SmogRank / History / August 7, 2023

Most polluted cities on August 7, 2023

1,804 cities ranked by their average PM2.5 over the day; the worst was Temuco, Chile, at 148.5 µg/m³. Each city's own local calendar day.

← Temuco 148.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 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. 1TemucoAraucania, Chile
    2249.9×
  2. 2BadgerAlaska, United States
    2239.9×
  3. 3NacimientoBiobio, Chile
    2209.6×
  4. 4FairbanksAlaska, United States
    2199.6×
  5. 5OsornoLos Lagos Region, Chile
    2159.3×
  6. 6Puerto MonttLos Lagos Region, Chile
    1897.3×
  7. 7CoyhaiqueAysén, Chile
    1816.6×
  8. 8La UniónLos Ríos Region, Chile
    1796.3×
  9. 9CalexicoCalifornia, United States
    1786.3×
  10. 10CuranilahueBiobio, Chile
    1766.1×
  11. 11Puerto VarasLos Lagos Region, Chile
    1745.9×
  12. 12Los ÁngelesBiobio, Chile
    1644.9×
  13. 13CoronelBiobio, Chile
    1614.6×
  14. 14Swift CurrentSaskatchewan, Canada
    1604.5×
  15. 15JakartaJakarta, Indonesia
    1594.5×
  16. 16TalcahuanoBiobio, Chile
    1554.1×
  17. 17ReginaSaskatchewan, Canada
    1544.0×
  18. 18ValdiviaLos Ríos Region, Chile
    1543.9×
  19. 19HualquiBiobio, Chile
    1523.8×
  20. 20Puerto AysénAysén, Chile
    1443.5×
  21. 21San CarlosÑuble, Chile
    1403.4×
  22. 22Dhakalow-cost sensorsDhaka Division, Bangladesh
    1373.4×
  23. 23LinaresMaule Region, Chile
    1373.3×
  24. 24CauquenesMaule Region, Chile
    1363.3×
  25. 25ChillánÑuble, Chile
    1303.2×
  26. 26Addis AbabaAddis Ababa, Ethiopia
    1263.1×
  27. 27TalcaMaule Region, Chile
    1263.0×
  28. 28ManamaManama, Bahrain
    1263.0×
  29. 29ToméBiobio, Chile
    1243.0×
  30. 30SantiagoSantiago Metropolitan, Chile
    1233.0×
  31. 31Lahorelow-cost sensorsPunjab, Pakistan
    1192.9×
  32. 32ConcepciónBiobio, Chile
    1172.8×
  33. 33RengoO'Higgins Region, Chile
    1172.8×
  34. 34Prince AlbertSaskatchewan, Canada
    1162.8×
  35. 35TalaganteSantiago Metropolitan, Chile
    1132.7×
  36. 36Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1132.7×
  37. 37KigaliKigali, Rwanda
    1122.7×
  38. 37CuricóMaule Region, Chile
    1122.7×
  39. 39Prince GeorgeBritish Columbia, Canada
    1102.6×
  40. 40RancaguaO'Higgins Region, Chile
    1102.6×
  41. 41Puente AltoSantiago Metropolitan, Chile
    1072.5×
  42. 42San Pedro de la PazBiobio, Chile
    1022.4×
  43. 43MexicaliBaja California, Mexico
    1012.4×
  44. 44Ciudad JuárezChihuahua, Mexico
    982.3×
  45. 45ChiguayanteBiobio, Chile
    982.3×
  46. 46SofiaSofia-Capital, Bulgaria
    942.2×
  47. 46DushanbeDushanbe, Tajikistan
    942.2×
  48. 48SocorroTexas, United States
    932.1×
  49. 49KolkataWest Bengal, India
    922.1×
  50. 50SaskatoonSaskatchewan, Canada
    922.1×
  51. 51CranbrookBritish Columbia, Canada
    912.0×
  52. 52Santa Anita - Los FicusLima region, Peru
    871.9×
  53. 53HuelvaAndalusia, Spain
    861.9×
  54. 54BrawleyCalifornia, United States
    841.8×
  55. 54EdmontonAlberta, Canada
    841.8×
  56. 56AugustaMaine, United States
    841.8×
  57. 57ChennaiTamil Nadu, India
    831.8×
  58. 58QuillotaValparaiso, Chile
    831.7×
  59. 59Ciudad ApodacaNuevo León, Mexico
    811.7×
  60. 60Victoria de DurangoDurango, Mexico
    801.7×
  61. 61Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    801.6×
  62. 61QuinteroValparaiso, Chile
    801.6×
  63. 63AntofagastaAntofagasta, Chile
    801.6×
  64. 64LotaBiobio, Chile
    791.6×
  65. 65Fort McMurrayAlberta, Canada
    791.6×
  66. 66Lexingtonlow-cost sensorsMassachusetts, United States
    781.6×
  67. 67LimaLima Province, Peru
    781.6×
  68. 68Karachilow-cost sensorsSindh, Pakistan
    781.6×
  69. 68BeijingBeijing, China
    781.6×
  70. 70PristinaPristina, Kosovo
    781.6×
  71. 71BamakoBamako, Mali
    771.5×
  72. 71XonacatlánMéxico, Mexico
    771.5×
  73. 71San Francisco TlalcilalcalpanMéxico, Mexico
    771.5×
  74. 74BakuBaki, Azerbaijan
    771.5×
  75. 75DelhiDelhi, India
    771.5×
  76. 76VernonBritish Columbia, Canada
    751.5×
  77. 77Alto HospicioTarapacá, Chile
    751.5×
  78. 77West FargoNorth Dakota, United States
    751.5×
  79. 79CoquimboCoquimbo Region, Chile
    741.4×
  80. 80Islamabadlow-cost sensorsIslamabad, Pakistan
    741.4×
  81. 80Inglewoodlow-cost sensorsCalifornia, United States
    741.4×
  82. 80KamloopsBritish Columbia, Canada
    741.4×
  83. 83AricaArica y Parinacota Region, Chile
    731.4×
  84. 84CopiapóAtacama, Chile
    731.4×
  85. 84Santa Monicalow-cost sensorsCalifornia, United States
    731.4×
  86. 86NorrtäljeStockholm, Sweden
    731.4×
  87. 87Santa CatarinaNuevo León, Mexico
    721.4×
  88. 88ConcónValparaiso, Chile
    721.4×
  89. 89TocopillaAntofagasta, Chile
    711.3×
  90. 89Los AngelesCalifornia, United States
    711.3×
  91. 91HanoiHanoi, Vietnam
    711.3×
  92. 91GuangzhouGuangdong, China
    711.3×
  93. 93Ciudad Benito JuárezNuevo León, Mexico
    711.3×
  94. 94LewistonMaine, United States
    701.3×
  95. 95BurnsvilleMinnesota, United States
    701.3×
  96. 95SherbrookeQuebec, Canada
    701.3×
  97. 97TolucaMéxico, Mexico
    701.3×
  98. 98HyderabadTelangana, India
    691.3×
  99. 98Viña del MarValparaiso, Chile
    691.3×
  100. 98PortlandMaine, United States
    691.3×
  101. 101Şabāḩ as SālimMubārak al Kabīr, Kuwait
    691.3×
  102. 101AntananarivoAnalamanga, Madagascar
    691.3×
  103. 103San Mateo AtencoMéxico, Mexico
    691.3×
  104. 103DrummondvilleQuebec, Canada
    691.3×
  105. 105Eau ClaireWisconsin, United States
    691.2×
  106. 106RochesterMinnesota, United States
    691.2×
  107. 106ShawiniganQuebec, Canada
    691.2×
  108. 108PueblaPuebla, Mexico
    691.2×
  109. 109Villa Poeta José Gálvez BarrenecheaLima region, Peru
    681.2×
  110. 109Grande PrairieAlberta, Canada
    681.2×
  111. 111SliemaTas-Sliema, Malta
    681.2×
  112. 111SarajevoFederation of B&H, Bosnia and Herzegovina
    681.2×
  113. 113Nong KhaemBangkok, Thailand
    681.2×
  114. 114Samut SakhonSamut Sakhon, Thailand
    681.2×
  115. 115La SerenaCoquimbo Region, Chile
    681.2×
  116. 115CalgaryAlberta, Canada
    681.2×
  117. 117Collado-VillalbaMadrid, Spain
    671.2×
  118. 117Saint PaulMinnesota, United States
    671.2×
  119. 117AberdeenSouth Dakota, United States
    671.2×
  120. 120CalamaAntofagasta, Chile
    671.2×
  121. 120MinneapolisMinnesota, United States
    671.2×
  122. 120Saint CloudMinnesota, United States
    671.2×
  123. 123ShakopeeMinnesota, United States
    671.2×
  124. 123AltamontOregon, United States
    671.2×
  125. 125Wan ChaiWan Chai, Hong Kong
    671.2×
  126. 125Tepeji del Río de OcampoHidalgo, Mexico
    671.2×
  127. 127Iowa CityIowa, United States
    671.2×
  128. 127Hawthornelow-cost sensorsCalifornia, United States
    671.2×
  129. 127San Salvador TizatlalliMéxico, Mexico
    671.2×
  130. 130LisbonLisbon, Portugal
    661.2×
  131. 130OttawaOntario, Canada
    661.2×
  132. 132Torrancelow-cost sensorsCalifornia, United States
    661.2×
  133. 132PentictonBritish Columbia, Canada
    661.2×
  134. 134El PasoTexas, United States
    661.1×
  135. 135El CentroCalifornia, United States
    651.1×
  136. 136BangorMaine, United States
    651.1×
  137. 136Apple ValleyMinnesota, United States
    651.1×
  138. 136Saint MichaelMinnesota, United States
    651.1×
  139. 136ElizabethNew Jersey, United States
    651.1×
  140. 136BurbankCalifornia, United States
    651.1×
  141. 141Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    651.1×
  142. 142TijuanaBaja California, Mexico
    641.1×
  143. 142AnkenyIowa, United States
    641.1×
  144. 144AmoraSetúbal, Portugal
    641.1×
  145. 144Jardines de la SillaNuevo León, Mexico
    641.1×
  146. 146WaterlooIowa, United States
    641.1×
  147. 146Carsonlow-cost sensorsCalifornia, United States
    641.1×
  148. 148WichitaKansas, United States
    641.1×
  149. 148MolineIllinois, United States
    641.1×
  150. 148KelownaBritish Columbia, Canada
    641.1×
  151. 148Red DeerAlberta, Canada
    641.1×
  152. 152La CrosseWisconsin, United States
    631.1×
  153. 153MonterreyNuevo León, Mexico
    631.0×
  154. 153St. AlbertAlberta, Canada
    631.0×
  155. 155MyyrmäkiUusimaa, Finland
    631.0×
  156. 155Rouyn-NorandaQuebec, Canada
    631.0×
  157. 157ColomboWestern Province, Sri Lanka
    631.0×
  158. 157ClintonIowa, United States
    631.0×
  159. 157DavenportIowa, United States
    631.0×
  160. 157ComptonCalifornia, United States
    631.0×
  161. 161SevillaAndalusia, Spain
    631.0×
  162. 161DerbyKansas, United States
    631.0×
  163. 161AnaheimCalifornia, United States
    631.0×
  164. 164Abujalow-cost sensorsFCT, Nigeria
    621.0×
  165. 164WatertownSouth Dakota, United States
    621.0×
  166. 166BangkokBangkok, Thailand
    621.0×
  167. 166Naucalpan de JuárezMéxico, Mexico
    621.0×
  168. 166Cadereyta JiménezNuevo León, Mexico
    621.0×
  169. 166HanfordCalifornia, United States
    621.0×
  170. 170Bang Bo DistrictSamut Prakan, Thailand
    621.0×
  171. 170Sherwood ParkAlberta, Canada
    621.0×
  172. 170AmamiKagoshima, Japan
    621.0×
  173. 173Ciudad NezahualcoyotlMéxico, Mexico
    621.0×
  174. 173WaterburyConnecticut, United States
    621.0×
  175. 173Chula VistaCalifornia, United States
    621.0×
  176. 176Kuala LumpurKuala Lumpur, Malaysia
    611.0×
  177. 176NagaiYamagata, Japan
    611.0×
  178. 176West MemphisArkansas, United States
    611.0×
  179. 176BostonMassachusetts, United States
    611.0×
  180. 180HelsinkiUusimaa, Finland
    611.0×
  181. 181Khlong LuangPathum Thani, Thailand
    611.0×
  182. 181MuscatineIowa, United States
    611.0×
  183. 181WorcesterMassachusetts, United States
    611.0×
  184. 181PatersonNew Jersey, United States
    611.0×
  185. 185IrapuatoGuanajuato, Mexico
    610.9×
  186. 185CelayaGuanajuato, Mexico
    610.9×
  187. 187New LondonConnecticut, United States
    600.9×
  188. 187San DiegoCalifornia, United States
    600.9×
  189. 189MostaIl-Mosta, Malta
    600.9×
  190. 189SalamancaGuanajuato, Mexico
    600.9×
  191. 191Phra PradaengSamut Prakan, Thailand
    600.9×
  192. 191JacksonMississippi, United States
    600.9×
  193. 191TulsaOklahoma, United States
    600.9×
  194. 191Great FallsMontana, United States
    600.9×
  195. 195BeneventoCampania, Italy
    600.9×
  196. 195Des MoinesIowa, United States
    600.9×
  197. 195TrentonNew Jersey, United States
    600.9×
  198. 198KlaukkalaUusimaa, Finland
    600.9×
  199. 198Fort LauderdaleFlorida, United States
    600.9×
  200. 198DuluthMinnesota, United States
    600.9×

Top 200 of 1,804 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, August 7, 2023, smogrank.com/history/2023-08-07 (accessed 2 Oct 2026).

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