SmogRank / History / September 8, 2023

Most polluted cities on September 8, 2023

1,901 cities ranked by their average PM2.5 over the day; the worst was Piedras Negras, Mexico, at 986.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 8, 2023. All episodes.

← Piedras Negras 986.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for September 8, 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. 1Piedras NegrasCoahuila, Mexico
    500+65.7×
  2. 2Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1756.0×
  3. 3BeijingBeijing, China
    1685.3×
  4. 4Lahorelow-cost sensorsPunjab, Pakistan
    1675.2×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1513.7×
  6. 6JakartaJakarta, Indonesia
    1513.7×
  7. 7CoyhaiqueAysén, Chile
    1503.7×
  8. 8Puerto VarasLos Lagos Region, Chile
    1443.5×
  9. 9AlexandriaAlexandria, Egypt
    1403.4×
  10. 10TalcahuanoBiobio, Chile
    1383.4×
  11. 11Addis AbabaAddis Ababa, Ethiopia
    1313.2×
  12. 12NacimientoBiobio, Chile
    1233.0×
  13. 13OsornoLos Lagos Region, Chile
    1233.0×
  14. 14KigaliKigali, Rwanda
    1222.9×
  15. 15San CarlosÑuble, Chile
    1192.9×
  16. 16Clacton-on-SeaEngland, United Kingdom
    1172.8×
  17. 17ChillánÑuble, Chile
    1112.6×
  18. 18MexicaliBaja California, Mexico
    1102.6×
  19. 19Puerto AysénAysén, Chile
    1092.6×
  20. 20NairobiNairobi County, Kenya
    1092.6×
  21. 20Canvey IslandEngland, United Kingdom
    1092.6×
  22. 22Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1082.6×
  23. 23SalorTashkent Region, Uzbekistan
    1072.5×
  24. 24JeddahMecca Region, Saudi Arabia
    1052.5×
  25. 24HanoiHanoi, Vietnam
    1052.5×
  26. 26Puerto MonttLos Lagos Region, Chile
    1042.5×
  27. 27PlymouthEngland, United Kingdom
    1042.4×
  28. 28SaltashEngland, United Kingdom
    1032.4×
  29. 29San Pedro de la PazBiobio, Chile
    992.3×
  30. 30DębicaSubcarpathia, Poland
    982.3×
  31. 31Grand IslandNebraska, United States
    972.3×
  32. 32BamakoBamako, Mali
    962.2×
  33. 33WichitaKansas, United States
    962.2×
  34. 34ShenyangLiaoning, China
    942.2×
  35. 35DushanbeDushanbe, Tajikistan
    942.1×
  36. 35NottinghamEngland, United Kingdom
    942.1×
  37. 35RoseburgOregon, United States
    942.1×
  38. 38DerbyKansas, United States
    942.1×
  39. 39CauquenesMaule Region, Chile
    932.1×
  40. 40Dún LaoghaireLeinster, Ireland
    932.1×
  41. 41Dhakalow-cost sensorsDhaka Division, Bangladesh
    922.1×
  42. 42HernandoMississippi, United States
    922.1×
  43. 43RancaguaO'Higgins Region, Chile
    922.1×
  44. 44La UniónLos Ríos Region, Chile
    912.0×
  45. 45ŚwinoujścieWest Pomerania, Poland
    912.0×
  46. 45Santa Anita - Los FicusLima region, Peru
    912.0×
  47. 47LinaresMaule Region, Chile
    912.0×
  48. 48ChiguayanteBiobio, Chile
    902.0×
  49. 49Little RockArkansas, United States
    902.0×
  50. 50DunkirkHauts-de-France, France
    902.0×
  51. 51SpekeEngland, United Kingdom
    902.0×
  52. 52DagenhamEngland, United Kingdom
    892.0×
  53. 52TopekaKansas, United States
    892.0×
  54. 54BartlettTennessee, United States
    871.9×
  55. 55BanbridgeNorthern Ireland, United Kingdom
    861.9×
  56. 56KadaňÚstí nad Labem Region, Czechia
    861.9×
  57. 56WatertownSouth Dakota, United States
    861.9×
  58. 58AntananarivoAnalamanga, Madagascar
    861.9×
  59. 59HualquiBiobio, Chile
    861.8×
  60. 60CuranilahueBiobio, Chile
    851.8×
  61. 60TlaquepaqueJalisco, Mexico
    851.8×
  62. 60Lexingtonlow-cost sensorsMassachusetts, United States
    851.8×
  63. 63ConcepciónBiobio, Chile
    851.8×
  64. 64Ponca CityOklahoma, United States
    851.8×
  65. 64AberdeenSouth Dakota, United States
    851.8×
  66. 66Los ÁngelesBiobio, Chile
    851.8×
  67. 67DublinLeinster, Ireland
    851.8×
  68. 68San Salvador TizatlalliMéxico, Mexico
    841.8×
  69. 69Quezon Citylow-cost sensorsNational Capital Region, Philippines
    841.8×
  70. 70LimaLima Province, Peru
    841.8×
  71. 71KoksijdeFlanders, Belgium
    841.8×
  72. 72Kansas CityKansas, United States
    831.8×
  73. 73BelfastNorthern Ireland, United Kingdom
    831.8×
  74. 74KrakówLesser Poland, Poland
    831.8×
  75. 75OlatheKansas, United States
    821.7×
  76. 76BexleyEngland, United Kingdom
    821.7×
  77. 77BirminghamAlabama, United States
    821.7×
  78. 78SantiagoSantiago Metropolitan, Chile
    821.7×
  79. 78LibertyMissouri, United States
    821.7×
  80. 80Jastrzębie ZdrójSilesia, Poland
    811.7×
  81. 81RzeszówSubcarpathia, Poland
    811.7×
  82. 82PristinaPristina, Kosovo
    811.7×
  83. 82West MemphisArkansas, United States
    811.7×
  84. 84CuricóMaule Region, Chile
    801.7×
  85. 85RengoO'Higgins Region, Chile
    801.7×
  86. 86StabroekFlanders, Belgium
    801.6×
  87. 87SheffieldEngland, United Kingdom
    801.6×
  88. 88LotaBiobio, Chile
    791.6×
  89. 89MaldegemFlanders, Belgium
    791.6×
  90. 89TolucaMéxico, Mexico
    791.6×
  91. 89CholulaPuebla, Mexico
    791.6×
  92. 89BrookingsSouth Dakota, United States
    791.6×
  93. 93LiverpoolEngland, United Kingdom
    791.6×
  94. 93AnconaThe Marches, Italy
    791.6×
  95. 93Puente AltoSantiago Metropolitan, Chile
    791.6×
  96. 96BarnsleyEngland, United Kingdom
    781.6×
  97. 97NorwichEngland, United Kingdom
    781.6×
  98. 97TemucoAraucania, Chile
    781.6×
  99. 97West FargoNorth Dakota, United States
    781.6×
  100. 100Gómez PalacioDurango, Mexico
    781.6×
  101. 101Fort McMurrayAlberta, Canada
    781.6×
  102. 102QuinteroValparaiso, Chile
    771.5×
  103. 103Prince AlbertSaskatchewan, Canada
    771.5×
  104. 104Manchesterlow-cost sensorsEngland, United Kingdom
    771.5×
  105. 104CuernavacaMorelos, Mexico
    771.5×
  106. 104SpringdaleArkansas, United States
    771.5×
  107. 104Sioux FallsSouth Dakota, United States
    771.5×
  108. 108XonacatlánMéxico, Mexico
    761.5×
  109. 108Saint JosephMissouri, United States
    761.5×
  110. 110RoeselareFlanders, Belgium
    761.5×
  111. 111SarajevoFederation of B&H, Bosnia and Herzegovina
    761.5×
  112. 111Villa Poeta José Gálvez BarrenecheaLima region, Peru
    761.5×
  113. 113ToméBiobio, Chile
    761.5×
  114. 114BitolaBitola, North Macedonia
    751.5×
  115. 115TalcaMaule Region, Chile
    751.5×
  116. 115JacksonMississippi, United States
    751.5×
  117. 117OmahaNebraska, United States
    751.5×
  118. 118Kingston upon HullEngland, United Kingdom
    751.5×
  119. 119Stoke-on-TrentEngland, United Kingdom
    741.4×
  120. 119ZwijndrechtFlanders, Belgium
    741.4×
  121. 119San Luis PotosíSan Luis Potosí, Mexico
    741.4×
  122. 119BellevueNebraska, United States
    741.4×
  123. 123PrzemyślSubcarpathia, Poland
    741.4×
  124. 123CopiapóAtacama, Chile
    741.4×
  125. 125LeedsEngland, United Kingdom
    741.4×
  126. 126Karachilow-cost sensorsSindh, Pakistan
    741.4×
  127. 126BeverenFlanders, Belgium
    741.4×
  128. 126KaliszGreater Poland, Poland
    741.4×
  129. 129RacibórzSilesia, Poland
    731.4×
  130. 129TalaganteSantiago Metropolitan, Chile
    731.4×
  131. 131KatowiceSilesia, Poland
    731.4×
  132. 131CoronelBiobio, Chile
    731.4×
  133. 133JenksOklahoma, United States
    731.4×
  134. 134GuangzhouGuangdong, China
    731.4×
  135. 135MielecSubcarpathia, Poland
    731.4×
  136. 136NaplesCampania, Italy
    721.4×
  137. 137CanterburyEngland, United Kingdom
    721.4×
  138. 137Birminghamlow-cost sensorsEngland, United Kingdom
    721.4×
  139. 139EvergemFlanders, Belgium
    721.4×
  140. 139MadridMadrid, Spain
    721.4×
  141. 139ZapopanJalisco, Mexico
    721.4×
  142. 139EdmontonAlberta, Canada
    721.4×
  143. 143GraysEngland, United Kingdom
    721.4×
  144. 143TocopillaAntofagasta, Chile
    721.4×
  145. 145YorkEngland, United Kingdom
    721.3×
  146. 145PrestonEngland, United Kingdom
    721.3×
  147. 145IzegemFlanders, Belgium
    721.3×
  148. 145RadomskoŁódź Voivodeship, Poland
    721.3×
  149. 145QuillotaValparaiso, Chile
    721.3×
  150. 145CelayaGuanajuato, Mexico
    721.3×
  151. 145TulsaOklahoma, United States
    721.3×
  152. 145ReginaSaskatchewan, Canada
    721.3×
  153. 153KapellenFlanders, Belgium
    711.3×
  154. 153La SerenaCoquimbo Region, Chile
    711.3×
  155. 155KrosnoSubcarpathia, Poland
    711.3×
  156. 155San Francisco De BorjaLima region, Peru
    711.3×
  157. 157MóstolesMadrid, Spain
    711.3×
  158. 158IrlamEngland, United Kingdom
    711.3×
  159. 158RoubaixHauts-de-France, France
    711.3×
  160. 158BrestBrittany, France
    711.3×
  161. 158TrnavaTrnava Region, Slovakia
    711.3×
  162. 158ToruńKujawsko-Pomorskie, Poland
    711.3×
  163. 158BydgoszczKujawsko-Pomorskie, Poland
    711.3×
  164. 158AntofagastaAntofagasta, Chile
    711.3×
  165. 165ThessaloníkiCentral Macedonia, Greece
    711.3×
  166. 165WiganEngland, United Kingdom
    711.3×
  167. 167JesiThe Marches, Italy
    701.3×
  168. 168ChesterfieldEngland, United Kingdom
    701.3×
  169. 168LilleHauts-de-France, France
    701.3×
  170. 168ŁaskŁódź Voivodeship, Poland
    701.3×
  171. 171WarsawMazovia, Poland
    701.3×
  172. 171MiddlesbroughEngland, United Kingdom
    701.3×
  173. 171MenenFlanders, Belgium
    701.3×
  174. 171ConcónValparaiso, Chile
    701.3×
  175. 175AntwerpFlanders, Belgium
    701.3×
  176. 176ChennaiTamil Nadu, India
    701.3×
  177. 176KościanGreater Poland, Poland
    701.3×
  178. 176Kędzierzyn-KoźleOpole Voivodeship, Poland
    701.3×
  179. 179LincolnNebraska, United States
    691.3×
  180. 180WaregemFlanders, Belgium
    691.3×
  181. 180Gorzów WielkopolskiLubusz, Poland
    691.3×
  182. 182LondonEngland, United Kingdom
    691.3×
  183. 182Falconara MarittimaThe Marches, Italy
    691.3×
  184. 184Kuala LumpurKuala Lumpur, Malaysia
    691.2×
  185. 184WarringtonEngland, United Kingdom
    691.2×
  186. 184Sainte-Geneviève-des-BoisÎle-de-France, France
    691.2×
  187. 184ParisÎle-de-France, France
    691.2×
  188. 184OstravaMoravian-Silesian Region, Czechia
    691.2×
  189. 184Victoria de DurangoDurango, Mexico
    691.2×
  190. 184PortlandMaine, United States
    691.2×
  191. 191DelhiDelhi, India
    691.2×
  192. 191HavířovMoravian-Silesian Region, Czechia
    691.2×
  193. 193AricaArica y Parinacota Region, Chile
    681.2×
  194. 193HueytownAlabama, United States
    681.2×
  195. 195CardiffWales, United Kingdom
    681.2×
  196. 195OpoleOpole Voivodeship, Poland
    681.2×
  197. 195San Andrés TuxtlaVeracruz, Mexico
    681.2×
  198. 195Kansas CityMissouri, United States
    681.2×
  199. 195JacksonTennessee, United States
    681.2×
  200. 200LindauBavaria, Germany
    681.2×

Top 200 of 1,901 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 8, 2023, smogrank.com/history/2023-09-08 (accessed 2 Oct 2026).

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