SmogRank / History / October 2, 2023

Most polluted cities on October 2, 2023

1,829 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 173.0 µg/m³. Each city's own local calendar day.

← N'Djamena 173.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for October 2, 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
    24811.5×
  2. 2JakartaJakarta, Indonesia
    1665.2×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    1614.6×
  4. 4DelhiDelhi, India
    1343.2×
  5. 5Kampalalow-cost sensorsCentral Region, Uganda
    1182.8×
  6. 5AntananarivoAnalamanga, Madagascar
    1182.8×
  7. 7Puerto VarasLos Lagos Region, Chile
    1072.5×
  8. 8Karachilow-cost sensorsSindh, Pakistan
    1072.5×
  9. 8Kuala LumpurKuala Lumpur, Malaysia
    1072.5×
  10. 10Islamabadlow-cost sensorsIslamabad, Pakistan
    1052.5×
  11. 11DushanbeDushanbe, Tajikistan
    1022.4×
  12. 12CairoCairo, Egypt
    1002.3×
  13. 13CuernavacaMorelos, Mexico
    992.3×
  14. 14AlessandriaPiedmont, Italy
    982.3×
  15. 15HanoiHanoi, Vietnam
    962.2×
  16. 16Dhakalow-cost sensorsDhaka Division, Bangladesh
    962.2×
  17. 17Şabāḩ as SālimMubārak al Kabīr, Kuwait
    952.2×
  18. 17NacimientoBiobio, Chile
    952.2×
  19. 19TemucoAraucania, Chile
    952.2×
  20. 19Santa Anita - Los FicusLima region, Peru
    952.2×
  21. 21BamakoBamako, Mali
    932.1×
  22. 22CoyhaiqueAysén, Chile
    902.0×
  23. 23NairobiNairobi County, Kenya
    902.0×
  24. 24LimaLima Province, Peru
    902.0×
  25. 25San Salvador TizatlalliMéxico, Mexico
    881.9×
  26. 26TolucaMéxico, Mexico
    871.9×
  27. 27MumbaiMaharashtra, India
    871.9×
  28. 28XonacatlánMéxico, Mexico
    871.9×
  29. 29PristinaPristina, Kosovo
    861.9×
  30. 30Granadilla de AbonaCanary Islands, Spain
    861.8×
  31. 30La UniónLos Ríos Region, Chile
    861.8×
  32. 32San Francisco TlalcilalcalpanMéxico, Mexico
    851.8×
  33. 33LindauBavaria, Germany
    851.8×
  34. 34OsornoLos Lagos Region, Chile
    851.8×
  35. 34MexicaliBaja California, Mexico
    851.8×
  36. 36Falconara MarittimaThe Marches, Italy
    851.8×
  37. 37ManamaManama, Bahrain
    841.8×
  38. 37San CarlosÑuble, Chile
    841.8×
  39. 39SarajevoFederation of B&H, Bosnia and Herzegovina
    841.8×
  40. 40SalorTashkent Region, Uzbekistan
    821.7×
  41. 41Queenstown Estatelow-cost sensorsSingapore
    821.7×
  42. 42Ang Mo Kio New TownSingapore
    821.7×
  43. 42ZürichZurich, Switzerland
    821.7×
  44. 42AugsburgBavaria, Germany
    821.7×
  45. 45Kempten (Allgäu)Bavaria, Germany
    811.7×
  46. 45Villa Poeta José Gálvez BarrenecheaLima region, Peru
    811.7×
  47. 47HyderabadTelangana, India
    811.7×
  48. 47Los ÁngelesBiobio, Chile
    811.7×
  49. 49Puerto AysénAysén, Chile
    801.7×
  50. 49TlaquepaqueJalisco, Mexico
    801.7×
  51. 51Ulu BedokSingapore
    801.6×
  52. 52MaspalomasCanary Islands, Spain
    791.6×
  53. 53BolzanoTrentino-Alto Adige, Italy
    791.6×
  54. 54TrentoTrentino-Alto Adige, Italy
    791.6×
  55. 54RoveretoTrentino-Alto Adige, Italy
    791.6×
  56. 54NaplesCampania, Italy
    791.6×
  57. 57Las Palmas de Gran CanariaCanary Islands, Spain
    781.6×
  58. 57Lake MaryFlorida, United States
    781.6×
  59. 59QuillotaValparaiso, Chile
    781.6×
  60. 60LakelandFlorida, United States
    771.5×
  61. 61ConcónValparaiso, Chile
    771.5×
  62. 62Addis AbabaAddis Ababa, Ethiopia
    771.5×
  63. 63Ponte Vedra BeachFlorida, United States
    761.5×
  64. 63Winter ParkFlorida, United States
    761.5×
  65. 65Fruit CoveFlorida, United States
    761.5×
  66. 66AntofagastaAntofagasta, Chile
    751.5×
  67. 67TocopillaAntofagasta, Chile
    751.5×
  68. 67RancaguaO'Higgins Region, Chile
    751.5×
  69. 69OcalaFlorida, United States
    751.5×
  70. 70Santa Cruz de TenerifeCanary Islands, Spain
    741.4×
  71. 71MaldegemFlanders, Belgium
    741.4×
  72. 72GuangzhouGuangdong, China
    741.4×
  73. 72Little RockArkansas, United States
    741.4×
  74. 74CuranilahueBiobio, Chile
    741.4×
  75. 75MunichBavaria, Germany
    731.4×
  76. 75SantiagoSantiago Metropolitan, Chile
    731.4×
  77. 75QuinteroValparaiso, Chile
    731.4×
  78. 78CuricóMaule Region, Chile
    731.4×
  79. 79AsprópyrgosAttica, Greece
    731.4×
  80. 79Neu-UlmBavaria, Germany
    731.4×
  81. 79ThionvilleGrand Est, France
    731.4×
  82. 79CoronelBiobio, Chile
    731.4×
  83. 83SliemaTas-Sliema, Malta
    731.4×
  84. 83BaselBasel-City, Switzerland
    731.4×
  85. 85BernBern, Switzerland
    721.4×
  86. 85Saint-ÉtienneAuvergne-Rhône-Alpes, France
    721.4×
  87. 85ChillánÑuble, Chile
    721.4×
  88. 88ShenyangLiaoning, China
    721.4×
  89. 89LuganoTicino, Switzerland
    721.4×
  90. 89IzegemFlanders, Belgium
    721.4×
  91. 89Viña del MarValparaiso, Chile
    721.4×
  92. 89CauquenesMaule Region, Chile
    721.4×
  93. 89ZapopanJalisco, Mexico
    721.4×
  94. 94Wan ChaiWan Chai, Hong Kong
    721.3×
  95. 94Puente AltoSantiago Metropolitan, Chile
    721.3×
  96. 96ParisÎle-de-France, France
    711.3×
  97. 97MenenFlanders, Belgium
    711.3×
  98. 97CallaoCallao, Peru
    711.3×
  99. 99HuelvaAndalusia, Spain
    711.3×
  100. 99WaregemFlanders, Belgium
    711.3×
  101. 99Flémalle-HauteWallonia, Belgium
    711.3×
  102. 102IngenioCanary Islands, Spain
    711.3×
  103. 103BremerhavenBremen, Germany
    711.3×
  104. 103AnsbachBavaria, Germany
    711.3×
  105. 105Puerto MonttLos Lagos Region, Chile
    711.3×
  106. 106La OrotavaCanary Islands, Spain
    701.3×
  107. 106KielSchleswig-Holstein, Germany
    701.3×
  108. 106QuilpuéValparaiso, Chile
    701.3×
  109. 106ChiguayanteBiobio, Chile
    701.3×
  110. 110CandelariaCanary Islands, Spain
    701.3×
  111. 110Sainte-Geneviève-des-BoisÎle-de-France, France
    701.3×
  112. 110Civitanova MarcheThe Marches, Italy
    701.3×
  113. 113EvergemFlanders, Belgium
    701.3×
  114. 114CoquimboCoquimbo Region, Chile
    701.3×
  115. 115NurembergBavaria, Germany
    701.3×
  116. 115JenksOklahoma, United States
    701.3×
  117. 115TulsaOklahoma, United States
    701.3×
  118. 118CoulommiersÎle-de-France, France
    691.3×
  119. 119BitolaBitola, North Macedonia
    691.3×
  120. 119ŻabbarĦaż-Żabbar, Malta
    691.3×
  121. 119Ponca CityOklahoma, United States
    691.3×
  122. 122BellinzonaTicino, Switzerland
    691.3×
  123. 122KortrijkFlanders, Belgium
    691.3×
  124. 122MulhouseGrand Est, France
    691.3×
  125. 122RengoO'Higgins Region, Chile
    691.3×
  126. 126RoeselareFlanders, Belgium
    691.2×
  127. 126Ludwigshafen am RheinRheinland-Pfalz, Germany
    691.2×
  128. 126CholulaPuebla, Mexico
    691.2×
  129. 129NagoOkinawa, Japan
    691.2×
  130. 129StabroekFlanders, Belgium
    691.2×
  131. 129JacksonvilleFlorida, United States
    691.2×
  132. 132CreilHauts-de-France, France
    691.2×
  133. 133StarnbergBavaria, Germany
    681.2×
  134. 133DouaiHauts-de-France, France
    681.2×
  135. 135Kathmandulow-cost sensorsBagmati Province, Nepal
    681.2×
  136. 135NiceProvence-Alpes-Côte d'Azur, France
    681.2×
  137. 137TournaiWallonia, Belgium
    681.2×
  138. 137TrierRheinland-Pfalz, Germany
    681.2×
  139. 137Hradec KrálovéHradec Králové Region, Czechia
    681.2×
  140. 137PisaTuscany, Italy
    681.2×
  141. 137CopiapóAtacama, Chile
    681.2×
  142. 137SavannahGeorgia, United States
    681.2×
  143. 143ZwijndrechtFlanders, Belgium
    681.2×
  144. 143CannesProvence-Alpes-Côte d'Azur, France
    681.2×
  145. 143New LondonConnecticut, United States
    681.2×
  146. 146TopekaKansas, United States
    671.2×
  147. 147SpeyerRheinland-Pfalz, Germany
    671.2×
  148. 147ValenciennesHauts-de-France, France
    671.2×
  149. 147KroměřížZlín, Czechia
    671.2×
  150. 147VigoGalicia, Spain
    671.2×
  151. 147PesaroThe Marches, Italy
    671.2×
  152. 147TalcahuanoBiobio, Chile
    671.2×
  153. 147San Francisco De BorjaLima region, Peru
    671.2×
  154. 154Klagenfurt am WörtherseeCarinthia, Austria
    671.2×
  155. 154KaiserslauternRheinland-Pfalz, Germany
    671.2×
  156. 156GrazStyria, Austria
    671.2×
  157. 156LochristiFlanders, Belgium
    671.2×
  158. 156WeidenBavaria, Germany
    671.2×
  159. 159Nong KhaemBangkok, Thailand
    671.2×
  160. 159BeverenFlanders, Belgium
    671.2×
  161. 159AntwerpFlanders, Belgium
    671.2×
  162. 159MostÚstí nad Labem Region, Czechia
    671.2×
  163. 159AnconaThe Marches, Italy
    671.2×
  164. 159TalaganteSantiago Metropolitan, Chile
    671.2×
  165. 159AricaArica y Parinacota Region, Chile
    671.2×
  166. 166GainesvilleFlorida, United States
    661.2×
  167. 167KagoshimaKagoshima, Japan
    661.2×
  168. 167DenainHauts-de-France, France
    661.2×
  169. 167Alto HospicioTarapacá, Chile
    661.2×
  170. 170SpringdaleArkansas, United States
    661.1×
  171. 171BakuBaki, Azerbaijan
    661.1×
  172. 171OkinawaOkinawa, Japan
    661.1×
  173. 171San IsidroCanary Islands, Spain
    661.1×
  174. 171WormsRheinland-Pfalz, Germany
    661.1×
  175. 171GuadalajaraJalisco, Mexico
    661.1×
  176. 171ChesapeakeVirginia, United States
    661.1×
  177. 177TetovoTetovo, North Macedonia
    661.1×
  178. 177MostaIl-Mosta, Malta
    661.1×
  179. 177GrimbergenFlanders, Belgium
    661.1×
  180. 177ReimsGrand Est, France
    661.1×
  181. 177AnnemasseAuvergne-Rhône-Alpes, France
    661.1×
  182. 177ValdiviaLos Ríos Region, Chile
    661.1×
  183. 177SalamancaGuanajuato, Mexico
    661.1×
  184. 184AronaCanary Islands, Spain
    661.1×
  185. 184OldenburgLower Saxony, Germany
    661.1×
  186. 184DallasTexas, United States
    661.1×
  187. 187KapellenFlanders, Belgium
    651.1×
  188. 187AmiensHauts-de-France, France
    651.1×
  189. 187Fort WorthTexas, United States
    651.1×
  190. 190Tuen MunTuen Mun, Hong Kong
    651.1×
  191. 190DunkirkHauts-de-France, France
    651.1×
  192. 190CapannoriTuscany, Italy
    651.1×
  193. 190CalamaAntofagasta, Chile
    651.1×
  194. 190TampaFlorida, United States
    651.1×
  195. 195AstanaAstana, Kazakhstan
    651.1×
  196. 195Saint-ChamondAuvergne-Rhône-Alpes, France
    651.1×
  197. 195East LakeFlorida, United States
    651.1×
  198. 198ThessaloníkiCentral Macedonia, Greece
    651.1×
  199. 198TalcaMaule Region, Chile
    651.1×
  200. 198La SerenaCoquimbo Region, Chile
    651.1×

Top 200 of 1,829 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 2, 2023, smogrank.com/history/2023-10-02 (accessed 2 Oct 2026).

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