SmogRank / History / October 24, 2023

Most polluted cities on October 24, 2023

1,423 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 143.0 µg/m³. Each city's own local calendar day.

← Lahore 143.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for October 24, 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. 1Lahorelow-cost sensorsPunjab, Pakistan
    2189.5×
  2. 2BeijingBeijing, China
    2159.3×
  3. 3DelhiDelhi, India
    1806.5×
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1745.9×
  5. 5N'DjamenaN’Djaména, Chad
    1745.9×
  6. 6MumbaiMaharashtra, India
    1695.4×
  7. 7HanoiHanoi, Vietnam
    1584.3×
  8. 8CairoCairo, Egypt
    1544.0×
  9. 9ShenyangLiaoning, China
    1513.7×
  10. 10HyderabadTelangana, India
    1333.2×
  11. 11Dhakalow-cost sensorsDhaka Division, Bangladesh
    1263.0×
  12. 12JakartaJakarta, Indonesia
    1233.0×
  13. 13AntananarivoAnalamanga, Madagascar
    1222.9×
  14. 14Karachilow-cost sensorsSindh, Pakistan
    1152.8×
  15. 15Nong KhaemBangkok, Thailand
    1112.6×
  16. 16PristinaPristina, Kosovo
    1102.6×
  17. 17Samut SakhonSamut Sakhon, Thailand
    1052.5×
  18. 18Ulan BatorUlaanbaatar, Mongolia
    1022.4×
  19. 19Abujalow-cost sensorsFCT, Nigeria
    1022.4×
  20. 20Tha BoNong Khai, Thailand
    1012.4×
  21. 21Phra PradaengSamut Prakan, Thailand
    942.1×
  22. 22Şabāḩ as SālimMubārak al Kabīr, Kuwait
    932.1×
  23. 23JeddahMecca Region, Saudi Arabia
    932.1×
  24. 24BangkokBangkok, Thailand
    922.1×
  25. 25Mueang NonthaburiNonthaburi, Thailand
    922.1×
  26. 26Kampalalow-cost sensorsCentral Region, Uganda
    902.0×
  27. 27HualpénBiobio, Chile
    902.0×
  28. 28SarajevoFederation of B&H, Bosnia and Herzegovina
    902.0×
  29. 29Samut PrakanSamut Prakan, Thailand
    892.0×
  30. 29GuangzhouGuangdong, China
    892.0×
  31. 31DushanbeDushanbe, Tajikistan
    892.0×
  32. 32Bang Bo DistrictSamut Prakan, Thailand
    871.9×
  33. 33SalorTashkent Region, Uzbekistan
    861.9×
  34. 34ManamaManama, Bahrain
    851.8×
  35. 35AthensAttica, Greece
    841.8×
  36. 36San CarlosÑuble, Chile
    811.7×
  37. 37Nakhon PathomNakhon Pathom, Thailand
    791.6×
  38. 38ThessaloníkiCentral Macedonia, Greece
    791.6×
  39. 39FujinomiyaShizuoka, Japan
    781.6×
  40. 40OstravaMoravian-Silesian Region, Czechia
    771.5×
  41. 41KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    761.5×
  42. 42Addis AbabaAddis Ababa, Ethiopia
    761.5×
  43. 43AshgabatAshgabat, Turkmenistan
    751.5×
  44. 43NacimientoBiobio, Chile
    751.5×
  45. 45ColomboWestern Province, Sri Lanka
    741.4×
  46. 46Banja LukaSrpska, Bosnia and Herzegovina
    741.4×
  47. 47Quezon Citylow-cost sensorsNational Capital Region, Philippines
    741.4×
  48. 48Kathmandulow-cost sensorsBagmati Province, Nepal
    731.4×
  49. 48TakanabeMiyazaki, Japan
    731.4×
  50. 50RuseRuse, Bulgaria
    731.4×
  51. 51SalamancaGuanajuato, Mexico
    721.3×
  52. 52San Luis de la PazGuanajuato, Mexico
    711.3×
  53. 53QuinteroValparaiso, Chile
    711.3×
  54. 54QuillotaValparaiso, Chile
    711.3×
  55. 55TocopillaAntofagasta, Chile
    711.3×
  56. 56BohumínMoravian-Silesian Region, Czechia
    711.3×
  57. 57AcharnésAttica, Greece
    701.3×
  58. 58CelayaGuanajuato, Mexico
    701.3×
  59. 59BirminghamAlabama, United States
    701.3×
  60. 59Candler-McAfeeGeorgia, United States
    701.3×
  61. 61KhalándrionAttica, Greece
    691.3×
  62. 62BogotáBogota D.C., Colombia
    691.2×
  63. 63BakuBaki, Azerbaijan
    691.2×
  64. 64San Pedro de la PazBiobio, Chile
    681.2×
  65. 65DěčínÚstí nad Labem Region, Czechia
    681.2×
  66. 65São PauloSão Paulo, Brazil
    681.2×
  67. 65Silao de la VictoriaGuanajuato, Mexico
    681.2×
  68. 68AugustaGeorgia, United States
    671.2×
  69. 68East Saint LouisIllinois, United States
    671.2×
  70. 70TalcahuanoBiobio, Chile
    671.2×
  71. 71ConcónValparaiso, Chile
    671.2×
  72. 71HyūgaMiyazaki, Japan
    671.2×
  73. 73TijuanaBaja California, Mexico
    671.2×
  74. 73HattiesburgMississippi, United States
    671.2×
  75. 75ShintomiMiyazaki, Japan
    661.2×
  76. 76CalamaAntofagasta, Chile
    661.2×
  77. 76Baton RougeLouisiana, United States
    661.2×
  78. 78MarugameKagawa, Japan
    661.1×
  79. 78OpavaMoravian-Silesian Region, Czechia
    661.1×
  80. 80KurashikiOkayama, Japan
    661.1×
  81. 81Kan’onjichōKagawa, Japan
    661.1×
  82. 81Viña del MarValparaiso, Chile
    661.1×
  83. 83PátraWest Greece, Greece
    651.1×
  84. 84PiraeusAttica, Greece
    651.1×
  85. 85KasaokaOkayama, Japan
    651.1×
  86. 85LiberpolisCounty of Osijek-Baranja, Croatia
    651.1×
  87. 87YawataKyoto, Japan
    651.1×
  88. 88MiyazakiMiyazaki, Japan
    651.1×
  89. 88SugaiKyoto, Japan
    651.1×
  90. 90NairobiNairobi County, Kenya
    641.1×
  91. 90Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    641.1×
  92. 90AnsfeldenUpper Austria, Austria
    641.1×
  93. 93MiyakonojōMiyazaki, Japan
    641.1×
  94. 93HavířovMoravian-Silesian Region, Czechia
    641.1×
  95. 93RockfordIllinois, United States
    641.1×
  96. 96SzegedCsongrád, Hungary
    641.1×
  97. 96IyoEhime, Japan
    641.1×
  98. 98ZentsujichóKagawa, Japan
    641.1×
  99. 98SandachōHyōgo, Japan
    641.1×
  100. 100Ulu BedokSingapore
    641.1×
  101. 100NagaiYamagata, Japan
    641.1×
  102. 100Ústí nad LabemÚstí nad Labem Region, Czechia
    641.1×
  103. 103SaikiOita, Japan
    631.1×
  104. 104TraunUpper Austria, Austria
    631.0×
  105. 105BizenOkayama, Japan
    631.0×
  106. 106NobeokaMiyazaki, Japan
    631.0×
  107. 106Kashihara-shiNara, Japan
    631.0×
  108. 106Granite CityIllinois, United States
    631.0×
  109. 106AsakuchiOkayama, Japan
    631.0×
  110. 110SōjaOkayama, Japan
    631.0×
  111. 110Nara-shiNara, Japan
    631.0×
  112. 110MontgomeryAlabama, United States
    631.0×
  113. 113OkayamaOkayama, Japan
    621.0×
  114. 113Hradec KrálovéHradec Králové Region, Czechia
    621.0×
  115. 113Little RockArkansas, United States
    621.0×
  116. 116NiihamaEhime, Japan
    621.0×
  117. 116St. LouisMissouri, United States
    621.0×
  118. 116Prince GeorgeBritish Columbia, Canada
    621.0×
  119. 119TsurusakiOita, Japan
    621.0×
  120. 120NabariMie, Japan
    621.0×
  121. 120TatsunoHyōgo, Japan
    621.0×
  122. 122Asunciónlow-cost sensorsAsuncion, Paraguay
    621.0×
  123. 122DearbornMichigan, United States
    621.0×
  124. 124PylaíaCentral Macedonia, Greece
    611.0×
  125. 124KashiwaraNara, Japan
    611.0×
  126. 126ŌitaOita, Japan
    611.0×
  127. 127University CityMissouri, United States
    611.0×
  128. 128TamanoOkayama, Japan
    611.0×
  129. 128FukuyamaHiroshima, Japan
    611.0×
  130. 128LafayetteLouisiana, United States
    611.0×
  131. 128ClintonIowa, United States
    611.0×
  132. 128StocktonCalifornia, United States
    611.0×
  133. 133Ang Mo Kio New TownSingapore
    611.0×
  134. 134Sankt PöltenLower Austria, Austria
    610.9×
  135. 134OlomoucOlomouc Region, Czechia
    610.9×
  136. 134León de los AldamaGuanajuato, Mexico
    610.9×
  137. 137NichinanMiyazaki, Japan
    600.9×
  138. 137HandaAichi, Japan
    600.9×
  139. 139AmstettenLower Austria, Austria
    600.9×
  140. 139ColumbusOhio, United States
    600.9×
  141. 139DetroitMichigan, United States
    600.9×
  142. 139CalexicoCalifornia, United States
    600.9×
  143. 139KaminomaAichi, Japan
    600.9×
  144. 144TenriNara, Japan
    600.9×
  145. 144GyōdaSaitama, Japan
    600.9×
  146. 144SaijōEhime, Japan
    600.9×
  147. 144ŌamiChiba, Japan
    600.9×
  148. 144New OrleansLouisiana, United States
    600.9×
  149. 144RichmondCalifornia, United States
    600.9×
  150. 150IkedachōTokushima, Japan
    600.9×
  151. 150WelsUpper Austria, Austria
    600.9×
  152. 150PerchtoldsdorfLower Austria, Austria
    600.9×
  153. 150KladnoCentral Bohemia, Czechia
    600.9×
  154. 150HigashigōSaga, Japan
    600.9×
  155. 155KlosterneuburgLower Austria, Austria
    600.9×
  156. 155MimaTokushima, Japan
    600.9×
  157. 157BerounCentral Bohemia, Czechia
    590.9×
  158. 157JolietIllinois, United States
    590.9×
  159. 157YufuOita, Japan
    590.9×
  160. 160UjiKyoto, Japan
    590.9×
  161. 160Kakogawachō-honmachiHyōgo, Japan
    590.9×
  162. 160AmagasakiHyōgo, Japan
    590.9×
  163. 160LemayMissouri, United States
    590.9×
  164. 160PeoriaIllinois, United States
    590.9×
  165. 165Uekimachi-mōnoKumamoto, Japan
    590.9×
  166. 165TaharaAichi, Japan
    590.9×
  167. 165WolfsbergCarinthia, Austria
    590.9×
  168. 165JacksonMississippi, United States
    590.9×
  169. 165OaklandCalifornia, United States
    590.9×
  170. 165Redwood CityCalifornia, United States
    590.9×
  171. 165KogaFukuoka, Japan
    590.9×
  172. 165MatsusakaMie, Japan
    590.9×
  173. 173TsuyamaOkayama, Japan
    590.9×
  174. 173BastiaCorsica, France
    590.9×
  175. 173AlbertvilleAuvergne-Rhône-Alpes, France
    590.9×
  176. 173DublinOhio, United States
    590.9×
  177. 177Narutochō-mitsuishiTokushima, Japan
    580.9×
  178. 177KureHiroshima, Japan
    580.9×
  179. 177GrazStyria, Austria
    580.9×
  180. 177AtlantaGeorgia, United States
    580.9×
  181. 177El CentroCalifornia, United States
    580.9×
  182. 177IgaMie, Japan
    580.9×
  183. 183ŌmutaFukuoka, Japan
    580.9×
  184. 183LinzUpper Austria, Austria
    580.9×
  185. 183DavenportIowa, United States
    580.9×
  186. 183YawatahamaEhime, Japan
    580.9×
  187. 187MinatoWakayama, Japan
    580.9×
  188. 188AkashiHyōgo, Japan
    580.9×
  189. 188KadaňÚstí nad Labem Region, Czechia
    580.9×
  190. 188Misato, SaitamaSaitama, Japan
    580.9×
  191. 191TakahashiOkayama, Japan
    580.8×
  192. 191KameyamaMie, Japan
    580.8×
  193. 191RedmondOregon, United States
    580.8×
  194. 194HernandoMississippi, United States
    580.8×
  195. 195KyotoKyoto, Japan
    570.8×
  196. 195KazoSaitama, Japan
    570.8×
  197. 195DenverColorado, United States
    570.8×
  198. 198ShidoKagawa, Japan
    570.8×
  199. 198OnoHyōgo, Japan
    570.8×
  200. 198MenumaSaitama, Japan
    570.8×

Top 200 of 1,423 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 24, 2023, smogrank.com/history/2023-10-24 (accessed 2 Oct 2026).

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