SmogRank / History / August 5, 2023

Most polluted cities on August 5, 2023

1,836 cities ranked by their average PM2.5 over the day; the worst was San Carlos, Chile, at 104.0 µg/m³. Each city's own local calendar day.

← San Carlos 104.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 5, 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. 1San CarlosÑuble, Chile
    1856.9×
  2. 2NacimientoBiobio, Chile
    1766.1×
  3. 3ChillánÑuble, Chile
    1735.8×
  4. 4VernonBritish Columbia, Canada
    1725.7×
  5. 5CoronelBiobio, Chile
    1655.1×
  6. 6LinaresMaule Region, Chile
    1644.9×
  7. 7CuranilahueBiobio, Chile
    1604.5×
  8. 8CuricóMaule Region, Chile
    1594.5×
  9. 9HualquiBiobio, Chile
    1564.2×
  10. 10RancaguaO'Higgins Region, Chile
    1564.2×
  11. 11TemucoAraucania, Chile
    1564.2×
  12. 12RengoO'Higgins Region, Chile
    1513.7×
  13. 13BadgerAlaska, United States
    1483.6×
  14. 14KelownaBritish Columbia, Canada
    1483.6×
  15. 15DushanbeDushanbe, Tajikistan
    1463.6×
  16. 16Los ÁngelesBiobio, Chile
    1443.5×
  17. 17La UniónLos Ríos Region, Chile
    1393.4×
  18. 18OsornoLos Lagos Region, Chile
    1343.3×
  19. 19Puerto VarasLos Lagos Region, Chile
    1343.3×
  20. 20KigaliKigali, Rwanda
    1323.2×
  21. 21TalcaMaule Region, Chile
    1273.1×
  22. 22FairbanksAlaska, United States
    1263.0×
  23. 23CauquenesMaule Region, Chile
    1243.0×
  24. 24Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1233.0×
  25. 25Puente AltoSantiago Metropolitan, Chile
    1222.9×
  26. 26TalcahuanoBiobio, Chile
    1212.9×
  27. 27Dhakalow-cost sensorsDhaka Division, Bangladesh
    1212.9×
  28. 28NairobiNairobi County, Kenya
    1202.9×
  29. 29MexicaliBaja California, Mexico
    1172.8×
  30. 30Lahorelow-cost sensorsPunjab, Pakistan
    1162.8×
  31. 31JakartaJakarta, Indonesia
    1142.7×
  32. 31São PauloSão Paulo, Brazil
    1142.7×
  33. 33SantiagoSantiago Metropolitan, Chile
    1112.6×
  34. 34Santa Anita - Los FicusLima region, Peru
    1102.6×
  35. 35ManamaManama, Bahrain
    1092.6×
  36. 36Alto HospicioTarapacá, Chile
    1072.5×
  37. 37TalaganteSantiago Metropolitan, Chile
    1062.5×
  38. 38Fort McMurrayAlberta, Canada
    1022.4×
  39. 39PentictonBritish Columbia, Canada
    1012.4×
  40. 40CranbrookBritish Columbia, Canada
    992.3×
  41. 41Prince AlbertSaskatchewan, Canada
    962.2×
  42. 42San Pedro de la PazBiobio, Chile
    952.2×
  43. 43CoyhaiqueAysén, Chile
    942.2×
  44. 44PristinaPristina, Kosovo
    942.1×
  45. 44ToméBiobio, Chile
    942.1×
  46. 46Addis AbabaAddis Ababa, Ethiopia
    932.1×
  47. 47Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    922.1×
  48. 48HyderabadTelangana, India
    922.1×
  49. 49ChiguayanteBiobio, Chile
    892.0×
  50. 50BamakoBamako, Mali
    881.9×
  51. 50ValdiviaLos Ríos Region, Chile
    881.9×
  52. 52QuillotaValparaiso, Chile
    881.9×
  53. 53AntofagastaAntofagasta, Chile
    871.9×
  54. 54Ciudad ApodacaNuevo León, Mexico
    861.9×
  55. 54LondonOntario, Canada
    861.9×
  56. 56DelhiDelhi, India
    861.9×
  57. 56LimaLima Province, Peru
    861.9×
  58. 58ConcepciónBiobio, Chile
    861.9×
  59. 58St. ThomasOntario, Canada
    861.9×
  60. 60Karachilow-cost sensorsSindh, Pakistan
    851.8×
  61. 61BurnsvilleMinnesota, United States
    841.8×
  62. 62Viña del MarValparaiso, Chile
    831.7×
  63. 63HollandMichigan, United States
    831.7×
  64. 64ChathamOntario, Canada
    821.7×
  65. 65LotaBiobio, Chile
    821.7×
  66. 65Saint PaulMinnesota, United States
    821.7×
  67. 65ShakopeeMinnesota, United States
    821.7×
  68. 68KolkataWest Bengal, India
    811.7×
  69. 68Victoria de DurangoDurango, Mexico
    811.7×
  70. 70ChennaiTamil Nadu, India
    811.7×
  71. 70Puerto MonttLos Lagos Region, Chile
    811.7×
  72. 72MinneapolisMinnesota, United States
    801.6×
  73. 72Saint MichaelMinnesota, United States
    801.6×
  74. 74AricaArica y Parinacota Region, Chile
    801.6×
  75. 75HuelvaAndalusia, Spain
    791.6×
  76. 76West MifflinPennsylvania, United States
    791.6×
  77. 77MiddletownOhio, United States
    791.6×
  78. 77Saint CloudMinnesota, United States
    791.6×
  79. 79XonacatlánMéxico, Mexico
    791.6×
  80. 79QuinteroValparaiso, Chile
    791.6×
  81. 81CoquimboCoquimbo Region, Chile
    781.6×
  82. 82Şabāḩ as SālimMubārak al Kabīr, Kuwait
    781.6×
  83. 82Lincoln ParkMichigan, United States
    781.6×
  84. 82YoungstownOhio, United States
    781.6×
  85. 82WindsorOntario, Canada
    781.6×
  86. 86Apple ValleyMinnesota, United States
    781.6×
  87. 86KitchenerOntario, Canada
    781.6×
  88. 88DetroitMichigan, United States
    771.6×
  89. 88WarrenOhio, United States
    771.6×
  90. 88WilkinsburgPennsylvania, United States
    771.6×
  91. 91Islamabadlow-cost sensorsIslamabad, Pakistan
    771.5×
  92. 91DaytonOhio, United States
    771.5×
  93. 91McKeesportPennsylvania, United States
    771.5×
  94. 91BrantfordOntario, Canada
    771.5×
  95. 91OakvilleOntario, Canada
    771.5×
  96. 96PittsburghPennsylvania, United States
    771.5×
  97. 97ConcónValparaiso, Chile
    771.5×
  98. 97CantonOhio, United States
    771.5×
  99. 99CopiapóAtacama, Chile
    771.5×
  100. 100Villa Poeta José Gálvez BarrenecheaLima region, Peru
    761.5×
  101. 101DearbornMichigan, United States
    761.5×
  102. 102YpsilantiMichigan, United States
    761.5×
  103. 103LebanonOhio, United States
    761.5×
  104. 103West FargoNorth Dakota, United States
    761.5×
  105. 103MedinaOhio, United States
    761.5×
  106. 106TolucaMéxico, Mexico
    751.5×
  107. 106NorwoodOhio, United States
    751.5×
  108. 106SpringfieldOhio, United States
    751.5×
  109. 106MiltonOntario, Canada
    751.5×
  110. 110WestervilleOhio, United States
    751.5×
  111. 111Naucalpan de JuárezMéxico, Mexico
    751.5×
  112. 112RadomskoŁódź Voivodeship, Poland
    751.5×
  113. 112MasonOhio, United States
    751.5×
  114. 114HamiltonOntario, Canada
    751.5×
  115. 115Santa CatarinaNuevo León, Mexico
    741.4×
  116. 116Lexingtonlow-cost sensorsMassachusetts, United States
    741.4×
  117. 116ClevelandOhio, United States
    741.4×
  118. 118Toms RiverNew Jersey, United States
    741.4×
  119. 118SaskatoonSaskatchewan, Canada
    741.4×
  120. 120Eau ClaireWisconsin, United States
    741.4×
  121. 121Nong KhaemBangkok, Thailand
    731.4×
  122. 121AkronOhio, United States
    731.4×
  123. 123KalamazooMichigan, United States
    731.4×
  124. 123TaylorMichigan, United States
    731.4×
  125. 125CincinnatiOhio, United States
    731.4×
  126. 125South BendIndiana, United States
    731.4×
  127. 127San Mateo AtencoMéxico, Mexico
    731.4×
  128. 127Calumet CityIllinois, United States
    731.4×
  129. 127WaterdownOntario, Canada
    731.4×
  130. 130AppletonWisconsin, United States
    721.4×
  131. 130Green BayWisconsin, United States
    721.4×
  132. 132MostaIl-Mosta, Malta
    721.4×
  133. 132San Francisco TlalcilalcalpanMéxico, Mexico
    721.4×
  134. 132AndersonIndiana, United States
    721.4×
  135. 132RochesterMinnesota, United States
    721.4×
  136. 136CatañoCataño, Puerto Rico
    721.4×
  137. 137IndianapolisIndiana, United States
    721.4×
  138. 137ElkhartIndiana, United States
    721.4×
  139. 139GuelphOntario, Canada
    721.3×
  140. 140Puerto AysénAysén, Chile
    711.3×
  141. 141EriePennsylvania, United States
    711.3×
  142. 141MississaugaOntario, Canada
    711.3×
  143. 143Ciudad Benito JuárezNuevo León, Mexico
    711.3×
  144. 144NagaiYamagata, Japan
    711.3×
  145. 144SteubenvilleOhio, United States
    711.3×
  146. 144WheelingWest Virginia, United States
    711.3×
  147. 144San Salvador TizatlalliMéxico, Mexico
    711.3×
  148. 148PleasantvilleNew Jersey, United States
    711.3×
  149. 148DublinOhio, United States
    711.3×
  150. 150TocopillaAntofagasta, Chile
    701.3×
  151. 150Grand RapidsMichigan, United States
    701.3×
  152. 150AltoonaPennsylvania, United States
    701.3×
  153. 153Franklin ParkIllinois, United States
    701.3×
  154. 153JenisonMichigan, United States
    701.3×
  155. 155PortageIndiana, United States
    701.3×
  156. 155MilwaukeeWisconsin, United States
    701.3×
  157. 157AsprópyrgosAttica, Greece
    701.3×
  158. 157Phra PradaengSamut Prakan, Thailand
    701.3×
  159. 157TakasakiGunma, Japan
    701.3×
  160. 157CalamaAntofagasta, Chile
    701.3×
  161. 157JolietIllinois, United States
    701.3×
  162. 157NapervilleIllinois, United States
    701.3×
  163. 157Shaker HeightsOhio, United States
    701.3×
  164. 157SarniaOntario, Canada
    701.3×
  165. 165HanoiHanoi, Vietnam
    691.3×
  166. 165St. CatharinesOntario, Canada
    691.3×
  167. 167HumennéPrešov Region, Slovakia
    691.3×
  168. 167GuangzhouGuangdong, China
    691.3×
  169. 167Port HuronMichigan, United States
    691.3×
  170. 170LansingMichigan, United States
    691.3×
  171. 170BramptonOntario, Canada
    691.3×
  172. 172SliemaTas-Sliema, Malta
    691.2×
  173. 172RedfordMichigan, United States
    691.2×
  174. 172JohnstownPennsylvania, United States
    691.2×
  175. 175WaukeshaWisconsin, United States
    691.2×
  176. 176NorthbrookIllinois, United States
    691.2×
  177. 177AlgecirasAndalusia, Spain
    681.2×
  178. 177GaryIndiana, United States
    681.2×
  179. 179Weirton HeightsWest Virginia, United States
    681.2×
  180. 179Jurupa ValleyCalifornia, United States
    681.2×
  181. 181MonterreyNuevo León, Mexico
    681.2×
  182. 181RockfordIllinois, United States
    681.2×
  183. 183IshinomakiMiyagi, Japan
    671.2×
  184. 184SarajevoFederation of B&H, Bosnia and Herzegovina
    671.2×
  185. 184HammondIndiana, United States
    671.2×
  186. 184La CrosseWisconsin, United States
    671.2×
  187. 187PueblaPuebla, Mexico
    671.2×
  188. 187AshlandKentucky, United States
    671.2×
  189. 187PeoriaIllinois, United States
    671.2×
  190. 187BlaineMinnesota, United States
    671.2×
  191. 187MadisonWisconsin, United States
    671.2×
  192. 192BeijingBeijing, China
    671.2×
  193. 192Fort ThomasKentucky, United States
    671.2×
  194. 192KokomoIndiana, United States
    671.2×
  195. 192Great FallsMontana, United States
    671.2×
  196. 196MuscatineIowa, United States
    671.2×
  197. 197BangkokBangkok, Thailand
    661.2×
  198. 198Bang Bo DistrictSamut Prakan, Thailand
    661.2×
  199. 198CalexicoCalifornia, United States
    661.2×
  200. 200DuluthMinnesota, United States
    661.1×

Top 200 of 1,836 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 5, 2023, smogrank.com/history/2023-08-05 (accessed 2 Oct 2026).

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