SmogRank / History / September 26, 2023

Most polluted cities on September 26, 2023

1,818 cities ranked by their average PM2.5 over the day; the worst was Żabbar, Malta, at 140.0 µg/m³. Each city's own local calendar day.

← Żabbar 140.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for September 26, 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. 1ŻabbarĦaż-Żabbar, Malta
    2159.3×
  2. 2Karachilow-cost sensorsSindh, Pakistan
    2078.8×
  3. 3CairoCairo, Egypt
    1695.4×
  4. 4DelhiDelhi, India
    1634.8×
  5. 5Lahorelow-cost sensorsPunjab, Pakistan
    1624.8×
  6. 6BeijingBeijing, China
    1604.6×
  7. 7Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1453.6×
  8. 8Dhakalow-cost sensorsDhaka Division, Bangladesh
    1423.5×
  9. 9Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1303.2×
  10. 10HanoiHanoi, Vietnam
    1182.8×
  11. 11JakartaJakarta, Indonesia
    1092.6×
  12. 12DushanbeDushanbe, Tajikistan
    1082.6×
  13. 13SalorTashkent Region, Uzbekistan
    1062.5×
  14. 14NogalesSonora, Mexico
    1032.4×
  15. 15NacimientoBiobio, Chile
    1022.4×
  16. 16Puerto VarasLos Lagos Region, Chile
    1002.3×
  17. 17MexicaliBaja California, Mexico
    982.3×
  18. 18Islamabadlow-cost sensorsIslamabad, Pakistan
    962.2×
  19. 19LimaLima Province, Peru
    952.2×
  20. 20Addis AbabaAddis Ababa, Ethiopia
    932.1×
  21. 21OsornoLos Lagos Region, Chile
    922.1×
  22. 22La UniónLos Ríos Region, Chile
    912.1×
  23. 23Ulu BedokSingapore
    912.0×
  24. 24NairobiNairobi County, Kenya
    892.0×
  25. 25SarajevoFederation of B&H, Bosnia and Herzegovina
    892.0×
  26. 26Santa Anita - Los FicusLima region, Peru
    881.9×
  27. 27Kampalalow-cost sensorsCentral Region, Uganda
    871.9×
  28. 28Ang Mo Kio New TownSingapore
    861.9×
  29. 29BirminghamAlabama, United States
    841.8×
  30. 30Puerto MonttLos Lagos Region, Chile
    821.7×
  31. 31JeddahMecca Region, Saudi Arabia
    811.7×
  32. 32CoronelBiobio, Chile
    811.7×
  33. 33GuangzhouGuangdong, China
    811.7×
  34. 34PristinaPristina, Kosovo
    811.7×
  35. 35Fort St. JohnBritish Columbia, Canada
    801.6×
  36. 36HyderabadTelangana, India
    791.6×
  37. 37CoyhaiqueAysén, Chile
    791.6×
  38. 38NagaiYamagata, Japan
    791.6×
  39. 38CauquenesMaule Region, Chile
    791.6×
  40. 40Mladá BoleslavCentral Bohemia, Czechia
    781.6×
  41. 41XonacatlánMéxico, Mexico
    771.6×
  42. 42San CarlosÑuble, Chile
    771.5×
  43. 43San Francisco TlalcilalcalpanMéxico, Mexico
    771.5×
  44. 44TemucoAraucania, Chile
    761.5×
  45. 44TalcahuanoBiobio, Chile
    761.5×
  46. 46CallaoCallao, Peru
    751.5×
  47. 47BamakoBamako, Mali
    751.5×
  48. 47CuranilahueBiobio, Chile
    751.5×
  49. 49CopiapóAtacama, Chile
    751.5×
  50. 49Villa Poeta José Gálvez BarrenecheaLima region, Peru
    751.5×
  51. 51Queenstown Estatelow-cost sensorsSingapore
    741.4×
  52. 52BensalemPennsylvania, United States
    741.4×
  53. 53GuadalajaraJalisco, Mexico
    731.4×
  54. 54HualquiBiobio, Chile
    731.4×
  55. 55TocopillaAntofagasta, Chile
    731.4×
  56. 56TijuanaBaja California, Mexico
    721.4×
  57. 57ConcepciónBiobio, Chile
    721.4×
  58. 57FontanaCalifornia, United States
    721.4×
  59. 59KolkataWest Bengal, India
    721.4×
  60. 59ValdiviaLos Ríos Region, Chile
    721.4×
  61. 61ToméBiobio, Chile
    721.4×
  62. 62QuillotaValparaiso, Chile
    721.3×
  63. 63BelgradeCentral Serbia, Serbia
    711.3×
  64. 64AntananarivoAnalamanga, Madagascar
    711.3×
  65. 64HueytownAlabama, United States
    711.3×
  66. 66N'DjamenaN’Djaména, Chad
    711.3×
  67. 67MostÚstí nad Labem Region, Czechia
    711.3×
  68. 68RiversideCalifornia, United States
    711.3×
  69. 69Kuala LumpurKuala Lumpur, Malaysia
    701.3×
  70. 70AsprópyrgosAttica, Greece
    701.3×
  71. 70BarrieOntario, Canada
    701.3×
  72. 72Little RockArkansas, United States
    701.3×
  73. 73ZnojmoSouth Moravian, Czechia
    701.3×
  74. 73ChillánÑuble, Chile
    701.3×
  75. 73Alto HospicioTarapacá, Chile
    701.3×
  76. 76BangkokBangkok, Thailand
    691.3×
  77. 76Puerto AysénAysén, Chile
    691.3×
  78. 78OstravaMoravian-Silesian Region, Czechia
    691.3×
  79. 78Jurupa ValleyCalifornia, United States
    691.3×
  80. 80AthensAttica, Greece
    691.3×
  81. 80Phra PradaengSamut Prakan, Thailand
    691.3×
  82. 80St. John'sNewfoundland and Labrador, Canada
    691.3×
  83. 83AricaArica y Parinacota Region, Chile
    691.2×
  84. 84DěčínÚstí nad Labem Region, Czechia
    691.2×
  85. 85Wan ChaiWan Chai, Hong Kong
    681.2×
  86. 85ZapopanJalisco, Mexico
    681.2×
  87. 85San Francisco De BorjaLima region, Peru
    681.2×
  88. 88Khlong LuangPathum Thani, Thailand
    681.2×
  89. 88NewmarketOntario, Canada
    681.2×
  90. 90Nong KhaemBangkok, Thailand
    681.2×
  91. 90TolucaMéxico, Mexico
    681.2×
  92. 92KhalándrionAttica, Greece
    681.2×
  93. 92CholulaPuebla, Mexico
    681.2×
  94. 94OpavaMoravian-Silesian Region, Czechia
    681.2×
  95. 94Los ÁngelesBiobio, Chile
    681.2×
  96. 96São PauloSão Paulo, Brazil
    671.2×
  97. 96SantiagoSantiago Metropolitan, Chile
    671.2×
  98. 98KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    671.2×
  99. 98DurangoBasque Country, Spain
    671.2×
  100. 100AcharnésAttica, Greece
    671.2×
  101. 100RuseRuse, Bulgaria
    671.2×
  102. 102Puente AltoSantiago Metropolitan, Chile
    671.2×
  103. 103CuricóMaule Region, Chile
    661.2×
  104. 104ŽideniceSouth Moravian, Czechia
    661.2×
  105. 104KladnoCentral Bohemia, Czechia
    661.2×
  106. 104AnconaThe Marches, Italy
    661.2×
  107. 104PeterboroughOntario, Canada
    661.2×
  108. 108AstanaAstana, Kazakhstan
    661.1×
  109. 109PřerovOlomouc Region, Czechia
    661.1×
  110. 110MiskolcBorsod-Abaúj-Zemplén, Hungary
    661.1×
  111. 110QuinteroValparaiso, Chile
    661.1×
  112. 110San Pedro de la PazBiobio, Chile
    661.1×
  113. 110San Salvador TizatlalliMéxico, Mexico
    661.1×
  114. 114PiraeusAttica, Greece
    651.1×
  115. 114ChiguayanteBiobio, Chile
    651.1×
  116. 114CalamaAntofagasta, Chile
    651.1×
  117. 114OakvilleOntario, Canada
    651.1×
  118. 118Samut SakhonSamut Sakhon, Thailand
    651.1×
  119. 118WoodlandsSingapore
    651.1×
  120. 118ShenyangLiaoning, China
    651.1×
  121. 121TeltowBrandenburg, Germany
    651.1×
  122. 121TrnavaTrnava Region, Slovakia
    651.1×
  123. 121CoquimboCoquimbo Region, Chile
    651.1×
  124. 121SalamancaGuanajuato, Mexico
    651.1×
  125. 121Greater SudburyOntario, Canada
    651.1×
  126. 126SninaPrešov Region, Slovakia
    651.1×
  127. 126RancaguaO'Higgins Region, Chile
    651.1×
  128. 126Mount PearlNewfoundland and Labrador, Canada
    651.1×
  129. 129TetovoTetovo, North Macedonia
    641.1×
  130. 129Gasteiz / VitoriaBasque Country, Spain
    641.1×
  131. 129Banja LukaSrpska, Bosnia and Herzegovina
    641.1×
  132. 129La SerenaCoquimbo Region, Chile
    641.1×
  133. 133Kathmandulow-cost sensorsBagmati Province, Nepal
    641.1×
  134. 134MumbaiMaharashtra, India
    641.1×
  135. 134HuelvaAndalusia, Spain
    641.1×
  136. 134KadaňÚstí nad Labem Region, Czechia
    641.1×
  137. 134ConcónValparaiso, Chile
    641.1×
  138. 134BrooklinOntario, Canada
    641.1×
  139. 139Santa CatarinaNuevo León, Mexico
    641.1×
  140. 140BerlinState of Berlin, Germany
    641.1×
  141. 140Hradec KrálovéHradec Králové Region, Czechia
    641.1×
  142. 140AnaheimCalifornia, United States
    641.1×
  143. 143TalaganteSantiago Metropolitan, Chile
    631.1×
  144. 143ScrantonPennsylvania, United States
    631.1×
  145. 143Chula VistaCalifornia, United States
    631.1×
  146. 146Ciudad JuárezChihuahua, Mexico
    631.0×
  147. 146Ciudad ApodacaNuevo León, Mexico
    631.0×
  148. 148TorontoOntario, Canada
    631.0×
  149. 149BitolaBitola, North Macedonia
    631.0×
  150. 149LotaBiobio, Chile
    631.0×
  151. 149SaltilloCoahuila, Mexico
    631.0×
  152. 152BakuBaki, Azerbaijan
    631.0×
  153. 152PardubicePardubice Region, Czechia
    631.0×
  154. 152AlessandriaPiedmont, Italy
    631.0×
  155. 155ColomboWestern Province, Sri Lanka
    621.0×
  156. 155OlomoucOlomouc Region, Czechia
    621.0×
  157. 157MiltonOntario, Canada
    621.0×
  158. 157North BayOntario, Canada
    621.0×
  159. 159GrazStyria, Austria
    621.0×
  160. 159MunichBavaria, Germany
    621.0×
  161. 159PhiladelphiaPennsylvania, United States
    621.0×
  162. 159HamiltonOntario, Canada
    621.0×
  163. 163IaşiIași County, Romania
    621.0×
  164. 163MartinŽilina Region, Slovakia
    621.0×
  165. 163TalcaMaule Region, Chile
    621.0×
  166. 163BramptonOntario, Canada
    621.0×
  167. 163Fort McMurrayAlberta, Canada
    621.0×
  168. 168TepliceÚstí nad Labem Region, Czechia
    621.0×
  169. 168RengoO'Higgins Region, Chile
    621.0×
  170. 170AlbanyNew York, United States
    611.0×
  171. 171RochesterNew York, United States
    611.0×
  172. 171San DiegoCalifornia, United States
    611.0×
  173. 171MississaugaOntario, Canada
    611.0×
  174. 174PrešovPrešov Region, Slovakia
    611.0×
  175. 174Samut PrakanSamut Prakan, Thailand
    611.0×
  176. 174Bernau bei BerlinBrandenburg, Germany
    611.0×
  177. 174ColumbusGeorgia, United States
    611.0×
  178. 178New BrunswickNew Jersey, United States
    611.0×
  179. 178Los AngelesCalifornia, United States
    611.0×
  180. 180Mueang NonthaburiNonthaburi, Thailand
    611.0×
  181. 180KasaokaOkayama, Japan
    611.0×
  182. 180BethlehemPennsylvania, United States
    611.0×
  183. 180BellevilleOntario, Canada
    611.0×
  184. 180Sault Ste. MarieOntario, Canada
    611.0×
  185. 180WaterdownOntario, Canada
    611.0×
  186. 186Ústí nad LabemÚstí nad Labem Region, Czechia
    610.9×
  187. 186ElizabethNew Jersey, United States
    610.9×
  188. 186CalexicoCalifornia, United States
    610.9×
  189. 189NišCentral Serbia, Serbia
    600.9×
  190. 189PraguePrague, Czechia
    600.9×
  191. 189CelayaGuanajuato, Mexico
    600.9×
  192. 189El CajonCalifornia, United States
    600.9×
  193. 189GlendoraCalifornia, United States
    600.9×
  194. 194ToyamaToyama, Japan
    600.9×
  195. 194SandachōHyōgo, Japan
    600.9×
  196. 194NeuenhagenBrandenburg, Germany
    600.9×
  197. 194TrussvilleAlabama, United States
    600.9×
  198. 198PassauBavaria, Germany
    600.9×
  199. 198SenicaTrnava Region, Slovakia
    600.9×
  200. 198Tepeji del Río de OcampoHidalgo, Mexico
    600.9×

Top 200 of 1,818 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, September 26, 2023, smogrank.com/history/2023-09-26 (accessed 2 Oct 2026).

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