SmogRank / History / October 27, 2023

Most polluted cities on October 27, 2023

1,873 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 199.0 µg/m³. Each city's own local calendar day.

← Lahore 199.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for October 27, 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
    27413.3×
  2. 2N'DjamenaN’Djaména, Chad
    2149.3×
  3. 3DelhiDelhi, India
    2048.6×
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    2028.5×
  5. 5HanoiHanoi, Vietnam
    1766.1×
  6. 6KolkataWest Bengal, India
    1695.4×
  7. 7CairoCairo, Egypt
    1675.2×
  8. 8Dhakalow-cost sensorsDhaka Division, Bangladesh
    1634.8×
  9. 9Islamabadlow-cost sensorsIslamabad, Pakistan
    1523.8×
  10. 10MumbaiMaharashtra, India
    1443.5×
  11. 11HyderabadTelangana, India
    1393.4×
  12. 12ShenyangLiaoning, China
    1303.1×
  13. 13GuangzhouGuangdong, China
    1192.9×
  14. 14Ulan BatorUlaanbaatar, Mongolia
    1142.7×
  15. 15ŻabbarĦaż-Żabbar, Malta
    982.3×
  16. 16Karachilow-cost sensorsSindh, Pakistan
    972.3×
  17. 17BeijingBeijing, China
    962.2×
  18. 18JeddahMecca Region, Saudi Arabia
    962.2×
  19. 19BakuBaki, Azerbaijan
    962.2×
  20. 20Kampalalow-cost sensorsCentral Region, Uganda
    942.1×
  21. 21BadgerAlaska, United States
    932.1×
  22. 22AntananarivoAnalamanga, Madagascar
    922.1×
  23. 23Şabāḩ as SālimMubārak al Kabīr, Kuwait
    922.1×
  24. 24Abujalow-cost sensorsFCT, Nigeria
    922.1×
  25. 25ReddingCalifornia, United States
    871.9×
  26. 26AthensAttica, Greece
    871.9×
  27. 27DushanbeDushanbe, Tajikistan
    861.9×
  28. 28AshgabatAshgabat, Turkmenistan
    851.8×
  29. 29PiraeusAttica, Greece
    851.8×
  30. 30HualpénBiobio, Chile
    841.8×
  31. 31SalorTashkent Region, Uzbekistan
    821.7×
  32. 32AsprópyrgosAttica, Greece
    821.7×
  33. 33PristinaPristina, Kosovo
    811.7×
  34. 34BensalemPennsylvania, United States
    801.7×
  35. 35TocopillaAntofagasta, Chile
    791.6×
  36. 36ColomboWestern Province, Sri Lanka
    791.6×
  37. 37QuillotaValparaiso, Chile
    781.6×
  38. 38YawataKyoto, Japan
    771.6×
  39. 38ChicoCalifornia, United States
    771.6×
  40. 40Wan ChaiWan Chai, Hong Kong
    771.5×
  41. 41SalamancaGuanajuato, Mexico
    761.5×
  42. 42QuinteroValparaiso, Chile
    761.5×
  43. 43Tanushimarumachi-toyokiFukuoka, Japan
    761.5×
  44. 44AcharnésAttica, Greece
    751.5×
  45. 44SliemaTas-Sliema, Malta
    751.5×
  46. 46KhalándrionAttica, Greece
    741.4×
  47. 46CoronelBiobio, Chile
    741.4×
  48. 48San CarlosÑuble, Chile
    731.4×
  49. 49BizenOkayama, Japan
    721.4×
  50. 50NairobiNairobi County, Kenya
    721.4×
  51. 50NacimientoBiobio, Chile
    721.4×
  52. 52Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    721.3×
  53. 52Maebaru-chūōFukuoka, Japan
    721.3×
  54. 54ShimonosekiYamaguchi, Japan
    711.3×
  55. 55TsushimaNagasaki, Japan
    711.3×
  56. 56Tha BoNong Khai, Thailand
    711.3×
  57. 56KogaFukuoka, Japan
    711.3×
  58. 58Viña del MarValparaiso, Chile
    701.3×
  59. 59OnodaYamaguchi, Japan
    691.3×
  60. 59KitakyushuFukuoka, Japan
    691.3×
  61. 61YamanashiYamanashi, Japan
    691.2×
  62. 62ConcónValparaiso, Chile
    691.2×
  63. 63KudamatsuYamaguchi, Japan
    681.2×
  64. 64UbeYamaguchi, Japan
    681.2×
  65. 65UjiKyoto, Japan
    681.2×
  66. 66AmagasakiHyōgo, Japan
    681.2×
  67. 66MineYamaguchi, Japan
    681.2×
  68. 66NantanKyoto, Japan
    681.2×
  69. 69NakatsuOita, Japan
    671.2×
  70. 70MiyakonojōMiyazaki, Japan
    671.2×
  71. 70New BrunswickNew Jersey, United States
    671.2×
  72. 70TrentonNew Jersey, United States
    671.2×
  73. 73KakegawaShizuoka, Japan
    671.2×
  74. 73FukuokaFukuoka, Japan
    671.2×
  75. 75NabariMie, Japan
    671.2×
  76. 75HikariYamaguchi, Japan
    671.2×
  77. 77ThessaloníkiCentral Macedonia, Greece
    671.2×
  78. 77KyotoKyoto, Japan
    671.2×
  79. 79Kathmandulow-cost sensorsBagmati Province, Nepal
    661.2×
  80. 79TsurusakiOita, Japan
    661.2×
  81. 79KazoSaitama, Japan
    661.2×
  82. 79NogalesSonora, Mexico
    661.2×
  83. 83TsuyamaOkayama, Japan
    661.2×
  84. 83TamanoOkayama, Japan
    661.2×
  85. 83KameyamaMie, Japan
    661.2×
  86. 83MostaIl-Mosta, Malta
    661.2×
  87. 87PátraWest Greece, Greece
    661.1×
  88. 87YangonYangon, Myanmar
    661.1×
  89. 87Tuen MunTuen Mun, Hong Kong
    661.1×
  90. 87Mong KokYau Tsim Mong District, Hong Kong
    661.1×
  91. 87MasudaShimane, Japan
    661.1×
  92. 87IwataShizuoka, Japan
    661.1×
  93. 87IgaMie, Japan
    661.1×
  94. 94TatebayashiGunma, Japan
    661.1×
  95. 94ElizabethNew Jersey, United States
    661.1×
  96. 94ItoshimaFukuoka, Japan
    661.1×
  97. 97Nara-shiNara, Japan
    661.1×
  98. 97Kakogawachō-honmachiHyōgo, Japan
    661.1×
  99. 97HanyūSaitama, Japan
    661.1×
  100. 97NagatoYamaguchi, Japan
    661.1×
  101. 97IyoEhime, Japan
    661.1×
  102. 97LancasterPennsylvania, United States
    661.1×
  103. 97UkihaFukuoka, Japan
    661.1×
  104. 104ChigasakiKanagawa, Japan
    661.1×
  105. 105KofuYamanashi, Japan
    651.1×
  106. 105SarajevoFederation of B&H, Bosnia and Herzegovina
    651.1×
  107. 107Addis AbabaAddis Ababa, Ethiopia
    651.1×
  108. 107TamanaKumamoto, Japan
    651.1×
  109. 107HigashinozoeHyōgo, Japan
    651.1×
  110. 107NōgataFukuoka, Japan
    651.1×
  111. 107Port AlberniBritish Columbia, Canada
    651.1×
  112. 112Tin Shui WaiYuen Long, Hong Kong
    651.1×
  113. 112YanaiYamaguchi, Japan
    651.1×
  114. 112Kan’onjichōKagawa, Japan
    651.1×
  115. 112FukuroiShizuoka, Japan
    651.1×
  116. 116KandaFukuoka, Japan
    651.1×
  117. 116AraoKumamoto, Japan
    651.1×
  118. 116ShūnanYamaguchi, Japan
    651.1×
  119. 119SkopjeGrad Skopje, North Macedonia
    651.1×
  120. 119TosuSaga, Japan
    651.1×
  121. 121SanoTochigi, Japan
    641.1×
  122. 121MatsuyamaEhime, Japan
    641.1×
  123. 121ParadiseCalifornia, United States
    641.1×
  124. 121YachiyoChiba, Japan
    641.1×
  125. 125GyōdaSaitama, Japan
    641.1×
  126. 125Swift CurrentSaskatchewan, Canada
    641.1×
  127. 127SuzukaMie, Japan
    641.1×
  128. 127SaikūMie, Japan
    641.1×
  129. 127FukuchiyamaKyoto, Japan
    641.1×
  130. 127New HavenConnecticut, United States
    641.1×
  131. 127Prince GeorgeBritish Columbia, Canada
    641.1×
  132. 127ReginaSaskatchewan, Canada
    641.1×
  133. 127Misato, SaitamaSaitama, Japan
    641.1×
  134. 134KureHiroshima, Japan
    641.1×
  135. 134Kashihara-shiNara, Japan
    641.1×
  136. 134FujiedaShizuoka, Japan
    641.1×
  137. 134FujiShizuoka, Japan
    641.1×
  138. 134NottinghamEngland, United Kingdom
    641.1×
  139. 139YokkaichiMie, Japan
    641.1×
  140. 139TsuMie, Japan
    641.1×
  141. 139TalcahuanoBiobio, Chile
    641.1×
  142. 139BridgeportConnecticut, United States
    641.1×
  143. 139WakasugiFukuoka, Japan
    641.1×
  144. 144YamagaKumamoto, Japan
    631.1×
  145. 144ŌtsuShiga, Japan
    631.1×
  146. 144ŌtaGunma, Japan
    631.1×
  147. 144AsahikawaHokkaido, Japan
    631.1×
  148. 144CalamaAntofagasta, Chile
    631.1×
  149. 144PhiladelphiaPennsylvania, United States
    631.1×
  150. 144ProvidenceRhode Island, United States
    631.1×
  151. 151YukuhashiFukuoka, Japan
    631.0×
  152. 151SendaiKagoshima, Japan
    631.0×
  153. 151BirminghamAlabama, United States
    631.0×
  154. 151WaterburyConnecticut, United States
    631.0×
  155. 151SusonoShizuoka, Japan
    631.0×
  156. 156KameokaKyoto, Japan
    631.0×
  157. 156LebanonPennsylvania, United States
    631.0×
  158. 156SugaiKyoto, Japan
    631.0×
  159. 156HigashigōSaga, Japan
    631.0×
  160. 160San Tung Chung HangIslands, Hong Kong
    631.0×
  161. 160ŌtakeHiroshima, Japan
    631.0×
  162. 160KurumeFukuoka, Japan
    631.0×
  163. 160KōtariKyoto, Japan
    631.0×
  164. 160GōtsuchōShimane, Japan
    631.0×
  165. 160FontanaCalifornia, United States
    631.0×
  166. 160San Pedro de la PazBiobio, Chile
    631.0×
  167. 160MunakataFukuoka, Japan
    631.0×
  168. 168Quezon Citylow-cost sensorsNational Capital Region, Philippines
    631.0×
  169. 168IseMie, Japan
    631.0×
  170. 168EugeneOregon, United States
    631.0×
  171. 168MatsusakaMie, Japan
    631.0×
  172. 172MenumaSaitama, Japan
    631.0×
  173. 172Lexingtonlow-cost sensorsMassachusetts, United States
    631.0×
  174. 174YoukaichiShiga, Japan
    621.0×
  175. 174YamaguchiYamaguchi, Japan
    621.0×
  176. 174OkayamaOkayama, Japan
    621.0×
  177. 174KurashikiOkayama, Japan
    621.0×
  178. 174KōnosuSaitama, Japan
    621.0×
  179. 174Fort LeeNew Jersey, United States
    621.0×
  180. 174New York CityNew York, United States
    621.0×
  181. 174InabeMie, Japan
    621.0×
  182. 174TatsunoHyōgo, Japan
    621.0×
  183. 174IkiNagasaki, Japan
    621.0×
  184. 184UtoKumamoto, Japan
    621.0×
  185. 184KasukabeSaitama, Japan
    621.0×
  186. 184SaijōEhime, Japan
    621.0×
  187. 184TeltowBrandenburg, Germany
    621.0×
  188. 184Spokane ValleyWashington, United States
    621.0×
  189. 184AnchorageAlaska, United States
    621.0×
  190. 184HigashihiroshimaHiroshima, Japan
    621.0×
  191. 191Uekimachi-mōnoKumamoto, Japan
    621.0×
  192. 191TakanabeMiyazaki, Japan
    621.0×
  193. 191SōkaSaitama, Japan
    621.0×
  194. 191KumamotoKumamoto, Japan
    621.0×
  195. 191KogaFukuoka, Japan
    621.0×
  196. 191IgusaSaitama, Japan
    621.0×
  197. 191HiratsukaKanagawa, Japan
    621.0×
  198. 191FukuyamaHiroshima, Japan
    621.0×
  199. 191AtamiShizuoka, Japan
    621.0×
  200. 191PortlandMaine, United States
    621.0×

Top 200 of 1,873 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 27, 2023, smogrank.com/history/2023-10-27 (accessed 2 Oct 2026).

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