroshimaHiroshima, Japan
    711.3×
  153. 153SeoulSeoul, South Korea
    711.3×
  154. 153ŌmuraNagasaki, Japan
    711.3×
  155. 155ZemunCentral Serbia, Serbia
    711.3×
  156. 155ChocopeLa Libertad, Peru
    711.3×
  157. 157CheonanChungcheongnam-do, South Korea
    711.3×
  158. 157HashimotoWakayama, Japan
    711.3×
  159. 157AricaArica y Parinacota Region, Chile
    711.3×
  160. 157Swift CurrentSaskatchewan, Canada
    711.3×
  161. 157GotōNagasaki, Japan
    711.3×
  162. 162Kawachi-NaganoOsaka, Japan
    701.3×
  163. 162ShikokuchūōEhime, Japan
    701.3×
  164. 164Maebaru-chūōFukuoka, Japan
    701.3×
  165. 164HadongGyeongsangnam-do, South Korea
    701.3×
  166. 166Alto HospicioTarapacá, Chile
    701.3×
  167. 167HwasunJeollanam-do, South Korea
    701.3×
  168. 167Kanzakimachi-kanzakiSaga, Japan
    701.3×
  169. 167Kan’onjichōKagawa, Japan
    701.3×
  170. 167PendletonOregon, United States
    701.3×
  171. 167KinokawaWakayama, Japan
    701.3×
  172. 172LethbridgeAlberta, Canada
    701.3×
  173. 173TagawaFukuoka, Japan
    691.3×
  174. 173NōgataFukuoka, Japan
    691.3×
  175. 173KandaFukuoka, Japan
    691.3×
  176. 173MatsuuraNagasaki, Japan
    691.3×
  177. 173OgōriFukuoka, Japan
    691.3×
  178. 178AshgabatAshgabat, Turkmenistan
    691.3×
  179. 178YamaguchiYamaguchi, Japan
    691.3×
  180. 178OnodaYamaguchi, Japan
    691.3×
  181. 178Coeur d'AleneIdaho, United States
    691.3×
  182. 178ItoshimaFukuoka, Japan
    691.3×
  183. 183Bucheon-siGyeonggi-do, South Korea
    691.3×
  184. 183IizukaFukuoka, Japan
    691.3×
  185. 183SaskatoonSaskatchewan, Canada
    691.3×
  186. 186Koch'angJeollabuk-do, South Korea
    691.2×
  187. 186MatsuyamaEhime, Japan
    691.2×
  188. 186LillestrømAkershus, Norway
    691.2×
  189. 186CopiapóAtacama, Chile
    691.2×
  190. 190SuncheonJeollanam-do, South Korea
    691.2×
  191. 190Guri-siGyeonggi-do, South Korea
    691.2×
  192. 190YanaiYamaguchi, Japan
    691.2×
  193. 190BuzenFukuoka, Japan
    691.2×
  194. 194Anyang-siGyeonggi-do, South Korea
    691.2×
  195. 195NagasakiNagasaki, Japan
    681.2×
  196. 195SejongSejong-si, South Korea
    681.2×
  197. 195MineYamaguchi, Japan
    681.2×
  198. 198TosuSaga, Japan
    681.2×
  199. 198IwadeWakayama, Japan
    681.2×
  200. 198IsahayaNagasaki, Japan
    681.2×

Top 200 of 1,702 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 9, 2024, smogrank.com/history/2024-09-09 (accessed 3 Oct 2026).

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