SmogRank / History / October 25, 2023

Most polluted cities on October 25, 2023

1,767 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 169.0 µg/m³. Each city's own local calendar day.

← Lahore 169.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for October 25, 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
    24411.3×
  2. 2DelhiDelhi, India
    2018.4×
  3. 2N'DjamenaN’Djaména, Chad
    2018.4×
  4. 4BeijingBeijing, China
    1766.1×
  5. 5MumbaiMaharashtra, India
    1745.9×
  6. 6Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1705.5×
  7. 7HanoiHanoi, Vietnam
    1665.1×
  8. 8ShenyangLiaoning, China
    1574.2×
  9. 9CairoCairo, Egypt
    1564.1×
  10. 10GuangzhouGuangdong, China
    1544.0×
  11. 11Islamabadlow-cost sensorsIslamabad, Pakistan
    1513.7×
  12. 12HyderabadTelangana, India
    1343.3×
  13. 13KolkataWest Bengal, India
    1233.0×
  14. 14Dhakalow-cost sensorsDhaka Division, Bangladesh
    1142.7×
  15. 15JakartaJakarta, Indonesia
    1092.6×
  16. 16PristinaPristina, Kosovo
    1082.6×
  17. 17Karachilow-cost sensorsSindh, Pakistan
    1072.5×
  18. 18JeddahMecca Region, Saudi Arabia
    1032.4×
  19. 19Abujalow-cost sensorsFCT, Nigeria
    992.3×
  20. 20TetovoTetovo, North Macedonia
    982.3×
  21. 21Samut SakhonSamut Sakhon, Thailand
    972.2×
  22. 22Kampalalow-cost sensorsCentral Region, Uganda
    952.2×
  23. 23Ulan BatorUlaanbaatar, Mongolia
    942.2×
  24. 24HualpénBiobio, Chile
    922.1×
  25. 25Şabāḩ as SālimMubārak al Kabīr, Kuwait
    912.0×
  26. 26DunaújvárosFejér, Hungary
    912.0×
  27. 27CoronelBiobio, Chile
    912.0×
  28. 28ŻabbarĦaż-Żabbar, Malta
    912.0×
  29. 29SliemaTas-Sliema, Malta
    892.0×
  30. 30SalorTashkent Region, Uzbekistan
    892.0×
  31. 31Nong KhaemBangkok, Thailand
    881.9×
  32. 32CelayaGuanajuato, Mexico
    881.9×
  33. 33BangkokBangkok, Thailand
    861.9×
  34. 34SalamancaGuanajuato, Mexico
    851.8×
  35. 35ColomboWestern Province, Sri Lanka
    831.8×
  36. 36KochaniKochani, North Macedonia
    831.7×
  37. 37QuillotaValparaiso, Chile
    831.7×
  38. 38DushanbeDushanbe, Tajikistan
    811.7×
  39. 39San CarlosÑuble, Chile
    811.7×
  40. 40QuinteroValparaiso, Chile
    801.6×
  41. 41AthensAttica, Greece
    801.6×
  42. 42BitolaBitola, North Macedonia
    791.6×
  43. 43NišCentral Serbia, Serbia
    781.6×
  44. 44Silao de la VictoriaGuanajuato, Mexico
    781.6×
  45. 45AntananarivoAnalamanga, Madagascar
    771.5×
  46. 45Mong KokYau Tsim Mong District, Hong Kong
    771.5×
  47. 47SarajevoFederation of B&H, Bosnia and Herzegovina
    771.5×
  48. 48Tuen MunTuen Mun, Hong Kong
    771.5×
  49. 49Phra PradaengSamut Prakan, Thailand
    761.5×
  50. 50ThessaloníkiCentral Macedonia, Greece
    761.5×
  51. 51Tin Shui WaiYuen Long, Hong Kong
    761.5×
  52. 51NacimientoBiobio, Chile
    761.5×
  53. 53AcharnésAttica, Greece
    751.5×
  54. 53TocopillaAntofagasta, Chile
    751.5×
  55. 53San Luis de la PazGuanajuato, Mexico
    751.5×
  56. 56DenverColorado, United States
    751.5×
  57. 57Addis AbabaAddis Ababa, Ethiopia
    751.5×
  58. 57Mueang NonthaburiNonthaburi, Thailand
    751.5×
  59. 59Candler-McAfeeGeorgia, United States
    741.4×
  60. 60Khlong LuangPathum Thani, Thailand
    741.4×
  61. 61SkopjeGrad Skopje, North Macedonia
    731.4×
  62. 61Almatylow-cost sensorsAlmaty, Kazakhstan
    731.4×
  63. 61León de los AldamaGuanajuato, Mexico
    731.4×
  64. 64KavadarciKavadarci, North Macedonia
    731.4×
  65. 65YangonYangon, Myanmar
    721.4×
  66. 65Sham Shui PoSham Shui Po District, Hong Kong
    721.4×
  67. 65GuanajuatoGuanajuato, Mexico
    721.4×
  68. 68PátraWest Greece, Greece
    721.4×
  69. 68Viña del MarValparaiso, Chile
    721.4×
  70. 70YawataKyoto, Japan
    721.3×
  71. 71Fort CollinsColorado, United States
    711.3×
  72. 72KhalándrionAttica, Greece
    711.3×
  73. 72IlindenIlinden, North Macedonia
    711.3×
  74. 72FanlingNorth District, Hong Kong
    711.3×
  75. 75Tsuen WanTsuen Wan, Hong Kong
    711.3×
  76. 75Kwai ChungKwai Tsing District, Hong Kong
    711.3×
  77. 75TalcahuanoBiobio, Chile
    711.3×
  78. 78Kathmandulow-cost sensorsBagmati Province, Nepal
    701.3×
  79. 78Kashihara-shiNara, Japan
    701.3×
  80. 80AshgabatAshgabat, Turkmenistan
    701.3×
  81. 80San Pedro de la PazBiobio, Chile
    701.3×
  82. 82MiskolcBorsod-Abaúj-Zemplén, Hungary
    701.3×
  83. 83VelesVeles, North Macedonia
    701.3×
  84. 83Nakhon PathomNakhon Pathom, Thailand
    701.3×
  85. 85ManamaManama, Bahrain
    691.3×
  86. 86Sau Mau PingKwun Tong District, Hong Kong
    691.3×
  87. 86IrapuatoGuanajuato, Mexico
    691.3×
  88. 86ClintonIowa, United States
    691.3×
  89. 86GreeleyColorado, United States
    691.3×
  90. 90Nara-shiNara, Japan
    691.3×
  91. 91Samut PrakanSamut Prakan, Thailand
    691.2×
  92. 91NabariMie, Japan
    691.2×
  93. 93PiraeusAttica, Greece
    691.2×
  94. 93BakuBaki, Azerbaijan
    691.2×
  95. 93Tai PoTai Po, Hong Kong
    691.2×
  96. 93Kakogawachō-honmachiHyōgo, Japan
    691.2×
  97. 93ConcónValparaiso, Chile
    691.2×
  98. 98KashiwaraNara, Japan
    681.2×
  99. 99Tha BoNong Khai, Thailand
    681.2×
  100. 100GyōdaSaitama, Japan
    681.2×
  101. 100AmagasakiHyōgo, Japan
    681.2×
  102. 102MostaIl-Mosta, Malta
    671.2×
  103. 103Sha TinSha Tin, Hong Kong
    671.2×
  104. 104Bang Bo DistrictSamut Prakan, Thailand
    671.2×
  105. 105NagaiYamagata, Japan
    661.2×
  106. 106Haskovolow-cost sensorsHaskovo, Bulgaria
    661.1×
  107. 106AbasoloGuanajuato, Mexico
    661.1×
  108. 106DavenportIowa, United States
    661.1×
  109. 109CalamaAntofagasta, Chile
    661.1×
  110. 110HigashinozoeHyōgo, Japan
    661.1×
  111. 110IgaMie, Japan
    661.1×
  112. 112KazoSaitama, Japan
    661.1×
  113. 113SaikūMie, Japan
    651.1×
  114. 114UjiKyoto, Japan
    651.1×
  115. 114NorthbrookIllinois, United States
    651.1×
  116. 114HanfordCalifornia, United States
    651.1×
  117. 117OnoHyōgo, Japan
    651.1×
  118. 117SugaiKyoto, Japan
    651.1×
  119. 119RuseRuse, Bulgaria
    651.1×
  120. 120IwadeWakayama, Japan
    641.1×
  121. 121Kan’onjichōKagawa, Japan
    641.1×
  122. 121RockfordIllinois, United States
    641.1×
  123. 123SandachōHyōgo, Japan
    641.1×
  124. 123IyoEhime, Japan
    641.1×
  125. 125Quezon Citylow-cost sensorsNational Capital Region, Philippines
    641.1×
  126. 125TaharaAichi, Japan
    641.1×
  127. 125MinatoWakayama, Japan
    641.1×
  128. 125AlessandriaPiedmont, Italy
    641.1×
  129. 125ThorntonColorado, United States
    641.1×
  130. 125NiizaSaitama, Japan
    641.1×
  131. 131AkashiHyōgo, Japan
    631.1×
  132. 131KumagayaSaitama, Japan
    631.1×
  133. 133ZentsujichóKagawa, Japan
    631.0×
  134. 133BirminghamAlabama, United States
    631.0×
  135. 135ChigasakiKanagawa, Japan
    631.0×
  136. 135CalexicoCalifornia, United States
    631.0×
  137. 137Cluj-NapocaCluj County, Romania
    631.0×
  138. 137KurashikiOkayama, Japan
    631.0×
  139. 137VictoriaCentral and Western, Hong Kong
    631.0×
  140. 137Bernau bei BerlinBrandenburg, Germany
    631.0×
  141. 137MatsusakaMie, Japan
    631.0×
  142. 142PylaíaCentral Macedonia, Greece
    631.0×
  143. 142NishinomiyaHyōgo, Japan
    631.0×
  144. 142IgusaSaitama, Japan
    631.0×
  145. 142TeltowBrandenburg, Germany
    631.0×
  146. 142AnchorageAlaska, United States
    631.0×
  147. 147KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    621.0×
  148. 147IseMie, Japan
    621.0×
  149. 147CharlotteNorth Carolina, United States
    621.0×
  150. 147BensalemPennsylvania, United States
    621.0×
  151. 147BizenOkayama, Japan
    621.0×
  152. 152MuscatineIowa, United States
    621.0×
  153. 153KameokaKyoto, Japan
    621.0×
  154. 153HanyūSaitama, Japan
    621.0×
  155. 153FresnoCalifornia, United States
    621.0×
  156. 156PrešovPrešov Region, Slovakia
    621.0×
  157. 156LongmontColorado, United States
    621.0×
  158. 156AsakuchiOkayama, Japan
    621.0×
  159. 159West MifflinPennsylvania, United States
    621.0×
  160. 159JōyōKyoto, Japan
    621.0×
  161. 159KaminomaAichi, Japan
    621.0×
  162. 162TsuyamaOkayama, Japan
    611.0×
  163. 162SuzukaMie, Japan
    611.0×
  164. 162IkedachōTokushima, Japan
    611.0×
  165. 162MilwaukeeWisconsin, United States
    611.0×
  166. 162ChikuseiIbaraki, Japan
    611.0×
  167. 167TamanoOkayama, Japan
    611.0×
  168. 167MolineIllinois, United States
    611.0×
  169. 167DetroitMichigan, United States
    611.0×
  170. 167WaukeshaWisconsin, United States
    611.0×
  171. 167BarrieOntario, Canada
    611.0×
  172. 167BrooklinOntario, Canada
    611.0×
  173. 167Higashi-MatsuyamaSaitama, Japan
    611.0×
  174. 174SusakiKochi, Japan
    611.0×
  175. 174SōjaOkayama, Japan
    611.0×
  176. 174KōnosuSaitama, Japan
    611.0×
  177. 174AgeoSaitama, Japan
    611.0×
  178. 174Valley StationKentucky, United States
    611.0×
  179. 174Iowa CityIowa, United States
    611.0×
  180. 180TakarazukaHyōgo, Japan
    611.0×
  181. 180KasaokaOkayama, Japan
    611.0×
  182. 180HimejiHyōgo, Japan
    611.0×
  183. 180Ulu BedokSingapore
    611.0×
  184. 180BaytownTexas, United States
    611.0×
  185. 180MimaTokushima, Japan
    611.0×
  186. 186BucharestBucharest, Romania
    611.0×
  187. 186Sakai-nakajimaGunma, Japan
    611.0×
  188. 186MenumaSaitama, Japan
    611.0×
  189. 186HōryūjiNara, Japan
    611.0×
  190. 186SaijōEhime, Japan
    611.0×
  191. 186TatsunoHyōgo, Japan
    611.0×
  192. 192TsuMie, Japan
    610.9×
  193. 192SanoTochigi, Japan
    610.9×
  194. 192KielSchleswig-Holstein, Germany
    610.9×
  195. 192SarniaOntario, Canada
    610.9×
  196. 196TatebayashiGunma, Japan
    600.9×
  197. 196BerlinState of Berlin, Germany
    600.9×
  198. 198NiihamaEhime, Japan
    600.9×
  199. 198KobeHyōgo, Japan
    600.9×
  200. 198KawaguchiSaitama, Japan
    600.9×

Top 200 of 1,767 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 25, 2023, smogrank.com/history/2023-10-25 (accessed 2 Oct 2026).

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