SmogRank / History / August 3, 2023

Most polluted cities on August 3, 2023

1,553 cities ranked by their average PM2.5 over the day; the worst was Puerto Varas, Chile, at 113.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 3, 2023. All episodes.

← Puerto Varas 113.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 3, 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. 1Puerto VarasLos Lagos Region, Chile
    1917.5×
  2. 2Puerto MonttLos Lagos Region, Chile
    1756.0×
  3. 3DushanbeDushanbe, Tajikistan
    1675.3×
  4. 4La UniónLos Ríos Region, Chile
    1604.5×
  5. 5OsornoLos Lagos Region, Chile
    1564.1×
  6. 6Prince AlbertSaskatchewan, Canada
    1513.7×
  7. 7SantiagoSantiago Metropolitan, Chile
    1453.6×
  8. 8HualquiBiobio, Chile
    1403.4×
  9. 9CoronelBiobio, Chile
    1343.3×
  10. 10JakartaJakarta, Indonesia
    1303.2×
  11. 11ValdiviaLos Ríos Region, Chile
    1293.1×
  12. 12BadgerAlaska, United States
    1283.1×
  13. 13RancaguaO'Higgins Region, Chile
    1263.0×
  14. 14Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1253.0×
  15. 15Santa Anita - Los FicusLima region, Peru
    1243.0×
  16. 16ManamaManama, Bahrain
    1192.8×
  17. 17TalcahuanoBiobio, Chile
    1172.8×
  18. 18Lahorelow-cost sensorsPunjab, Pakistan
    1152.8×
  19. 19BeijingBeijing, China
    1152.7×
  20. 20TalaganteSantiago Metropolitan, Chile
    1122.7×
  21. 21Puente AltoSantiago Metropolitan, Chile
    1112.6×
  22. 22Fort McMurrayAlberta, Canada
    1092.6×
  23. 23RengoO'Higgins Region, Chile
    1082.6×
  24. 24BamakoBamako, Mali
    1052.5×
  25. 25TemucoAraucania, Chile
    1022.4×
  26. 26NacimientoBiobio, Chile
    1022.4×
  27. 27São PauloSão Paulo, Brazil
    1012.4×
  28. 28MexicaliBaja California, Mexico
    992.3×
  29. 29Victoria de DurangoDurango, Mexico
    962.2×
  30. 30QuillotaValparaiso, Chile
    962.2×
  31. 31Dhakalow-cost sensorsDhaka Division, Bangladesh
    952.2×
  32. 32HanoiHanoi, Vietnam
    952.2×
  33. 33VernonBritish Columbia, Canada
    952.2×
  34. 34Addis AbabaAddis Ababa, Ethiopia
    942.1×
  35. 35Viña del MarValparaiso, Chile
    922.1×
  36. 35QuinteroValparaiso, Chile
    922.1×
  37. 37WarrenOhio, United States
    902.0×
  38. 38PristinaPristina, Kosovo
    902.0×
  39. 38GuangzhouGuangdong, China
    902.0×
  40. 40ClevelandOhio, United States
    892.0×
  41. 41ConcepciónBiobio, Chile
    892.0×
  42. 42ChennaiTamil Nadu, India
    871.9×
  43. 43CuranilahueBiobio, Chile
    871.9×
  44. 44EriePennsylvania, United States
    851.8×
  45. 45Karachilow-cost sensorsSindh, Pakistan
    841.8×
  46. 46Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    841.8×
  47. 46CantonOhio, United States
    841.8×
  48. 48CheektowagaNew York, United States
    841.8×
  49. 49LimaLima Province, Peru
    831.8×
  50. 50ToméBiobio, Chile
    831.8×
  51. 50YoungstownOhio, United States
    831.8×
  52. 52CoyhaiqueAysén, Chile
    821.7×
  53. 52KenmoreNew York, United States
    821.7×
  54. 54CuricóMaule Region, Chile
    821.7×
  55. 55AntofagastaAntofagasta, Chile
    811.7×
  56. 56Shaker HeightsOhio, United States
    811.7×
  57. 57TolucaMéxico, Mexico
    811.7×
  58. 57CauquenesMaule Region, Chile
    811.7×
  59. 59San Francisco TlalcilalcalpanMéxico, Mexico
    801.7×
  60. 59ConcónValparaiso, Chile
    801.7×
  61. 61Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    801.6×
  62. 62Puerto AysénAysén, Chile
    801.6×
  63. 62St. ThomasOntario, Canada
    801.6×
  64. 64LinaresMaule Region, Chile
    801.6×
  65. 65Nong KhaemBangkok, Thailand
    791.6×
  66. 65XonacatlánMéxico, Mexico
    791.6×
  67. 67West MifflinPennsylvania, United States
    791.6×
  68. 68DelhiDelhi, India
    791.6×
  69. 68KalamazooMichigan, United States
    791.6×
  70. 68PittsburghPennsylvania, United States
    791.6×
  71. 71ToledoOhio, United States
    781.6×
  72. 71WindsorOntario, Canada
    781.6×
  73. 73DetroitMichigan, United States
    781.6×
  74. 74ShenyangLiaoning, China
    781.6×
  75. 75CoquimboCoquimbo Region, Chile
    781.6×
  76. 76LotaBiobio, Chile
    771.6×
  77. 76RochesterNew York, United States
    771.6×
  78. 76ChathamOntario, Canada
    771.6×
  79. 79West MemphisArkansas, United States
    771.5×
  80. 80WilkinsburgPennsylvania, United States
    771.5×
  81. 81Red DeerAlberta, Canada
    771.5×
  82. 82HamiltonOntario, Canada
    761.5×
  83. 83ChiguayanteBiobio, Chile
    761.5×
  84. 83AkronOhio, United States
    761.5×
  85. 85DearbornMichigan, United States
    761.5×
  86. 85SaskatoonSaskatchewan, Canada
    761.5×
  87. 87SteubenvilleOhio, United States
    751.5×
  88. 88Lincoln ParkMichigan, United States
    751.5×
  89. 89Phra PradaengSamut Prakan, Thailand
    751.5×
  90. 89LondonOntario, Canada
    751.5×
  91. 91Islamabadlow-cost sensorsIslamabad, Pakistan
    741.4×
  92. 91MedinaOhio, United States
    741.4×
  93. 91HermitagePennsylvania, United States
    741.4×
  94. 94TalcaMaule Region, Chile
    741.4×
  95. 94St. CatharinesOntario, Canada
    741.4×
  96. 96South BendIndiana, United States
    741.4×
  97. 97Villa Poeta José Gálvez BarrenecheaLima region, Peru
    741.4×
  98. 97Winston-SalemNorth Carolina, United States
    741.4×
  99. 99HollandMichigan, United States
    741.4×
  100. 100OakvilleOntario, Canada
    741.4×
  101. 101CopiapóAtacama, Chile
    731.4×
  102. 102Little RockArkansas, United States
    721.4×
  103. 102SpringdaleArkansas, United States
    721.4×
  104. 102ClemmonsNorth Carolina, United States
    721.4×
  105. 105McKeesportPennsylvania, United States
    721.4×
  106. 105CalgaryAlberta, Canada
    721.4×
  107. 107San Mateo AtencoMéxico, Mexico
    721.4×
  108. 107AricaArica y Parinacota Region, Chile
    721.4×
  109. 109CalamaAntofagasta, Chile
    721.4×
  110. 110WestervilleOhio, United States
    721.3×
  111. 111PortageIndiana, United States
    711.3×
  112. 112TaylorMichigan, United States
    711.3×
  113. 112LimaOhio, United States
    711.3×
  114. 112BrantfordOntario, Canada
    711.3×
  115. 112KitchenerOntario, Canada
    711.3×
  116. 112WaterdownOntario, Canada
    711.3×
  117. 117Bang Bo DistrictSamut Prakan, Thailand
    711.3×
  118. 117MiltonOntario, Canada
    711.3×
  119. 119SarajevoFederation of B&H, Bosnia and Herzegovina
    711.3×
  120. 119Port HuronMichigan, United States
    711.3×
  121. 119JohnstownPennsylvania, United States
    711.3×
  122. 122La SerenaCoquimbo Region, Chile
    701.3×
  123. 122DaytonOhio, United States
    701.3×
  124. 124Great FallsMontana, United States
    701.3×
  125. 125GreensboroNorth Carolina, United States
    701.3×
  126. 125SpringfieldOhio, United States
    701.3×
  127. 125BrooklinOntario, Canada
    701.3×
  128. 128Alto HospicioTarapacá, Chile
    701.3×
  129. 128MiddletownOhio, United States
    701.3×
  130. 130FlorenceSouth Carolina, United States
    701.3×
  131. 131ElkhartIndiana, United States
    691.3×
  132. 131GuelphOntario, Canada
    691.3×
  133. 131SarniaOntario, Canada
    691.3×
  134. 131Thunder BayOntario, Canada
    691.3×
  135. 131San Salvador TizatlalliMéxico, Mexico
    691.3×
  136. 136TocopillaAntofagasta, Chile
    691.3×
  137. 136ChillánÑuble, Chile
    691.3×
  138. 136EdmontonAlberta, Canada
    691.3×
  139. 139KolkataWest Bengal, India
    691.2×
  140. 139BangkokBangkok, Thailand
    691.2×
  141. 141AsprópyrgosAttica, Greece
    691.2×
  142. 141FujinomiyaShizuoka, Japan
    691.2×
  143. 141IndianapolisIndiana, United States
    691.2×
  144. 144NagaiYamagata, Japan
    691.2×
  145. 145YpsilantiMichigan, United States
    681.2×
  146. 146Khlong LuangPathum Thani, Thailand
    681.2×
  147. 146Weirton HeightsWest Virginia, United States
    681.2×
  148. 148TakasakiGunma, Japan
    681.2×
  149. 148AltamontOregon, United States
    681.2×
  150. 150DublinOhio, United States
    681.2×
  151. 150AirdrieAlberta, Canada
    681.2×
  152. 150MississaugaOntario, Canada
    681.2×
  153. 153AndersonIndiana, United States
    671.2×
  154. 153FairbanksAlaska, United States
    671.2×
  155. 155GaryIndiana, United States
    671.2×
  156. 156BitolaBitola, North Macedonia
    671.2×
  157. 156NorwoodOhio, United States
    671.2×
  158. 158Samut PrakanSamut Prakan, Thailand
    671.2×
  159. 159HernandoMississippi, United States
    671.2×
  160. 160GuadalajaraJalisco, Mexico
    661.2×
  161. 160TorontoOntario, Canada
    661.2×
  162. 162BakuBaki, Azerbaijan
    661.1×
  163. 162Grand RapidsMichigan, United States
    661.1×
  164. 164Naucalpan de JuárezMéxico, Mexico
    661.1×
  165. 164Los ÁngelesBiobio, Chile
    661.1×
  166. 164Franklin ParkIllinois, United States
    661.1×
  167. 167RuseRuse, Bulgaria
    651.1×
  168. 168PainesvilleOhio, United States
    651.1×
  169. 169MasonOhio, United States
    651.1×
  170. 170AthensAttica, Greece
    651.1×
  171. 170AntananarivoAnalamanga, Madagascar
    651.1×
  172. 172CincinnatiOhio, United States
    651.1×
  173. 173NorthbrookIllinois, United States
    641.1×
  174. 173NewmarketOntario, Canada
    641.1×
  175. 175Bang KapiBangkok, Thailand
    641.1×
  176. 175Ciudad ApodacaNuevo León, Mexico
    641.1×
  177. 175ShreveportLouisiana, United States
    641.1×
  178. 175AltoonaPennsylvania, United States
    641.1×
  179. 175BramptonOntario, Canada
    641.1×
  180. 180RedfordMichigan, United States
    641.1×
  181. 181Samut SakhonSamut Sakhon, Thailand
    641.1×
  182. 181JenisonMichigan, United States
    641.1×
  183. 181NipomoCalifornia, United States
    641.1×
  184. 181KingstonOntario, Canada
    641.1×
  185. 185CharlotteNorth Carolina, United States
    631.1×
  186. 185LexingtonNorth Carolina, United States
    631.1×
  187. 187ColomboWestern Province, Sri Lanka
    631.0×
  188. 188SalorTashkent Region, Uzbekistan
    631.0×
  189. 188GeroGifu, Japan
    631.0×
  190. 188JacksonMississippi, United States
    631.0×
  191. 188North CharlestonSouth Carolina, United States
    631.0×
  192. 188BellevilleOntario, Canada
    631.0×
  193. 193AcharnésAttica, Greece
    631.0×
  194. 193Nakhon PathomNakhon Pathom, Thailand
    631.0×
  195. 193Saint AndrewsSouth Carolina, United States
    631.0×
  196. 193Calumet CityIllinois, United States
    631.0×
  197. 197Mueang NonthaburiNonthaburi, Thailand
    631.0×
  198. 197AlgiersAlgiers, Algeria
    631.0×
  199. 197UkiahCalifornia, United States
    631.0×
  200. 197Swift CurrentSaskatchewan, Canada
    631.0×

Top 200 of 1,553 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 3, 2023, smogrank.com/history/2023-08-03 (accessed 2 Oct 2026).

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