SmogRank / History / October 19, 2023

Most polluted cities on October 19, 2023

1,735 cities ranked by their average PM2.5 over the day; the worst was Dhaka, Bangladesh, at 102.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during October 19, 2023. All episodes.

← Dhaka 102.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for October 19, 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. 1Dhakalow-cost sensorsDhaka Division, Bangladesh
    1846.8×
  2. 2N'DjamenaN’Djaména, Chad
    1745.9×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    1735.8×
  4. 4HyderabadTelangana, India
    1624.7×
  5. 5KolkataWest Bengal, India
    1614.6×
  6. 6HanoiHanoi, Vietnam
    1594.4×
  7. 7CairoCairo, Egypt
    1574.3×
  8. 8Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1544.0×
  9. 9MumbaiMaharashtra, India
    1413.5×
  10. 10SalorTashkent Region, Uzbekistan
    1363.3×
  11. 11SarajevoFederation of B&H, Bosnia and Herzegovina
    1353.3×
  12. 12JakartaJakarta, Indonesia
    1333.2×
  13. 13BohumínMoravian-Silesian Region, Czechia
    1253.0×
  14. 14Tha BoNong Khai, Thailand
    1243.0×
  15. 15DelhiDelhi, India
    1222.9×
  16. 16Banja LukaSrpska, Bosnia and Herzegovina
    1202.9×
  17. 17GuangzhouGuangdong, China
    1202.9×
  18. 18Karachilow-cost sensorsSindh, Pakistan
    1182.8×
  19. 19OstravaMoravian-Silesian Region, Czechia
    1122.7×
  20. 20Nong KhaemBangkok, Thailand
    1092.6×
  21. 21HualpénBiobio, Chile
    1082.5×
  22. 22Islamabadlow-cost sensorsIslamabad, Pakistan
    1062.5×
  23. 23NacimientoBiobio, Chile
    1032.4×
  24. 24PristinaPristina, Kosovo
    1022.4×
  25. 25TsurusakiOita, Japan
    1002.4×
  26. 26AntananarivoAnalamanga, Madagascar
    1002.4×
  27. 27ŌitaOita, Japan
    952.2×
  28. 28BangkokBangkok, Thailand
    942.1×
  29. 29Samut SakhonSamut Sakhon, Thailand
    942.1×
  30. 30ManamaManama, Bahrain
    932.1×
  31. 31BirminghamAlabama, United States
    932.1×
  32. 32Phra PradaengSamut Prakan, Thailand
    932.1×
  33. 33Hradec KrálovéHradec Králové Region, Czechia
    922.1×
  34. 34HavířovMoravian-Silesian Region, Czechia
    912.0×
  35. 35TurlockCalifornia, United States
    912.0×
  36. 36Mueang NonthaburiNonthaburi, Thailand
    892.0×
  37. 37Şabāḩ as SālimMubārak al Kabīr, Kuwait
    881.9×
  38. 37CuranilahueBiobio, Chile
    881.9×
  39. 37HanfordCalifornia, United States
    881.9×
  40. 40OpavaMoravian-Silesian Region, Czechia
    871.9×
  41. 41AnsfeldenUpper Austria, Austria
    871.9×
  42. 42FresnoCalifornia, United States
    851.8×
  43. 43ToméBiobio, Chile
    851.8×
  44. 44TraunUpper Austria, Austria
    841.8×
  45. 45UtoKumamoto, Japan
    841.8×
  46. 46Bang Bo DistrictSamut Prakan, Thailand
    841.8×
  47. 47TijuanaBaja California, Mexico
    841.8×
  48. 48NakatsuOita, Japan
    831.8×
  49. 48TemucoAraucania, Chile
    831.8×
  50. 50ZnojmoSouth Moravian, Czechia
    821.7×
  51. 51Khlong LuangPathum Thani, Thailand
    821.7×
  52. 52Cluj-NapocaCluj County, Romania
    821.7×
  53. 52IyoEhime, Japan
    821.7×
  54. 52AlessandriaPiedmont, Italy
    821.7×
  55. 52SantiagoSantiago Metropolitan, Chile
    821.7×
  56. 52Los ÁngelesBiobio, Chile
    821.7×
  57. 57Samut PrakanSamut Prakan, Thailand
    821.7×
  58. 58Addis AbabaAddis Ababa, Ethiopia
    821.7×
  59. 58Kathmandulow-cost sensorsBagmati Province, Nepal
    821.7×
  60. 60Tanushimarumachi-toyokiFukuoka, Japan
    821.7×
  61. 61TetovoTetovo, North Macedonia
    811.7×
  62. 62YanaiYamaguchi, Japan
    811.7×
  63. 62Puente AltoSantiago Metropolitan, Chile
    811.7×
  64. 64LinzUpper Austria, Austria
    811.7×
  65. 65AmstettenLower Austria, Austria
    811.7×
  66. 65Puerto VarasLos Lagos Region, Chile
    811.7×
  67. 67CoronelBiobio, Chile
    801.7×
  68. 68WelsUpper Austria, Austria
    801.7×
  69. 69Nakhon PathomNakhon Pathom, Thailand
    801.6×
  70. 69KasaokaOkayama, Japan
    801.6×
  71. 69OlomoucOlomouc Region, Czechia
    801.6×
  72. 69BerounCentral Bohemia, Czechia
    801.6×
  73. 73NobeokaMiyazaki, Japan
    801.6×
  74. 73WoodlandCalifornia, United States
    801.6×
  75. 75MiyakonojōMiyazaki, Japan
    791.6×
  76. 76HikariYamaguchi, Japan
    791.6×
  77. 76TalcahuanoBiobio, Chile
    791.6×
  78. 78Sankt PöltenLower Austria, Austria
    791.6×
  79. 78KlosterneuburgLower Austria, Austria
    791.6×
  80. 78YufuOita, Japan
    791.6×
  81. 81GrazStyria, Austria
    781.6×
  82. 81Frýdek-MístekMoravian-Silesian Region, Czechia
    781.6×
  83. 81HyūgaMiyazaki, Japan
    781.6×
  84. 84BurghausenBavaria, Germany
    781.6×
  85. 85Kuala LumpurKuala Lumpur, Malaysia
    781.6×
  86. 85KurumeFukuoka, Japan
    781.6×
  87. 85CorcoranCalifornia, United States
    781.6×
  88. 85ModestoCalifornia, United States
    781.6×
  89. 89QuillotaValparaiso, Chile
    781.6×
  90. 90DushanbeDushanbe, Tajikistan
    771.6×
  91. 90PassauBavaria, Germany
    771.6×
  92. 92KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    771.5×
  93. 92RancaguaO'Higgins Region, Chile
    771.5×
  94. 92OsornoLos Lagos Region, Chile
    771.5×
  95. 95BeppuOita, Japan
    771.5×
  96. 95Abujalow-cost sensorsFCT, Nigeria
    771.5×
  97. 95PerchtoldsdorfLower Austria, Austria
    771.5×
  98. 95TeltowBrandenburg, Germany
    771.5×
  99. 99SaikiOita, Japan
    771.5×
  100. 100KudamatsuYamaguchi, Japan
    771.5×
  101. 100PardubicePardubice Region, Czechia
    771.5×
  102. 102San CarlosÑuble, Chile
    761.5×
  103. 102AnaheimCalifornia, United States
    761.5×
  104. 104HonmachiKumamoto, Japan
    761.5×
  105. 104NogalesSonora, Mexico
    761.5×
  106. 106HualquiBiobio, Chile
    761.5×
  107. 107CopiapóAtacama, Chile
    761.5×
  108. 108TalaganteSantiago Metropolitan, Chile
    751.5×
  109. 109ŌzuKumamoto, Japan
    751.5×
  110. 109MifuneKumamoto, Japan
    751.5×
  111. 109DěčínÚstí nad Labem Region, Czechia
    751.5×
  112. 112SteyrUpper Austria, Austria
    751.5×
  113. 113Quezon Citylow-cost sensorsNational Capital Region, Philippines
    751.5×
  114. 113BratislavaBratislava Region, Slovakia
    751.5×
  115. 115KumamotoKumamoto, Japan
    751.5×
  116. 115QuinteroValparaiso, Chile
    751.5×
  117. 115AricaArica y Parinacota Region, Chile
    751.5×
  118. 118MiyazakiMiyazaki, Japan
    741.4×
  119. 118ŽideniceSouth Moravian, Czechia
    741.4×
  120. 120MatsuyamaEhime, Japan
    741.4×
  121. 120KelheimBavaria, Germany
    741.4×
  122. 120KadaňÚstí nad Labem Region, Czechia
    741.4×
  123. 120SalamancaGuanajuato, Mexico
    741.4×
  124. 124Ulu BedokSingapore
    741.4×
  125. 124San Pedro de la PazBiobio, Chile
    741.4×
  126. 126MödlingLower Austria, Austria
    741.4×
  127. 126NeuenhagenBrandenburg, Germany
    741.4×
  128. 126BerlinState of Berlin, Germany
    741.4×
  129. 129NurembergBavaria, Germany
    741.4×
  130. 129TurinPiedmont, Italy
    741.4×
  131. 129Carsonlow-cost sensorsCalifornia, United States
    741.4×
  132. 132UsukiOita, Japan
    741.4×
  133. 132ViennaVienna, Austria
    741.4×
  134. 132České BudějoviceSouth Bohemian Region, Czechia
    741.4×
  135. 132CuricóMaule Region, Chile
    741.4×
  136. 136Kan’onjichōKagawa, Japan
    731.4×
  137. 136KladnoCentral Bohemia, Czechia
    731.4×
  138. 136ConcepciónBiobio, Chile
    731.4×
  139. 136BakersfieldCalifornia, United States
    731.4×
  140. 136MercedCalifornia, United States
    731.4×
  141. 136KotōKumamoto, Japan
    731.4×
  142. 142Almatylow-cost sensorsAlmaty, Kazakhstan
    731.4×
  143. 142ChillánÑuble, Chile
    731.4×
  144. 142VisaliaCalifornia, United States
    731.4×
  145. 145KurashikiOkayama, Japan
    731.4×
  146. 145SaijōEhime, Japan
    731.4×
  147. 145CauquenesMaule Region, Chile
    731.4×
  148. 148TrnavaTrnava Region, Slovakia
    731.4×
  149. 148Alto HospicioTarapacá, Chile
    731.4×
  150. 150KobayashiMiyazaki, Japan
    731.4×
  151. 150KleinmachnowBrandenburg, Germany
    731.4×
  152. 150CoquimboCoquimbo Region, Chile
    731.4×
  153. 150ChiguayanteBiobio, Chile
    731.4×
  154. 154PraguePrague, Czechia
    721.4×
  155. 155NiihamaEhime, Japan
    721.4×
  156. 155ChikuseiIbaraki, Japan
    721.4×
  157. 157GionHiroshima, Japan
    721.4×
  158. 157Ústí nad LabemÚstí nad Labem Region, Czechia
    721.4×
  159. 157Mladá BoleslavCentral Bohemia, Czechia
    721.4×
  160. 157BolzanoTrentino-Alto Adige, Italy
    721.4×
  161. 157AntofagastaAntofagasta, Chile
    721.4×
  162. 157ClovisCalifornia, United States
    721.4×
  163. 157Lomitalow-cost sensorsCalifornia, United States
    721.4×
  164. 157ShūnanYamaguchi, Japan
    721.4×
  165. 165YamagaKumamoto, Japan
    721.4×
  166. 165SōjaOkayama, Japan
    721.4×
  167. 165KureHiroshima, Japan
    721.4×
  168. 165PécsBaranya, Hungary
    721.4×
  169. 165LiberecLiberec Region, Czechia
    721.4×
  170. 165Hawthornelow-cost sensorsCalifornia, United States
    721.4×
  171. 171KazoSaitama, Japan
    721.3×
  172. 171Ang Mo Kio New TownSingapore
    721.3×
  173. 171MaderaCalifornia, United States
    721.3×
  174. 174TsuyamaOkayama, Japan
    711.3×
  175. 175TsukumiuraOita, Japan
    711.3×
  176. 175TamanoOkayama, Japan
    711.3×
  177. 175Viña del MarValparaiso, Chile
    711.3×
  178. 175Puerto MonttLos Lagos Region, Chile
    711.3×
  179. 175FontanaCalifornia, United States
    711.3×
  180. 175BizenOkayama, Japan
    711.3×
  181. 181MantecaCalifornia, United States
    711.3×
  182. 181Torrancelow-cost sensorsCalifornia, United States
    711.3×
  183. 181KunisakiOita, Japan
    711.3×
  184. 184OkayamaOkayama, Japan
    711.3×
  185. 184MarugameKagawa, Japan
    711.3×
  186. 186BambergBavaria, Germany
    711.3×
  187. 186KirishimaKagoshima, Japan
    711.3×
  188. 186HigashihiroshimaHiroshima, Japan
    711.3×
  189. 189IwakuniYamaguchi, Japan
    701.3×
  190. 189BrnoSouth Moravian, Czechia
    701.3×
  191. 189BuzenFukuoka, Japan
    701.3×
  192. 192SenicaTrnava Region, Slovakia
    701.3×
  193. 193AnsbachBavaria, Germany
    701.3×
  194. 194Kampalalow-cost sensorsCentral Region, Uganda
    701.3×
  195. 194DunaújvárosFejér, Hungary
    701.3×
  196. 194Karlova VesBratislava Region, Slovakia
    701.3×
  197. 194MostÚstí nad Labem Region, Czechia
    701.3×
  198. 194Chula VistaCalifornia, United States
    701.3×
  199. 199TamanaKumamoto, Japan
    701.3×
  200. 199HitoyoshiKumamoto, Japan
    701.3×

Top 200 of 1,735 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 19, 2023, smogrank.com/history/2023-10-19 (accessed 2 Oct 2026).

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