SmogRank / History / October 1, 2024

Most polluted cities on October 1, 2024

1,733 cities ranked by their average PM2.5 over the day; the worst was Baghdad, Iraq, at 129.0 µg/m³. Each city's own local calendar day.

← Baghdad 129.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for October 1, 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. 1BaghdadBaghdad, Iraq
    2048.6×
  2. 2Kampalalow-cost sensorsCentral Region, Uganda
    1957.9×
  3. 3Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1947.8×
  4. 4Asunciónlow-cost sensorsAsuncion, Paraguay
    1846.8×
  5. 5Lahorelow-cost sensorsPunjab, Pakistan
    1665.1×
  6. 6Dhakalow-cost sensorsDhaka Division, Bangladesh
    1604.6×
  7. 7Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1554.0×
  8. 8DelhiDelhi, India
    1533.9×
  9. 9Santa Anita - Los FicusLima region, Peru
    1523.8×
  10. 10JakartaJakarta, Indonesia
    1513.7×
  11. 11KolkataWest Bengal, India
    1463.6×
  12. 12Puerto VarasLos Lagos Region, Chile
    1283.1×
  13. 13AntananarivoAnalamanga, Madagascar
    1253.0×
  14. 14AstanaAstana, Kazakhstan
    1032.4×
  15. 15Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1032.4×
  16. 15HyderabadTelangana, India
    1032.4×
  17. 17MumbaiMaharashtra, India
    1022.4×
  18. 18Islamabadlow-cost sensorsIslamabad, Pakistan
    1012.4×
  19. 19HualpénBiobio, Chile
    992.3×
  20. 20Puerto MonttLos Lagos Region, Chile
    992.3×
  21. 21CoyhaiqueAysén, Chile
    972.3×
  22. 22BakuBaki, Azerbaijan
    962.2×
  23. 23NacimientoBiobio, Chile
    932.1×
  24. 24N'DjamenaN’Djaména, Chad
    922.1×
  25. 25La UniónLos Ríos Region, Chile
    912.0×
  26. 26ManamaManama, Bahrain
    902.0×
  27. 26OsornoLos Lagos Region, Chile
    902.0×
  28. 28VillarricaAraucania, Chile
    902.0×
  29. 28Jacobo HunterArequipa, Peru
    902.0×
  30. 30Addis AbabaAddis Ababa, Ethiopia
    881.9×
  31. 31ValdiviaLos Ríos Region, Chile
    881.9×
  32. 32HanoiHanoi, Vietnam
    871.9×
  33. 33Ulan BatorUlaanbaatar, Mongolia
    861.8×
  34. 34São PauloSão Paulo, Brazil
    851.8×
  35. 35Arvadalow-cost sensorsColorado, United States
    841.8×
  36. 36AshgabatAshgabat, Turkmenistan
    841.8×
  37. 36CoronelBiobio, Chile
    841.8×
  38. 38FontanaCalifornia, United States
    821.7×
  39. 39DenverColorado, United States
    801.7×
  40. 40AntofagastaAntofagasta, Chile
    801.6×
  41. 41Banja LukaSrpska, Bosnia and Herzegovina
    791.6×
  42. 42Fort CollinsColorado, United States
    791.6×
  43. 43Jurupa ValleyCalifornia, United States
    781.6×
  44. 44ThorntonColorado, United States
    771.6×
  45. 45FresnoCalifornia, United States
    771.5×
  46. 46LongmontColorado, United States
    771.5×
  47. 47Wan ChaiWan Chai, Hong Kong
    771.5×
  48. 48San Francisco De BorjaLima region, Peru
    771.5×
  49. 49Bang NaBangkok, Thailand
    761.5×
  50. 49BogotáBogota D.C., Colombia
    761.5×
  51. 51RacibórzSilesia, Poland
    761.5×
  52. 52RiversideCalifornia, United States
    751.5×
  53. 53LittletonColorado, United States
    751.5×
  54. 54Jastrzębie ZdrójSilesia, Poland
    751.5×
  55. 55YuanlinTaiwan, Taiwan
    741.4×
  56. 56Puerto AysénAysén, Chile
    741.4×
  57. 57AraoKumamoto, Japan
    741.4×
  58. 58AlgiersAlgiers, Algeria
    741.4×
  59. 59TocopillaAntofagasta, Chile
    741.4×
  60. 60CallaoCallao, Peru
    741.4×
  61. 61Villa Poeta José Gálvez BarrenecheaLima region, Peru
    731.4×
  62. 62SantiagoSantiago Metropolitan, Chile
    731.4×
  63. 63BuziTaiwan, Taiwan
    731.4×
  64. 64OtwockMazovia, Poland
    731.4×
  65. 64GuangzhouGuangdong, China
    731.4×
  66. 64HualquiBiobio, Chile
    731.4×
  67. 67ErlunTaiwan, Taiwan
    721.4×
  68. 68Puente AltoSantiago Metropolitan, Chile
    721.4×
  69. 68HanfordCalifornia, United States
    721.4×
  70. 70ChanghuaTaiwan, Taiwan
    711.3×
  71. 70QuinteroValparaiso, Chile
    711.3×
  72. 70ChillánÑuble, Chile
    711.3×
  73. 73Kathmandulow-cost sensorsBagmati Province, Nepal
    711.3×
  74. 74CopiapóAtacama, Chile
    711.3×
  75. 75Novi PazarCentral Serbia, Serbia
    701.3×
  76. 76DushanbeDushanbe, Tajikistan
    701.3×
  77. 76CuranilahueBiobio, Chile
    701.3×
  78. 78Skarżysko-KamiennaŚwiętokrzyskie, Poland
    691.3×
  79. 78FanlingNorth District, Hong Kong
    691.3×
  80. 78QuillotaValparaiso, Chile
    691.3×
  81. 81ŻywiecSilesia, Poland
    691.3×
  82. 81CauquenesMaule Region, Chile
    691.3×
  83. 81BoulderColorado, United States
    691.3×
  84. 81SheridanWyoming, United States
    691.3×
  85. 85ChiguayanteBiobio, Chile
    691.3×
  86. 86Tuen MunTuen Mun, Hong Kong
    691.2×
  87. 87KurumeFukuoka, Japan
    691.2×
  88. 87RancaguaO'Higgins Region, Chile
    691.2×
  89. 89TaichungTaiwan, Taiwan
    681.2×
  90. 89TemucoAraucania, Chile
    681.2×
  91. 89ConcónValparaiso, Chile
    681.2×
  92. 92ŌmutaFukuoka, Japan
    681.2×
  93. 92Santa Monicalow-cost sensorsCalifornia, United States
    681.2×
  94. 94TamanaKumamoto, Japan
    681.2×
  95. 95Casas AdobesArizona, United States
    681.2×
  96. 96DouliuTaiwan, Taiwan
    671.2×
  97. 96SandachōHyōgo, Japan
    671.2×
  98. 96La SerenaCoquimbo Region, Chile
    671.2×
  99. 99San ClementeIca, Peru
    671.2×
  100. 100MaranaArizona, United States
    671.2×
  101. 101CalamaAntofagasta, Chile
    671.2×
  102. 102HonmachiKumamoto, Japan
    671.2×
  103. 103ClovisCalifornia, United States
    661.2×
  104. 104XinyingTaiwan, Taiwan
    661.1×
  105. 104BeigangTaiwan, Taiwan
    661.1×
  106. 104YamagaKumamoto, Japan
    661.1×
  107. 104KłodzkoLower Silesia, Poland
    661.1×
  108. 104AricaArica y Parinacota Region, Chile
    661.1×
  109. 109FukuroiShizuoka, Japan
    661.1×
  110. 109Czechowice-DziedziceSilesia, Poland
    661.1×
  111. 111BakersfieldCalifornia, United States
    661.1×
  112. 112TaibaoTaiwan, Taiwan
    661.1×
  113. 112HitaOita, Japan
    661.1×
  114. 112CoquimboCoquimbo Region, Chile
    661.1×
  115. 112PortervilleCalifornia, United States
    661.1×
  116. 112Ken CarylColorado, United States
    661.1×
  117. 117VisaliaCalifornia, United States
    651.1×
  118. 118Uekimachi-mōnoKumamoto, Japan
    651.1×
  119. 118KikuchiKumamoto, Japan
    651.1×
  120. 118WoodlandsSingapore
    651.1×
  121. 118TalcahuanoBiobio, Chile
    651.1×
  122. 118CuricóMaule Region, Chile
    651.1×
  123. 118El PasoTexas, United States
    651.1×
  124. 124NiskoSubcarpathia, Poland
    651.1×
  125. 124Alto HospicioTarapacá, Chile
    651.1×
  126. 126Kanzakimachi-kanzakiSaga, Japan
    651.1×
  127. 126Los ÁngelesBiobio, Chile
    651.1×
  128. 128ErlinTaiwan, Taiwan
    651.1×
  129. 128ToméBiobio, Chile
    651.1×
  130. 128Imperial BeachCalifornia, United States
    651.1×
  131. 131MaputoMaputo City, Mozambique
    641.1×
  132. 131MinamataKumamoto, Japan
    641.1×
  133. 133UtoKumamoto, Japan
    641.1×
  134. 133Viña del MarValparaiso, Chile
    641.1×
  135. 133Khlong Sam WaBangkok, Thailand
    641.1×
  136. 136SagaSaga, Japan
    641.1×
  137. 136SarajevoFederation of B&H, Bosnia and Herzegovina
    641.1×
  138. 136Lake ElsinoreCalifornia, United States
    641.1×
  139. 139TosuSaga, Japan
    641.1×
  140. 139Ōyanomachi-noboritateKumamoto, Japan
    641.1×
  141. 139IsahayaNagasaki, Japan
    641.1×
  142. 139ConcepciónBiobio, Chile
    641.1×
  143. 139UkihaFukuoka, Japan
    641.1×
  144. 144Khlong LuangPathum Thani, Thailand
    631.1×
  145. 144OgōriFukuoka, Japan
    631.1×
  146. 146KakegawaShizuoka, Japan
    631.0×
  147. 147Mong KokYau Tsim Mong District, Hong Kong
    631.0×
  148. 147TogitsuNagasaki, Japan
    631.0×
  149. 147MinatoWakayama, Japan
    631.0×
  150. 147AnanTokushima, Japan
    631.0×
  151. 147Bielsko-BialaSilesia, Poland
    631.0×
  152. 147GlendoraCalifornia, United States
    631.0×
  153. 147HigashihiroshimaHiroshima, Japan
    631.0×
  154. 154ŌmuraNagasaki, Japan
    631.0×
  155. 154NakatsuOita, Japan
    631.0×
  156. 154IkomaNara, Japan
    631.0×
  157. 154CorcoranCalifornia, United States
    631.0×
  158. 158ToufenTaiwan, Taiwan
    631.0×
  159. 158Zielona GóraLubusz, Poland
    631.0×
  160. 160LazarevacCentral Serbia, Serbia
    631.0×
  161. 160NantouTaiwan, Taiwan
    631.0×
  162. 160ŌzuKumamoto, Japan
    631.0×
  163. 160Nara-shiNara, Japan
    631.0×
  164. 160IwadeWakayama, Japan
    631.0×
  165. 165Chiayi CityTaiwan, Taiwan
    621.0×
  166. 165Tai PoTai Po, Hong Kong
    621.0×
  167. 165NagasakiNagasaki, Japan
    621.0×
  168. 165IzumiOsaka, Japan
    621.0×
  169. 165WrocławLower Silesia, Poland
    621.0×
  170. 165MaderaCalifornia, United States
    621.0×
  171. 171HoustonTexas, United States
    621.0×
  172. 171San Pedro de la PazBiobio, Chile
    621.0×
  173. 173ObrenovacCentral Serbia, Serbia
    621.0×
  174. 173SaseboNagasaki, Japan
    621.0×
  175. 173ObitaNagasaki, Japan
    621.0×
  176. 173RengoO'Higgins Region, Chile
    621.0×
  177. 173HigashigōSaga, Japan
    621.0×
  178. 178StarachowiceŚwiętokrzyskie, Poland
    621.0×
  179. 178Tin Shui WaiYuen Long, Hong Kong
    621.0×
  180. 178TokiGifu, Japan
    621.0×
  181. 178NobeokaMiyazaki, Japan
    621.0×
  182. 178TalaganteSantiago Metropolitan, Chile
    621.0×
  183. 178YauriCuzco Department, Peru
    621.0×
  184. 178ConroeTexas, United States
    621.0×
  185. 178Sunland ParkNew Mexico, United States
    621.0×
  186. 186LegionowoMazovia, Poland
    621.0×
  187. 186TaharaAichi, Japan
    621.0×
  188. 186Maebaru-chūōFukuoka, Japan
    621.0×
  189. 186KushikinoKagoshima, Japan
    621.0×
  190. 186Kędzierzyn-KoźleOpole Voivodeship, Poland
    621.0×
  191. 191KishiwadaOsaka, Japan
    611.0×
  192. 191ChocopeLa Libertad, Peru
    611.0×
  193. 191FlorenceSouth Carolina, United States
    611.0×
  194. 191Chula VistaCalifornia, United States
    611.0×
  195. 191Arden-ArcadeCalifornia, United States
    611.0×
  196. 196Ban Samae DamBangkok, Thailand
    611.0×
  197. 196ŌitaOita, Japan
    611.0×
  198. 196AmagasakiHyōgo, Japan
    611.0×
  199. 196KaliszGreater Poland, Poland
    611.0×
  200. 196LotaBiobio, Chile
    611.0×

Top 200 of 1,733 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, October 1, 2024, smogrank.com/history/2024-10-01 (accessed 3 Oct 2026).

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