SmogRank / History / September 7, 2023

Most polluted cities on September 7, 2023

1,833 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 98.8 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 7, 2023. All episodes.

← Coyhaique 98.8 µg/m³ 90 µg/m³15 WHO 24-hour guideline
Every city ranked for September 7, 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. 1CoyhaiqueAysén, Chile
    1816.6×
  2. 2TopekaKansas, United States
    1634.8×
  3. 3Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1604.5×
  4. 4LinaresMaule Region, Chile
    1564.2×
  5. 5BeijingBeijing, China
    1554.1×
  6. 6Lahorelow-cost sensorsPunjab, Pakistan
    1554.0×
  7. 7Grand IslandNebraska, United States
    1544.0×
  8. 8Kansas CityKansas, United States
    1523.8×
  9. 9OlatheKansas, United States
    1513.7×
  10. 10Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1393.4×
  11. 11LincolnNebraska, United States
    1363.3×
  12. 12AlexandriaAlexandria, Egypt
    1363.3×
  13. 13Addis AbabaAddis Ababa, Ethiopia
    1353.3×
  14. 14JakartaJakarta, Indonesia
    1343.3×
  15. 15WichitaKansas, United States
    1323.2×
  16. 16LibertyMissouri, United States
    1273.1×
  17. 17KigaliKigali, Rwanda
    1263.0×
  18. 18Fort McMurrayAlberta, Canada
    1243.0×
  19. 19DerbyKansas, United States
    1233.0×
  20. 20Saint JosephMissouri, United States
    1212.9×
  21. 21Kansas CityMissouri, United States
    1212.9×
  22. 22HanoiHanoi, Vietnam
    1192.8×
  23. 23RaymoreMissouri, United States
    1152.8×
  24. 24ReginaSaskatchewan, Canada
    1142.7×
  25. 25OmahaNebraska, United States
    1122.7×
  26. 26BellevueNebraska, United States
    1122.7×
  27. 27DartfordEngland, United Kingdom
    1082.6×
  28. 28Victoria de DurangoDurango, Mexico
    1072.5×
  29. 29MexicaliBaja California, Mexico
    1072.5×
  30. 30AntananarivoAnalamanga, Madagascar
    1052.5×
  31. 31NairobiNairobi County, Kenya
    1042.4×
  32. 32Canvey IslandEngland, United Kingdom
    1022.4×
  33. 33JenksOklahoma, United States
    1002.4×
  34. 34TulsaOklahoma, United States
    992.3×
  35. 35BexleyEngland, United Kingdom
    962.2×
  36. 36HualquiBiobio, Chile
    952.2×
  37. 37DagenhamEngland, United Kingdom
    952.2×
  38. 38GraysEngland, United Kingdom
    952.2×
  39. 39Prince AlbertSaskatchewan, Canada
    942.2×
  40. 40West FargoNorth Dakota, United States
    942.1×
  41. 41DushanbeDushanbe, Tajikistan
    932.1×
  42. 42Ponca CityOklahoma, United States
    932.1×
  43. 43Clacton-on-SeaEngland, United Kingdom
    932.1×
  44. 44LondonEngland, United Kingdom
    932.1×
  45. 45NacimientoBiobio, Chile
    932.1×
  46. 46CuranilahueBiobio, Chile
    922.1×
  47. 47PortlandMaine, United States
    922.1×
  48. 48Sioux FallsSouth Dakota, United States
    912.0×
  49. 49Puerto AysénAysén, Chile
    912.0×
  50. 50Puerto VarasLos Lagos Region, Chile
    892.0×
  51. 51Rapid CitySouth Dakota, United States
    892.0×
  52. 52SalorTashkent Region, Uzbekistan
    881.9×
  53. 53RengoO'Higgins Region, Chile
    881.9×
  54. 54RancaguaO'Higgins Region, Chile
    871.9×
  55. 55AberdeenSouth Dakota, United States
    861.9×
  56. 56JeddahMecca Region, Saudi Arabia
    851.8×
  57. 57DunkirkHauts-de-France, France
    851.8×
  58. 58DelhiDelhi, India
    851.8×
  59. 58Lexingtonlow-cost sensorsMassachusetts, United States
    851.8×
  60. 60GyőrGyőr-Moson-Sopron, Hungary
    851.8×
  61. 60CuricóMaule Region, Chile
    851.8×
  62. 62East Saint LouisIllinois, United States
    841.8×
  63. 63HernandoMississippi, United States
    841.8×
  64. 64CanterburyEngland, United Kingdom
    831.8×
  65. 64XonacatlánMéxico, Mexico
    831.8×
  66. 66PristinaPristina, Kosovo
    831.8×
  67. 67BartlettTennessee, United States
    831.7×
  68. 68BrandonManitoba, Canada
    821.7×
  69. 69PylaíaCentral Macedonia, Greece
    821.7×
  70. 69Dhakalow-cost sensorsDhaka Division, Bangladesh
    821.7×
  71. 71OsornoLos Lagos Region, Chile
    821.7×
  72. 71BrookingsSouth Dakota, United States
    821.7×
  73. 73Puerto MonttLos Lagos Region, Chile
    811.7×
  74. 74EdmontonAlberta, Canada
    811.7×
  75. 75KoksijdeFlanders, Belgium
    811.7×
  76. 76DyersburgTennessee, United States
    801.7×
  77. 77Santa Anita - Los FicusLima region, Peru
    801.6×
  78. 78CauquenesMaule Region, Chile
    801.6×
  79. 79LeedsEngland, United Kingdom
    801.6×
  80. 79HayesEngland, United Kingdom
    801.6×
  81. 81WatertownSouth Dakota, United States
    791.6×
  82. 82BitolaBitola, North Macedonia
    791.6×
  83. 83Wan ChaiWan Chai, Hong Kong
    791.6×
  84. 83LimaLima Province, Peru
    791.6×
  85. 83Gómez PalacioDurango, Mexico
    791.6×
  86. 86Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    791.6×
  87. 86SpringdaleArkansas, United States
    791.6×
  88. 88BamakoBamako, Mali
    791.6×
  89. 89N'DjamenaN’Djaména, Chad
    781.6×
  90. 90CholulaPuebla, Mexico
    781.6×
  91. 91West MemphisArkansas, United States
    781.6×
  92. 92La Línea de la ConcepciónAndalusia, Spain
    781.6×
  93. 92ChillánÑuble, Chile
    781.6×
  94. 92SpringfieldMissouri, United States
    781.6×
  95. 95BakuBaki, Azerbaijan
    771.6×
  96. 95SarajevoFederation of B&H, Bosnia and Herzegovina
    771.6×
  97. 97EvansvilleIndiana, United States
    771.5×
  98. 98ShenyangLiaoning, China
    771.5×
  99. 98CuernavacaMorelos, Mexico
    771.5×
  100. 100TalcahuanoBiobio, Chile
    771.5×
  101. 101AugustaMaine, United States
    771.5×
  102. 101SaskatoonSaskatchewan, Canada
    771.5×
  103. 103San CarlosÑuble, Chile
    761.5×
  104. 103QuillotaValparaiso, Chile
    761.5×
  105. 105TalcaMaule Region, Chile
    761.5×
  106. 105JacksonTennessee, United States
    761.5×
  107. 107JasperIndiana, United States
    761.5×
  108. 108La UniónLos Ríos Region, Chile
    761.5×
  109. 109CardiffWales, United Kingdom
    751.5×
  110. 110SpekeEngland, United Kingdom
    751.5×
  111. 111MikuniFukui, Japan
    751.5×
  112. 111BarnsleyEngland, United Kingdom
    751.5×
  113. 113Samut SakhonSamut Sakhon, Thailand
    751.5×
  114. 114Quezon Citylow-cost sensorsNational Capital Region, Philippines
    741.4×
  115. 114SaguenayQuebec, Canada
    741.4×
  116. 116AnkenyIowa, United States
    741.4×
  117. 116BangorMaine, United States
    741.4×
  118. 116Swift CurrentSaskatchewan, Canada
    741.4×
  119. 119ChiguayanteBiobio, Chile
    741.4×
  120. 119EdmondOklahoma, United States
    741.4×
  121. 119Des MoinesIowa, United States
    741.4×
  122. 122SantiagoSantiago Metropolitan, Chile
    741.4×
  123. 122CoronelBiobio, Chile
    741.4×
  124. 124Karachilow-cost sensorsSindh, Pakistan
    741.4×
  125. 125TalaganteSantiago Metropolitan, Chile
    741.4×
  126. 126TolucaMéxico, Mexico
    731.4×
  127. 126NashvilleTennessee, United States
    731.4×
  128. 128SheffieldEngland, United Kingdom
    731.4×
  129. 128NottinghamEngland, United Kingdom
    731.4×
  130. 130San RoqueAndalusia, Spain
    731.4×
  131. 130TemucoAraucania, Chile
    731.4×
  132. 132LewistonMaine, United States
    731.4×
  133. 133JaénAndalusia, Spain
    731.4×
  134. 133JeffersonvilleIndiana, United States
    731.4×
  135. 135University CityMissouri, United States
    721.4×
  136. 136MóstolesMadrid, Spain
    721.4×
  137. 137CelayaGuanajuato, Mexico
    721.4×
  138. 137BloomingtonIndiana, United States
    721.4×
  139. 139Los ÁngelesBiobio, Chile
    721.4×
  140. 139ArnoldMissouri, United States
    721.4×
  141. 141LouisvilleKentucky, United States
    721.3×
  142. 141San Salvador TizatlalliMéxico, Mexico
    721.3×
  143. 143MooreOklahoma, United States
    711.3×
  144. 144JeffersontownKentucky, United States
    711.3×
  145. 145RennesBrittany, France
    711.3×
  146. 145St. LouisMissouri, United States
    711.3×
  147. 145San Pedro de la PazBiobio, Chile
    711.3×
  148. 148Saint MatthewsKentucky, United States
    711.3×
  149. 149Oklahoma CityOklahoma, United States
    711.3×
  150. 150TocopillaAntofagasta, Chile
    701.3×
  151. 150QuinteroValparaiso, Chile
    701.3×
  152. 152VannesBrittany, France
    701.3×
  153. 153QuébecQuebec, Canada
    701.3×
  154. 153L'Ancienne-LoretteQuebec, Canada
    701.3×
  155. 155PrestonEngland, United Kingdom
    691.3×
  156. 155AndoverEngland, United Kingdom
    691.3×
  157. 155CaenNormandy, France
    691.3×
  158. 155AnconaThe Marches, Italy
    691.3×
  159. 159Kampalalow-cost sensorsCentral Region, Uganda
    691.3×
  160. 159Manchesterlow-cost sensorsEngland, United Kingdom
    691.3×
  161. 161RoeselareFlanders, Belgium
    691.3×
  162. 161Valley StationKentucky, United States
    691.3×
  163. 161Toms RiverNew Jersey, United States
    691.3×
  164. 164SevillaAndalusia, Spain
    691.2×
  165. 164BrightonEngland, United Kingdom
    691.2×
  166. 164BrestBrittany, France
    691.2×
  167. 164CopiapóAtacama, Chile
    691.2×
  168. 164AntofagastaAntofagasta, Chile
    691.2×
  169. 169ThessaloníkiCentral Macedonia, Greece
    691.2×
  170. 169BailénAndalusia, Spain
    691.2×
  171. 169Briton FerryWales, United Kingdom
    691.2×
  172. 172HyderabadTelangana, India
    681.2×
  173. 172Frýdek-MístekMoravian-Silesian Region, Czechia
    681.2×
  174. 172ToméBiobio, Chile
    681.2×
  175. 172Puente AltoSantiago Metropolitan, Chile
    681.2×
  176. 172LotaBiobio, Chile
    681.2×
  177. 172AricaArica y Parinacota Region, Chile
    681.2×
  178. 172SalamancaGuanajuato, Mexico
    681.2×
  179. 172PortsmouthNew Hampshire, United States
    681.2×
  180. 180ChennaiTamil Nadu, India
    681.2×
  181. 180Ciudad NezahualcoyotlMéxico, Mexico
    681.2×
  182. 180Granite CityIllinois, United States
    681.2×
  183. 183GreenvilleNorth Carolina, United States
    681.2×
  184. 184RaleighNorth Carolina, United States
    681.2×
  185. 185Tsuen WanTsuen Wan, Hong Kong
    681.2×
  186. 185MaldegemFlanders, Belgium
    681.2×
  187. 187OlomoucOlomouc Region, Czechia
    671.2×
  188. 187Český TěšínMoravian-Silesian Region, Czechia
    671.2×
  189. 187TijuanaBaja California, Mexico
    671.2×
  190. 187Santiago de QuerétaroQuerétaro, Mexico
    671.2×
  191. 191San FernandoAndalusia, Spain
    671.2×
  192. 191DecaturIllinois, United States
    671.2×
  193. 191ColumbusIndiana, United States
    671.2×
  194. 194SpringfieldIllinois, United States
    671.2×
  195. 195MostÚstí nad Labem Region, Czechia
    671.2×
  196. 195La SerenaCoquimbo Region, Chile
    671.2×
  197. 197ReadingEngland, United Kingdom
    661.2×
  198. 197RoubaixHauts-de-France, France
    661.2×
  199. 197Collado-VillalbaMadrid, Spain
    661.2×
  200. 200MiddlesbroughEngland, United Kingdom
    661.2×

Top 200 of 1,833 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

Use this board

SmogRank, most polluted cities, PM2.5, September 7, 2023, smogrank.com/history/2023-09-07 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.