SmogRank / History / October 22, 2023

Most polluted cities on October 22, 2023

1,672 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 168.0 µg/m³. Each city's own local calendar day.

← Lahore 168.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for October 22, 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
    24311.2×
  2. 2DelhiDelhi, India
    2129.1×
  3. 3DushanbeDushanbe, Tajikistan
    1917.5×
  4. 4N'DjamenaN’Djaména, Chad
    1695.4×
  5. 5MumbaiMaharashtra, India
    1655.0×
  6. 6Dhakalow-cost sensorsDhaka Division, Bangladesh
    1624.7×
  7. 7CairoCairo, Egypt
    1544.0×
  8. 8HyderabadTelangana, India
    1543.9×
  9. 9KolkataWest Bengal, India
    1473.6×
  10. 10JakartaJakarta, Indonesia
    1423.5×
  11. 11Puente AltoSantiago Metropolitan, Chile
    1383.4×
  12. 12ManamaManama, Bahrain
    1243.0×
  13. 13HanoiHanoi, Vietnam
    1172.8×
  14. 14Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1172.8×
  15. 15SantiagoSantiago Metropolitan, Chile
    1082.6×
  16. 16HualpénBiobio, Chile
    1072.5×
  17. 17Ulan BatorUlaanbaatar, Mongolia
    1062.5×
  18. 18AlgiersAlgiers, Algeria
    992.3×
  19. 19SalorTashkent Region, Uzbekistan
    962.2×
  20. 20Puerto VarasLos Lagos Region, Chile
    962.2×
  21. 21RancaguaO'Higgins Region, Chile
    952.2×
  22. 22CoronelBiobio, Chile
    932.1×
  23. 23PristinaPristina, Kosovo
    922.1×
  24. 24LotaBiobio, Chile
    922.1×
  25. 25ChiguayanteBiobio, Chile
    922.1×
  26. 26ToméBiobio, Chile
    902.0×
  27. 27Karachilow-cost sensorsSindh, Pakistan
    892.0×
  28. 28ShenyangLiaoning, China
    881.9×
  29. 29CoyhaiqueAysén, Chile
    871.9×
  30. 30Kathmandulow-cost sensorsBagmati Province, Nepal
    841.8×
  31. 31HualquiBiobio, Chile
    841.8×
  32. 32Tha BoNong Khai, Thailand
    841.8×
  33. 33San Pedro de la PazBiobio, Chile
    841.8×
  34. 34Abujalow-cost sensorsFCT, Nigeria
    821.7×
  35. 35TalcahuanoBiobio, Chile
    811.7×
  36. 36RengoO'Higgins Region, Chile
    801.7×
  37. 37Ulu BedokSingapore
    801.7×
  38. 38BeijingBeijing, China
    801.6×
  39. 38CuranilahueBiobio, Chile
    801.6×
  40. 40ConcepciónBiobio, Chile
    801.6×
  41. 41Samut SakhonSamut Sakhon, Thailand
    791.6×
  42. 42TalaganteSantiago Metropolitan, Chile
    781.6×
  43. 43GuangzhouGuangdong, China
    771.5×
  44. 44Kampalalow-cost sensorsCentral Region, Uganda
    761.5×
  45. 45QuillotaValparaiso, Chile
    761.5×
  46. 46QuinteroValparaiso, Chile
    761.5×
  47. 47ValdiviaLos Ríos Region, Chile
    751.5×
  48. 48BrawleyCalifornia, United States
    741.4×
  49. 49BitolaBitola, North Macedonia
    741.4×
  50. 50AntananarivoAnalamanga, Madagascar
    741.4×
  51. 50La UniónLos Ríos Region, Chile
    741.4×
  52. 52TocopillaAntofagasta, Chile
    721.4×
  53. 53Nong KhaemBangkok, Thailand
    721.4×
  54. 53AricaArica y Parinacota Region, Chile
    721.4×
  55. 55AntofagastaAntofagasta, Chile
    711.3×
  56. 56Almatylow-cost sensorsAlmaty, Kazakhstan
    711.3×
  57. 57Puerto AysénAysén, Chile
    711.3×
  58. 58NacimientoBiobio, Chile
    701.3×
  59. 58CelayaGuanajuato, Mexico
    701.3×
  60. 60Ang Mo Kio New TownSingapore
    701.3×
  61. 61NairobiNairobi County, Kenya
    701.3×
  62. 61TalcaMaule Region, Chile
    701.3×
  63. 61ConcónValparaiso, Chile
    701.3×
  64. 61CauquenesMaule Region, Chile
    701.3×
  65. 65TemucoAraucania, Chile
    691.3×
  66. 65Spokane ValleyWashington, United States
    691.3×
  67. 67ChillánÑuble, Chile
    691.2×
  68. 68San CarlosÑuble, Chile
    691.2×
  69. 69Queenstown Estatelow-cost sensorsSingapore
    691.2×
  70. 69GulfportMississippi, United States
    691.2×
  71. 69AltamontOregon, United States
    691.2×
  72. 72BangkokBangkok, Thailand
    681.2×
  73. 73Addis AbabaAddis Ababa, Ethiopia
    681.2×
  74. 73CopiapóAtacama, Chile
    681.2×
  75. 75Viña del MarValparaiso, Chile
    681.2×
  76. 75CoquimboCoquimbo Region, Chile
    681.2×
  77. 77Bang Bo DistrictSamut Prakan, Thailand
    681.2×
  78. 77PascagoulaMississippi, United States
    681.2×
  79. 79RuseRuse, Bulgaria
    681.2×
  80. 79SalamancaGuanajuato, Mexico
    681.2×
  81. 81Los ÁngelesBiobio, Chile
    671.2×
  82. 81La SerenaCoquimbo Region, Chile
    671.2×
  83. 83BucharestBucharest, Romania
    671.2×
  84. 83ShreveportLouisiana, United States
    671.2×
  85. 85ThessaloníkiCentral Macedonia, Greece
    671.2×
  86. 86CalamaAntofagasta, Chile
    671.2×
  87. 86Alto HospicioTarapacá, Chile
    671.2×
  88. 88QuilpuéValparaiso, Chile
    661.1×
  89. 89KavadarciKavadarci, North Macedonia
    641.1×
  90. 90TetovoTetovo, North Macedonia
    641.1×
  91. 91Quezon Citylow-cost sensorsNational Capital Region, Philippines
    641.1×
  92. 92ColumbusGeorgia, United States
    641.1×
  93. 93ColomboWestern Province, Sri Lanka
    641.1×
  94. 93Puerto MonttLos Lagos Region, Chile
    641.1×
  95. 93HattiesburgMississippi, United States
    641.1×
  96. 96Samut PrakanSamut Prakan, Thailand
    631.0×
  97. 97PátraWest Greece, Greece
    631.0×
  98. 98East RidgeTennessee, United States
    631.0×
  99. 99BakuBaki, Azerbaijan
    621.0×
  100. 99BirminghamAlabama, United States
    621.0×
  101. 99AlbanyGeorgia, United States
    621.0×
  102. 102DěčínÚstí nad Labem Region, Czechia
    621.0×
  103. 103JacksonMississippi, United States
    621.0×
  104. 103TexarkanaTexas, United States
    621.0×
  105. 105KochaniKochani, North Macedonia
    611.0×
  106. 105Khlong LuangPathum Thani, Thailand
    611.0×
  107. 105GlendaleArizona, United States
    611.0×
  108. 108La Línea de la ConcepciónAndalusia, Spain
    611.0×
  109. 108ChalmetteLouisiana, United States
    611.0×
  110. 110AsprópyrgosAttica, Greece
    611.0×
  111. 111PardubicePardubice Region, Czechia
    611.0×
  112. 112DuncanBritish Columbia, Canada
    600.9×
  113. 113Nakhon PathomNakhon Pathom, Thailand
    600.9×
  114. 113San Luis de la PazGuanajuato, Mexico
    600.9×
  115. 113CourtenayBritish Columbia, Canada
    600.9×
  116. 116OpavaMoravian-Silesian Region, Czechia
    600.9×
  117. 116Baton RougeLouisiana, United States
    600.9×
  118. 118SkopjeGrad Skopje, North Macedonia
    600.9×
  119. 118LewistonIdaho, United States
    600.9×
  120. 120Little RockArkansas, United States
    590.9×
  121. 121Red DeerAlberta, Canada
    590.9×
  122. 122BogotáBogota D.C., Colombia
    590.9×
  123. 123VigoGalicia, Spain
    590.9×
  124. 123YumaArizona, United States
    590.9×
  125. 125JeddahMecca Region, Saudi Arabia
    580.9×
  126. 125IaşiIași County, Romania
    580.9×
  127. 125SunnysideWashington, United States
    580.9×
  128. 128Asunciónlow-cost sensorsAsuncion, Paraguay
    580.9×
  129. 128Rio RanchoNew Mexico, United States
    580.9×
  130. 130AthensAttica, Greece
    580.9×
  131. 130Mueang NonthaburiNonthaburi, Thailand
    580.9×
  132. 130AlessandriaPiedmont, Italy
    580.9×
  133. 130DallasTexas, United States
    580.9×
  134. 134VelesVeles, North Macedonia
    580.9×
  135. 134Phra PradaengSamut Prakan, Thailand
    580.9×
  136. 134NogalesSonora, Mexico
    580.9×
  137. 137El CentroCalifornia, United States
    580.8×
  138. 137Port AlberniBritish Columbia, Canada
    580.8×
  139. 139Phenix CityAlabama, United States
    570.8×
  140. 140BizenOkayama, Japan
    570.8×
  141. 141LiberecLiberec Region, Czechia
    570.8×
  142. 141FontanaCalifornia, United States
    570.8×
  143. 143San RoqueAndalusia, Spain
    570.8×
  144. 143IzegemFlanders, Belgium
    570.8×
  145. 145Salmon CreekWashington, United States
    560.8×
  146. 146AcharnésAttica, Greece
    560.8×
  147. 146JacksonvilleFlorida, United States
    560.8×
  148. 146Ponte Vedra BeachFlorida, United States
    560.8×
  149. 146AnchorageAlaska, United States
    560.8×
  150. 150CraiovaDolj, Romania
    560.8×
  151. 150Ferry PassFlorida, United States
    560.8×
  152. 150ValdostaGeorgia, United States
    560.8×
  153. 153YangonYangon, Myanmar
    560.8×
  154. 153CentraliaWashington, United States
    560.8×
  155. 153MidwayFlorida, United States
    560.8×
  156. 156KhalándrionAttica, Greece
    560.8×
  157. 156Cluj-NapocaCluj County, Romania
    560.8×
  158. 156NišCentral Serbia, Serbia
    560.8×
  159. 156Coconut CreekFlorida, United States
    560.8×
  160. 156ReginaSaskatchewan, Canada
    560.8×
  161. 161KennerLouisiana, United States
    550.8×
  162. 162OcalaFlorida, United States
    550.8×
  163. 162ValricoFlorida, United States
    550.8×
  164. 162BrunswickGeorgia, United States
    550.8×
  165. 165EdmontonAlberta, Canada
    550.7×
  166. 166PylaíaCentral Macedonia, Greece
    550.7×
  167. 167MiyakonojōMiyazaki, Japan
    550.7×
  168. 167Bonita SpringsFlorida, United States
    550.7×
  169. 169RoveretoTrentino-Alto Adige, Italy
    540.7×
  170. 169Deerfield BeachFlorida, United States
    540.7×
  171. 169IndioCalifornia, United States
    540.7×
  172. 172Fort LauderdaleFlorida, United States
    540.7×
  173. 173AuburnWashington, United States
    540.7×
  174. 174KasaokaOkayama, Japan
    540.7×
  175. 174BerlinState of Berlin, Germany
    540.7×
  176. 174RedmondOregon, United States
    540.7×
  177. 177Fort-de-FranceMartinique, Martinique
    540.7×
  178. 177WellingtonFlorida, United States
    540.7×
  179. 179AstanaAstana, Kazakhstan
    530.7×
  180. 179Columbia CityWashington, United States
    530.7×
  181. 181SōjaOkayama, Japan
    530.7×
  182. 181ConroeTexas, United States
    530.7×
  183. 181ShorelineWashington, United States
    530.7×
  184. 184MoscowIdaho, United States
    530.7×
  185. 184RoseburgOregon, United States
    530.7×
  186. 186IlindenIlinden, North Macedonia
    530.7×
  187. 186MurciaMurcia, Spain
    530.7×
  188. 186HueytownAlabama, United States
    530.7×
  189. 186MontgomeryAlabama, United States
    530.7×
  190. 186New OrleansLouisiana, United States
    530.7×
  191. 186TempeArizona, United States
    530.7×
  192. 192TamanaKumamoto, Japan
    530.7×
  193. 192SandachōHyōgo, Japan
    530.7×
  194. 192Sainte-Geneviève-des-BoisÎle-de-France, France
    530.7×
  195. 192Ciudad JuárezChihuahua, Mexico
    530.7×
  196. 192AlbuquerqueNew Mexico, United States
    530.7×
  197. 197KurashikiOkayama, Japan
    520.7×
  198. 197São PauloSão Paulo, Brazil
    520.7×
  199. 197PrichardAlabama, United States
    520.7×
  200. 197Great FallsMontana, United States
    520.7×

Top 200 of 1,672 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 22, 2023, smogrank.com/history/2023-10-22 (accessed 2 Oct 2026).

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