SmogRank / History / October 10, 2023

Most polluted cities on October 10, 2023

1,775 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 139.0 µg/m³. Each city's own local calendar day.

← N'Djamena 139.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for October 10, 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
    2149.3×
  2. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    1745.9×
  3. 3HyderabadTelangana, India
    1705.5×
  4. 4KolkataWest Bengal, India
    1705.5×
  5. 5AntananarivoAnalamanga, Madagascar
    1604.5×
  6. 6JeddahMecca Region, Saudi Arabia
    1523.8×
  7. 7Kathmandulow-cost sensorsBagmati Province, Nepal
    1513.7×
  8. 8DelhiDelhi, India
    1403.4×
  9. 8ShenyangLiaoning, China
    1403.4×
  10. 10CairoCairo, Egypt
    1263.1×
  11. 11Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1212.9×
  12. 12BamakoBamako, Mali
    1182.8×
  13. 13Ulu BedokSingapore
    1172.8×
  14. 14Santa CatarinaNuevo León, Mexico
    1172.8×
  15. 15JakartaJakarta, Indonesia
    1172.8×
  16. 16Ang Mo Kio New TownSingapore
    1122.7×
  17. 17Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1052.5×
  18. 18CoyhaiqueAysén, Chile
    1052.5×
  19. 19Lahorelow-cost sensorsPunjab, Pakistan
    1012.4×
  20. 20DushanbeDushanbe, Tajikistan
    992.3×
  21. 21Queenstown Estatelow-cost sensorsSingapore
    982.3×
  22. 22Samut SakhonSamut Sakhon, Thailand
    972.3×
  23. 23PristinaPristina, Kosovo
    932.1×
  24. 24SarajevoFederation of B&H, Bosnia and Herzegovina
    922.1×
  25. 25Jardines de la SillaNuevo León, Mexico
    922.1×
  26. 26OviedoAsturias, Spain
    902.0×
  27. 27TemucoAraucania, Chile
    902.0×
  28. 28SalorTashkent Region, Uzbekistan
    881.9×
  29. 29HanoiHanoi, Vietnam
    871.9×
  30. 29MexicaliBaja California, Mexico
    871.9×
  31. 31Ciudad Benito JuárezNuevo León, Mexico
    871.9×
  32. 32Addis AbabaAddis Ababa, Ethiopia
    871.9×
  33. 33Santa Anita - Los FicusLima region, Peru
    861.9×
  34. 34HualpénBiobio, Chile
    851.8×
  35. 35Puerto VarasLos Lagos Region, Chile
    851.8×
  36. 36Puerto MonttLos Lagos Region, Chile
    841.8×
  37. 37MumbaiMaharashtra, India
    821.7×
  38. 37Puerto AysénAysén, Chile
    821.7×
  39. 39Karachilow-cost sensorsSindh, Pakistan
    821.7×
  40. 40Nong KhaemBangkok, Thailand
    801.7×
  41. 40CuricóMaule Region, Chile
    801.7×
  42. 42CoquimboCoquimbo Region, Chile
    801.6×
  43. 43SantiagoSantiago Metropolitan, Chile
    791.6×
  44. 44BangkokBangkok, Thailand
    791.6×
  45. 44La UniónLos Ríos Region, Chile
    791.6×
  46. 46Puente AltoSantiago Metropolitan, Chile
    791.6×
  47. 47TocopillaAntofagasta, Chile
    781.6×
  48. 48Ciudad ApodacaNuevo León, Mexico
    781.6×
  49. 49WoodlandsSingapore
    771.5×
  50. 50CardiffWales, United Kingdom
    771.5×
  51. 51QuillotaValparaiso, Chile
    761.5×
  52. 52NairobiNairobi County, Kenya
    751.5×
  53. 52RancaguaO'Higgins Region, Chile
    751.5×
  54. 54TetovoTetovo, North Macedonia
    751.5×
  55. 55IzegemFlanders, Belgium
    751.5×
  56. 55VigoGalicia, Spain
    751.5×
  57. 57Phra PradaengSamut Prakan, Thailand
    751.5×
  58. 57QuinteroValparaiso, Chile
    751.5×
  59. 59Villa Poeta José Gálvez BarrenecheaLima region, Peru
    741.4×
  60. 60OsornoLos Lagos Region, Chile
    741.4×
  61. 61Mueang NonthaburiNonthaburi, Thailand
    741.4×
  62. 61Banja LukaSrpska, Bosnia and Herzegovina
    741.4×
  63. 61ValdiviaLos Ríos Region, Chile
    741.4×
  64. 64AntofagastaAntofagasta, Chile
    741.4×
  65. 65OstravaMoravian-Silesian Region, Czechia
    731.4×
  66. 66NacimientoBiobio, Chile
    731.4×
  67. 67NaplesCampania, Italy
    731.4×
  68. 68OpavaMoravian-Silesian Region, Czechia
    721.4×
  69. 68San CarlosÑuble, Chile
    721.4×
  70. 68CoronelBiobio, Chile
    721.4×
  71. 68HernandoMississippi, United States
    721.4×
  72. 72La SerenaCoquimbo Region, Chile
    711.3×
  73. 72AricaArica y Parinacota Region, Chile
    711.3×
  74. 74MenenFlanders, Belgium
    711.3×
  75. 74MarseilleProvence-Alpes-Côte d'Azur, France
    711.3×
  76. 76Tha BoNong Khai, Thailand
    711.3×
  77. 76Jurong WestSingapore
    711.3×
  78. 76HualquiBiobio, Chile
    711.3×
  79. 79AsprópyrgosAttica, Greece
    711.3×
  80. 79Samut PrakanSamut Prakan, Thailand
    711.3×
  81. 79ŻabbarĦaż-Żabbar, Malta
    711.3×
  82. 79SliemaTas-Sliema, Malta
    711.3×
  83. 83BelgradeCentral Serbia, Serbia
    711.3×
  84. 84Nakhon PathomNakhon Pathom, Thailand
    701.3×
  85. 84StabroekFlanders, Belgium
    701.3×
  86. 84MonterreyNuevo León, Mexico
    701.3×
  87. 87Kuala LumpurKuala Lumpur, Malaysia
    701.3×
  88. 87BohumínMoravian-Silesian Region, Czechia
    701.3×
  89. 87TalcaMaule Region, Chile
    701.3×
  90. 90AthensAttica, Greece
    701.3×
  91. 90Khlong LuangPathum Thani, Thailand
    701.3×
  92. 92LochristiFlanders, Belgium
    691.3×
  93. 93CuernavacaMorelos, Mexico
    691.3×
  94. 93TalaganteSantiago Metropolitan, Chile
    691.3×
  95. 93Los ÁngelesBiobio, Chile
    691.3×
  96. 96CopiapóAtacama, Chile
    691.2×
  97. 97Civitanova MarcheThe Marches, Italy
    691.2×
  98. 97CallaoCallao, Peru
    691.2×
  99. 99Viña del MarValparaiso, Chile
    691.2×
  100. 100OlomoucOlomouc Region, Czechia
    681.2×
  101. 100ConcónValparaiso, Chile
    681.2×
  102. 102LimaLima Province, Peru
    681.2×
  103. 103Islamabadlow-cost sensorsIslamabad, Pakistan
    681.2×
  104. 103AvignonProvence-Alpes-Côte d'Azur, France
    681.2×
  105. 103ChillánÑuble, Chile
    681.2×
  106. 106AmoraSetúbal, Portugal
    681.2×
  107. 106MostaIl-Mosta, Malta
    681.2×
  108. 108ToméBiobio, Chile
    681.2×
  109. 108Alto HospicioTarapacá, Chile
    681.2×
  110. 110Manchesterlow-cost sensorsEngland, United Kingdom
    671.2×
  111. 111ColomboWestern Province, Sri Lanka
    671.2×
  112. 111Almatylow-cost sensorsAlmaty, Kazakhstan
    671.2×
  113. 111AlessandriaPiedmont, Italy
    671.2×
  114. 114Fos-sur-MerProvence-Alpes-Côte d'Azur, France
    671.2×
  115. 115CauquenesMaule Region, Chile
    671.2×
  116. 116ZwijndrechtFlanders, Belgium
    671.2×
  117. 116MaldegemFlanders, Belgium
    671.2×
  118. 116EvergemFlanders, Belgium
    671.2×
  119. 116BeverenFlanders, Belgium
    671.2×
  120. 116TrnavaTrnava Region, Slovakia
    671.2×
  121. 116RengoO'Higgins Region, Chile
    671.2×
  122. 116ConroeTexas, United States
    671.2×
  123. 123BakuBaki, Azerbaijan
    661.2×
  124. 123Falconara MarittimaThe Marches, Italy
    661.2×
  125. 125SarcellesÎle-de-France, France
    661.2×
  126. 125ParisÎle-de-France, France
    661.2×
  127. 127San Pedro de la PazBiobio, Chile
    661.1×
  128. 128Canvey IslandEngland, United Kingdom
    661.1×
  129. 129DunkirkHauts-de-France, France
    661.1×
  130. 130PalenciaCastille and León, Spain
    661.1×
  131. 130TalcahuanoBiobio, Chile
    661.1×
  132. 132East Saint LouisIllinois, United States
    651.1×
  133. 133QuilpuéValparaiso, Chile
    651.1×
  134. 133Ciudad General EscobedoNuevo León, Mexico
    651.1×
  135. 133BirminghamAlabama, United States
    651.1×
  136. 136WiganEngland, United Kingdom
    651.1×
  137. 136WeidenBavaria, Germany
    651.1×
  138. 136LyonAuvergne-Rhône-Alpes, France
    651.1×
  139. 136LormontNew Aquitaine, France
    651.1×
  140. 140CuranilahueBiobio, Chile
    651.1×
  141. 141PřerovOlomouc Region, Czechia
    651.1×
  142. 141NarónGalicia, Spain
    651.1×
  143. 141IndioCalifornia, United States
    651.1×
  144. 144Sainte-Geneviève-des-BoisÎle-de-France, France
    641.1×
  145. 144Cadereyta JiménezNuevo León, Mexico
    641.1×
  146. 144LotaBiobio, Chile
    641.1×
  147. 147BernBern, Switzerland
    641.1×
  148. 147AugsburgBavaria, Germany
    641.1×
  149. 147PerpignanOccitanie, France
    641.1×
  150. 147BeneventoCampania, Italy
    641.1×
  151. 151Wan ChaiWan Chai, Hong Kong
    641.1×
  152. 151PortsmouthEngland, United Kingdom
    641.1×
  153. 151ToursCentre-Val de Loire, France
    641.1×
  154. 151ArlesProvence-Alpes-Côte d'Azur, France
    641.1×
  155. 151CasertaCampania, Italy
    641.1×
  156. 156WaregemFlanders, Belgium
    631.1×
  157. 156TournaiWallonia, Belgium
    631.1×
  158. 156AntwerpFlanders, Belgium
    631.1×
  159. 156TrentoTrentino-Alto Adige, Italy
    631.1×
  160. 156SalernoCampania, Italy
    631.1×
  161. 156Asunciónlow-cost sensorsAsuncion, Paraguay
    631.1×
  162. 162KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    631.0×
  163. 162BitolaBitola, North Macedonia
    631.0×
  164. 162Neu-UlmBavaria, Germany
    631.0×
  165. 162FontanaCalifornia, United States
    631.0×
  166. 166Joué-lès-ToursCentre-Val de Loire, France
    631.0×
  167. 166AnnecyAuvergne-Rhône-Alpes, France
    631.0×
  168. 168PátraWest Greece, Greece
    631.0×
  169. 168BrightonEngland, United Kingdom
    631.0×
  170. 168RoubaixHauts-de-France, France
    631.0×
  171. 168ZvolenBanská Bystrica Region, Slovakia
    631.0×
  172. 168Torrejón de ArdozMadrid, Spain
    631.0×
  173. 168San Francisco De BorjaLima region, Peru
    631.0×
  174. 174CacémLisbon, Portugal
    631.0×
  175. 174KapellenFlanders, Belgium
    631.0×
  176. 174KelheimBavaria, Germany
    631.0×
  177. 174GroßostheimBavaria, Germany
    631.0×
  178. 174CosladaMadrid, Spain
    631.0×
  179. 179Kempten (Allgäu)Bavaria, Germany
    621.0×
  180. 179GardanneProvence-Alpes-Côte d'Azur, France
    621.0×
  181. 179MartinŽilina Region, Slovakia
    621.0×
  182. 179MontemurloTuscany, Italy
    621.0×
  183. 179BolzanoTrentino-Alto Adige, Italy
    621.0×
  184. 184Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France
    621.0×
  185. 184NiceProvence-Alpes-Côte d'Azur, France
    621.0×
  186. 184MeyzieuAuvergne-Rhône-Alpes, France
    621.0×
  187. 184Hradec KrálovéHradec Králové Region, Czechia
    621.0×
  188. 188AlgiersAlgiers, Algeria
    621.0×
  189. 188AnsfeldenUpper Austria, Austria
    621.0×
  190. 188Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    621.0×
  191. 188A CoruñaGalicia, Spain
    621.0×
  192. 188PesaroThe Marches, Italy
    621.0×
  193. 188ChiguayanteBiobio, Chile
    621.0×
  194. 194MunichBavaria, Germany
    621.0×
  195. 194MelunÎle-de-France, France
    621.0×
  196. 196SaltashEngland, United Kingdom
    621.0×
  197. 196LindauBavaria, Germany
    621.0×
  198. 196LunelOccitanie, France
    621.0×
  199. 196Aix-en-ProvenceProvence-Alpes-Côte d'Azur, France
    621.0×
  200. 196ŽilinaŽilina Region, Slovakia
    621.0×

Top 200 of 1,775 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 10, 2023, smogrank.com/history/2023-10-10 (accessed 2 Oct 2026).

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