SmogRank / History / October 9, 2023

Most polluted cities on October 9, 2023

1,811 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 151.0 µg/m³. Each city's own local calendar day.

← N'Djamena 151.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for October 9, 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. 1N'DjamenaN’Djaména, Chad
    22610.1×
  2. 2Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1695.4×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    1655.0×
  4. 4BamakoBamako, Mali
    1594.4×
  5. 5HyderabadTelangana, India
    1584.4×
  6. 5KolkataWest Bengal, India
    1584.4×
  7. 7Dhakalow-cost sensorsDhaka Division, Bangladesh
    1584.3×
  8. 8DelhiDelhi, India
    1473.6×
  9. 9TemucoAraucania, Chile
    1443.5×
  10. 10AntananarivoAnalamanga, Madagascar
    1403.4×
  11. 11JakartaJakarta, Indonesia
    1373.3×
  12. 12MumbaiMaharashtra, India
    1363.3×
  13. 13CairoCairo, Egypt
    1313.2×
  14. 14Islamabadlow-cost sensorsIslamabad, Pakistan
    1253.0×
  15. 15ManamaManama, Bahrain
    1192.9×
  16. 16Kathmandulow-cost sensorsBagmati Province, Nepal
    1172.8×
  17. 17DushanbeDushanbe, Tajikistan
    1072.5×
  18. 18La UniónLos Ríos Region, Chile
    1062.5×
  19. 19SarajevoFederation of B&H, Bosnia and Herzegovina
    1042.5×
  20. 20Santa Anita - Los FicusLima region, Peru
    1042.4×
  21. 21La OrotavaCanary Islands, Spain
    1022.4×
  22. 22SalorTashkent Region, Uzbekistan
    992.3×
  23. 23Kampalalow-cost sensorsCentral Region, Uganda
    972.2×
  24. 24Kuala LumpurKuala Lumpur, Malaysia
    962.2×
  25. 25Karachilow-cost sensorsSindh, Pakistan
    952.2×
  26. 26Şabāḩ as SālimMubārak al Kabīr, Kuwait
    952.2×
  27. 27Saint-NazairePays de la Loire, France
    932.1×
  28. 28HanoiHanoi, Vietnam
    922.1×
  29. 29MexicaliBaja California, Mexico
    912.0×
  30. 30LimaLima Province, Peru
    881.9×
  31. 31Puerto MonttLos Lagos Region, Chile
    871.9×
  32. 32VigoGalicia, Spain
    871.9×
  33. 33Addis AbabaAddis Ababa, Ethiopia
    861.8×
  34. 34Santa Cruz de TenerifeCanary Islands, Spain
    851.8×
  35. 34QuinteroValparaiso, Chile
    851.8×
  36. 36PristinaPristina, Kosovo
    851.8×
  37. 36SantiagoSantiago Metropolitan, Chile
    851.8×
  38. 38FunchalMadeira, Portugal
    851.8×
  39. 38QuillotaValparaiso, Chile
    851.8×
  40. 40JeddahMecca Region, Saudi Arabia
    841.8×
  41. 41Villa Poeta José Gálvez BarrenecheaLima region, Peru
    841.8×
  42. 41Ciudad Benito JuárezNuevo León, Mexico
    841.8×
  43. 43Samut SakhonSamut Sakhon, Thailand
    821.7×
  44. 44Puerto VarasLos Lagos Region, Chile
    821.7×
  45. 45Santa Cruz de la PalmaCanary Islands, Spain
    821.7×
  46. 46Ciudad General EscobedoNuevo León, Mexico
    821.7×
  47. 47Puente AltoSantiago Metropolitan, Chile
    811.7×
  48. 48Las Palmas de Gran CanariaCanary Islands, Spain
    801.7×
  49. 49ValdiviaLos Ríos Region, Chile
    801.6×
  50. 49OsornoLos Lagos Region, Chile
    801.6×
  51. 51Quezon Citylow-cost sensorsNational Capital Region, Philippines
    801.6×
  52. 52IzegemFlanders, Belgium
    791.6×
  53. 52HualquiBiobio, Chile
    791.6×
  54. 54NaplesCampania, Italy
    791.6×
  55. 55La SerenaCoquimbo Region, Chile
    791.6×
  56. 56CoquimboCoquimbo Region, Chile
    781.6×
  57. 57Granadilla de AbonaCanary Islands, Spain
    781.6×
  58. 57TalaganteSantiago Metropolitan, Chile
    781.6×
  59. 59Santa CatarinaNuevo León, Mexico
    781.6×
  60. 60NairobiNairobi County, Kenya
    771.6×
  61. 60Nong KhaemBangkok, Thailand
    771.6×
  62. 62CallaoCallao, Peru
    771.5×
  63. 63NacimientoBiobio, Chile
    771.5×
  64. 63CoronelBiobio, Chile
    771.5×
  65. 65Viña del MarValparaiso, Chile
    761.5×
  66. 66CuernavacaMorelos, Mexico
    761.5×
  67. 67ShenyangLiaoning, China
    761.5×
  68. 67WaregemFlanders, Belgium
    761.5×
  69. 69CandelariaCanary Islands, Spain
    751.5×
  70. 70Ciudad ApodacaNuevo León, Mexico
    751.5×
  71. 71TocopillaAntofagasta, Chile
    751.5×
  72. 71CoyhaiqueAysén, Chile
    751.5×
  73. 73EvergemFlanders, Belgium
    741.4×
  74. 73AntofagastaAntofagasta, Chile
    741.4×
  75. 75CopiapóAtacama, Chile
    741.4×
  76. 75Carsonlow-cost sensorsCalifornia, United States
    741.4×
  77. 77AthensAttica, Greece
    741.4×
  78. 77ConcónValparaiso, Chile
    741.4×
  79. 79ToméBiobio, Chile
    741.4×
  80. 80CardiffWales, United Kingdom
    741.4×
  81. 81Mollet del VallèsCatalonia, Spain
    731.4×
  82. 82San IsidroCanary Islands, Spain
    731.4×
  83. 83StabroekFlanders, Belgium
    731.4×
  84. 84BangkokBangkok, Thailand
    721.4×
  85. 85CuricóMaule Region, Chile
    721.4×
  86. 85Lomitalow-cost sensorsCalifornia, United States
    721.4×
  87. 87CuranilahueBiobio, Chile
    721.4×
  88. 88Falconara MarittimaThe Marches, Italy
    721.3×
  89. 89TlaquepaqueJalisco, Mexico
    711.3×
  90. 90RancaguaO'Higgins Region, Chile
    711.3×
  91. 91Torrancelow-cost sensorsCalifornia, United States
    711.3×
  92. 92Puerto AysénAysén, Chile
    711.3×
  93. 93QuilpuéValparaiso, Chile
    711.3×
  94. 94ZwijndrechtFlanders, Belgium
    701.3×
  95. 94DunkirkHauts-de-France, France
    701.3×
  96. 96RoeselareFlanders, Belgium
    701.3×
  97. 96KoksijdeFlanders, Belgium
    701.3×
  98. 96Victoria de DurangoDurango, Mexico
    701.3×
  99. 99AsprópyrgosAttica, Greece
    701.3×
  100. 100LotaBiobio, Chile
    701.3×
  101. 101ChiguayanteBiobio, Chile
    691.3×
  102. 102MaldegemFlanders, Belgium
    691.3×
  103. 103Bang Bo DistrictSamut Prakan, Thailand
    691.2×
  104. 104BeverenFlanders, Belgium
    691.2×
  105. 105ConcepciónBiobio, Chile
    691.2×
  106. 106AntwerpFlanders, Belgium
    681.2×
  107. 106RengoO'Higgins Region, Chile
    681.2×
  108. 108Phra PradaengSamut Prakan, Thailand
    681.2×
  109. 109BernBern, Switzerland
    681.2×
  110. 109LochristiFlanders, Belgium
    681.2×
  111. 109LleidaCatalonia, Spain
    681.2×
  112. 112Mueang NonthaburiNonthaburi, Thailand
    681.2×
  113. 112GentFlanders, Belgium
    681.2×
  114. 112ParisÎle-de-France, France
    681.2×
  115. 115AmoraSetúbal, Portugal
    681.2×
  116. 115WillebroekFlanders, Belgium
    681.2×
  117. 115A CoruñaGalicia, Spain
    681.2×
  118. 115San CarlosÑuble, Chile
    681.2×
  119. 119ManlleuCatalonia, Spain
    671.2×
  120. 119TalcaMaule Region, Chile
    671.2×
  121. 121GrimbergenFlanders, Belgium
    671.2×
  122. 121AnconaThe Marches, Italy
    671.2×
  123. 121FontanaCalifornia, United States
    671.2×
  124. 124TetovoTetovo, North Macedonia
    671.2×
  125. 124FlorenceTuscany, Italy
    671.2×
  126. 126AgüimesCanary Islands, Spain
    671.2×
  127. 126SliemaTas-Sliema, Malta
    671.2×
  128. 126DurangoBasque Country, Spain
    671.2×
  129. 126SalamancaGuanajuato, Mexico
    671.2×
  130. 130MaspalomasCanary Islands, Spain
    671.2×
  131. 130MenenFlanders, Belgium
    671.2×
  132. 130Joué-lès-ToursCentre-Val de Loire, France
    671.2×
  133. 130TalcahuanoBiobio, Chile
    671.2×
  134. 130Los AngelesCalifornia, United States
    671.2×
  135. 130Santa Monicalow-cost sensorsCalifornia, United States
    671.2×
  136. 136ConakryConakry, Guinea
    661.2×
  137. 136ValdemoroMadrid, Spain
    661.2×
  138. 136Los ÁngelesBiobio, Chile
    661.2×
  139. 139ArucasCanary Islands, Spain
    661.2×
  140. 139MostaIl-Mosta, Malta
    661.2×
  141. 139ValenciennesHauts-de-France, France
    661.2×
  142. 139MontemurloTuscany, Italy
    661.2×
  143. 139Inglewoodlow-cost sensorsCalifornia, United States
    661.2×
  144. 144AronaCanary Islands, Spain
    661.1×
  145. 144Alto HospicioTarapacá, Chile
    661.1×
  146. 144ComptonCalifornia, United States
    661.1×
  147. 147CoburgBavaria, Germany
    661.1×
  148. 147ToursCentre-Val de Loire, France
    661.1×
  149. 147Sainte-Geneviève-des-BoisÎle-de-France, France
    661.1×
  150. 147BilbaoBasque Country, Spain
    661.1×
  151. 147Banja LukaSrpska, Bosnia and Herzegovina
    661.1×
  152. 147CauquenesMaule Region, Chile
    661.1×
  153. 147Jurupa ValleyCalifornia, United States
    661.1×
  154. 154CosladaMadrid, Spain
    661.1×
  155. 155Khlong LuangPathum Thani, Thailand
    661.1×
  156. 156PratoTuscany, Italy
    651.1×
  157. 156AnaheimCalifornia, United States
    651.1×
  158. 156CalexicoCalifornia, United States
    651.1×
  159. 159San RoqueAndalusia, Spain
    651.1×
  160. 159BrusselsBrussels Capital, Belgium
    651.1×
  161. 159RoubaixHauts-de-France, France
    651.1×
  162. 159ChillánÑuble, Chile
    651.1×
  163. 163TournaiWallonia, Belgium
    651.1×
  164. 163BarcelonaCatalonia, Spain
    651.1×
  165. 163AricaArica y Parinacota Region, Chile
    651.1×
  166. 166MóstolesMadrid, Spain
    651.1×
  167. 167PiraeusAttica, Greece
    651.1×
  168. 167CuencaCastille-La Mancha, Spain
    651.1×
  169. 167GlendoraCalifornia, United States
    651.1×
  170. 170HuelvaAndalusia, Spain
    641.1×
  171. 170CasertaCampania, Italy
    641.1×
  172. 172La Línea de la ConcepciónAndalusia, Spain
    641.1×
  173. 172Gasteiz / VitoriaBasque Country, Spain
    641.1×
  174. 172Donostia / San SebastiánBasque Country, Spain
    641.1×
  175. 172TijuanaBaja California, Mexico
    641.1×
  176. 176IngenioCanary Islands, Spain
    641.1×
  177. 177BakuBaki, Azerbaijan
    641.1×
  178. 177YangonYangon, Myanmar
    641.1×
  179. 177Laudio / LlodioBasque Country, Spain
    641.1×
  180. 177AlessandriaPiedmont, Italy
    641.1×
  181. 177GuadalajaraJalisco, Mexico
    641.1×
  182. 182Civitanova MarcheThe Marches, Italy
    641.1×
  183. 183MarseilleProvence-Alpes-Côte d'Azur, France
    631.1×
  184. 183La SpeziaLiguria, Italy
    631.1×
  185. 183Hawthornelow-cost sensorsCalifornia, United States
    631.1×
  186. 183San Pedro de la PazBiobio, Chile
    631.1×
  187. 187BitolaBitola, North Macedonia
    631.0×
  188. 187KapellenFlanders, Belgium
    631.0×
  189. 187SaltilloCoahuila, Mexico
    631.0×
  190. 190LisbonLisbon, Portugal
    631.0×
  191. 191Nakhon PathomNakhon Pathom, Thailand
    631.0×
  192. 191MunichBavaria, Germany
    631.0×
  193. 191NarónGalicia, Spain
    631.0×
  194. 191Jardines de la SillaNuevo León, Mexico
    631.0×
  195. 195GroßostheimBavaria, Germany
    631.0×
  196. 196SevillaAndalusia, Spain
    631.0×
  197. 196LindauBavaria, Germany
    631.0×
  198. 196BermeoBasque Country, Spain
    631.0×
  199. 196SalernoCampania, Italy
    631.0×
  200. 196HueytownAlabama, United States
    631.0×

Top 200 of 1,811 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, October 9, 2023, smogrank.com/history/2023-10-09 (accessed 2 Oct 2026).

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