SmogRank / History / July 25, 2023

Most polluted cities on July 25, 2023

1,285 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 148.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 25, 2023. All episodes.

← Coyhaique 148.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for July 25, 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
    2239.9×
  2. 2Ceglie MessapicaApulia, Italy
    1947.8×
  3. 3DushanbeDushanbe, Tajikistan
    1604.6×
  4. 4Lahorelow-cost sensorsPunjab, Pakistan
    1604.5×
  5. 5JakartaJakarta, Indonesia
    1554.1×
  6. 6RancaguaO'Higgins Region, Chile
    1533.9×
  7. 7LansingMichigan, United States
    1533.9×
  8. 8CuricóMaule Region, Chile
    1523.8×
  9. 9Franklin ParkIllinois, United States
    1523.8×
  10. 10RengoO'Higgins Region, Chile
    1523.8×
  11. 11Calumet CityIllinois, United States
    1463.6×
  12. 12South BendIndiana, United States
    1433.5×
  13. 13SantiagoSantiago Metropolitan, Chile
    1413.4×
  14. 14Des PlainesIllinois, United States
    1393.4×
  15. 15KalamazooMichigan, United States
    1373.4×
  16. 16East ChicagoIndiana, United States
    1373.3×
  17. 17LinaresMaule Region, Chile
    1353.3×
  18. 18MostaIl-Mosta, Malta
    1343.3×
  19. 19NorthbrookIllinois, United States
    1333.2×
  20. 20JolietIllinois, United States
    1323.2×
  21. 21NapervilleIllinois, United States
    1263.1×
  22. 22MilwaukeeWisconsin, United States
    1263.0×
  23. 23CaryIllinois, United States
    1253.0×
  24. 24RockfordIllinois, United States
    1253.0×
  25. 25JenisonMichigan, United States
    1253.0×
  26. 26TalaganteSantiago Metropolitan, Chile
    1243.0×
  27. 27HammondIndiana, United States
    1233.0×
  28. 27Grand RapidsMichigan, United States
    1233.0×
  29. 29ElkhartIndiana, United States
    1202.9×
  30. 30WaukeshaWisconsin, United States
    1192.9×
  31. 31South MilwaukeeWisconsin, United States
    1182.8×
  32. 32ZionIllinois, United States
    1162.8×
  33. 33KokomoIndiana, United States
    1162.8×
  34. 34Puerto AysénAysén, Chile
    1152.8×
  35. 35BendOregon, United States
    1142.7×
  36. 36RedmondOregon, United States
    1132.7×
  37. 37HollandMichigan, United States
    1132.7×
  38. 38ChicagoIllinois, United States
    1092.6×
  39. 39PristinaPristina, Kosovo
    1072.5×
  40. 40Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1062.5×
  41. 40AndersonIndiana, United States
    1062.5×
  42. 42NacimientoBiobio, Chile
    1042.5×
  43. 42DearbornMichigan, United States
    1042.5×
  44. 42Prince AlbertSaskatchewan, Canada
    1042.5×
  45. 45TalcaMaule Region, Chile
    1042.4×
  46. 46DetroitMichigan, United States
    1022.4×
  47. 47LafayetteIndiana, United States
    1022.4×
  48. 47WindsorOntario, Canada
    1022.4×
  49. 49Puente AltoSantiago Metropolitan, Chile
    1012.4×
  50. 49MadisonWisconsin, United States
    1012.4×
  51. 51NaplesCampania, Italy
    1012.4×
  52. 51Lincoln ParkMichigan, United States
    1012.4×
  53. 53Oak LawnIllinois, United States
    1002.3×
  54. 54TaylorMichigan, United States
    992.3×
  55. 55YpsilantiMichigan, United States
    972.2×
  56. 56CuranilahueBiobio, Chile
    962.2×
  57. 56IndianapolisIndiana, United States
    962.2×
  58. 58BeneventoCampania, Italy
    962.2×
  59. 59Port HuronMichigan, United States
    952.2×
  60. 60AppletonWisconsin, United States
    942.2×
  61. 60Fort McMurrayAlberta, Canada
    942.2×
  62. 62La UniónLos Ríos Region, Chile
    932.1×
  63. 63SarajevoFederation of B&H, Bosnia and Herzegovina
    932.1×
  64. 63CauquenesMaule Region, Chile
    932.1×
  65. 65QuillotaValparaiso, Chile
    932.1×
  66. 66PeoriaIllinois, United States
    932.1×
  67. 67Tepeji del Río de OcampoHidalgo, Mexico
    932.1×
  68. 68AntananarivoAnalamanga, Madagascar
    912.1×
  69. 69DelhiDelhi, India
    912.0×
  70. 69FishersIndiana, United States
    912.0×
  71. 71Dhakalow-cost sensorsDhaka Division, Bangladesh
    902.0×
  72. 71OsornoLos Lagos Region, Chile
    902.0×
  73. 73SliemaTas-Sliema, Malta
    902.0×
  74. 74Eau ClaireWisconsin, United States
    902.0×
  75. 74SaskatoonSaskatchewan, Canada
    902.0×
  76. 76SarniaOntario, Canada
    892.0×
  77. 77Şabāḩ as SālimMubārak al Kabīr, Kuwait
    892.0×
  78. 78ChillánÑuble, Chile
    881.9×
  79. 79Bay CityMichigan, United States
    881.9×
  80. 80FlintMichigan, United States
    881.9×
  81. 81ToledoOhio, United States
    881.9×
  82. 82ClintonIowa, United States
    871.9×
  83. 83BamakoBamako, Mali
    871.9×
  84. 84BloomingtonIllinois, United States
    851.8×
  85. 85SalernoCampania, Italy
    851.8×
  86. 86CoronelBiobio, Chile
    841.8×
  87. 87Santa Anita - Los FicusLima region, Peru
    831.8×
  88. 88Green BayWisconsin, United States
    821.7×
  89. 89San CarlosÑuble, Chile
    821.7×
  90. 89Fort LauderdaleFlorida, United States
    821.7×
  91. 91LondonOntario, Canada
    821.7×
  92. 92MexicaliBaja California, Mexico
    821.7×
  93. 93BurnsvilleMinnesota, United States
    821.7×
  94. 93ChathamOntario, Canada
    821.7×
  95. 95SpringfieldOhio, United States
    811.7×
  96. 96Puerto MonttLos Lagos Region, Chile
    811.7×
  97. 96DaytonOhio, United States
    811.7×
  98. 96Saint PaulMinnesota, United States
    811.7×
  99. 99VeniceFlorida, United States
    811.7×
  100. 100RedfordMichigan, United States
    811.7×
  101. 101AsprópyrgosAttica, Greece
    801.6×
  102. 102MiddletownOhio, United States
    801.6×
  103. 102RochesterMinnesota, United States
    801.6×
  104. 104MolineIllinois, United States
    801.6×
  105. 105Bonita SpringsFlorida, United States
    801.6×
  106. 106ConcónValparaiso, Chile
    791.6×
  107. 106NorwoodOhio, United States
    791.6×
  108. 106ShakopeeMinnesota, United States
    791.6×
  109. 109CoquimboCoquimbo Region, Chile
    791.6×
  110. 109DuluthMinnesota, United States
    791.6×
  111. 111QuinteroValparaiso, Chile
    791.6×
  112. 111Apple ValleyMinnesota, United States
    791.6×
  113. 113Saint MichaelMinnesota, United States
    781.6×
  114. 114DavenportIowa, United States
    781.6×
  115. 115ShenyangLiaoning, China
    781.6×
  116. 116XonacatlánMéxico, Mexico
    781.6×
  117. 117Puerto VarasLos Lagos Region, Chile
    771.6×
  118. 118La CrosseWisconsin, United States
    771.5×
  119. 119ValdiviaLos Ríos Region, Chile
    771.5×
  120. 119TalcahuanoBiobio, Chile
    771.5×
  121. 121TemucoAraucania, Chile
    771.5×
  122. 122SalorTashkent Region, Uzbekistan
    771.5×
  123. 122Viña del MarValparaiso, Chile
    771.5×
  124. 122LebanonOhio, United States
    771.5×
  125. 122MinneapolisMinnesota, United States
    771.5×
  126. 126LimaLima Province, Peru
    761.5×
  127. 127SuperiorWisconsin, United States
    761.5×
  128. 128HualquiBiobio, Chile
    761.5×
  129. 129DecaturIllinois, United States
    761.5×
  130. 130PrešovPrešov Region, Slovakia
    751.5×
  131. 130WestervilleOhio, United States
    751.5×
  132. 132KitchenerOntario, Canada
    751.5×
  133. 133Ciudad JuárezChihuahua, Mexico
    751.5×
  134. 133CincinnatiOhio, United States
    751.5×
  135. 135Los ÁngelesBiobio, Chile
    751.5×
  136. 136Saint CloudMinnesota, United States
    741.4×
  137. 137MasonOhio, United States
    741.4×
  138. 138MuscatineIowa, United States
    741.4×
  139. 139Corpus ChristiTexas, United States
    741.4×
  140. 140San Francisco TlalcilalcalpanMéxico, Mexico
    731.4×
  141. 141White OakOhio, United States
    731.4×
  142. 141BrantfordOntario, Canada
    731.4×
  143. 143Little RockArkansas, United States
    731.4×
  144. 144Abujalow-cost sensorsFCT, Nigeria
    721.4×
  145. 144MiamiFlorida, United States
    721.4×
  146. 146BirminghamAlabama, United States
    721.4×
  147. 146EdinburgTexas, United States
    721.4×
  148. 146Iowa CityIowa, United States
    721.4×
  149. 146GuelphOntario, Canada
    721.4×
  150. 150Coconut CreekFlorida, United States
    721.4×
  151. 150DavieFlorida, United States
    721.4×
  152. 152San Andrés TuxtlaVeracruz, Mexico
    721.4×
  153. 153HomesteadFlorida, United States
    721.3×
  154. 154BelmopanCayo District, Belize
    711.3×
  155. 155HumennéPrešov Region, Slovakia
    711.3×
  156. 155West MemphisArkansas, United States
    711.3×
  157. 157Islamabadlow-cost sensorsIslamabad, Pakistan
    711.3×
  158. 157La SerenaCoquimbo Region, Chile
    711.3×
  159. 157BarrieOntario, Canada
    711.3×
  160. 157BrandonManitoba, Canada
    711.3×
  161. 157San Pedro de la PazBiobio, Chile
    711.3×
  162. 162KošiceKošice Region, Slovakia
    711.3×
  163. 162LimaOhio, United States
    711.3×
  164. 164AthensAttica, Greece
    711.3×
  165. 164FontanaCalifornia, United States
    711.3×
  166. 166DublinOhio, United States
    701.3×
  167. 166HamiltonOntario, Canada
    701.3×
  168. 168ChennaiTamil Nadu, India
    701.3×
  169. 168AricaArica y Parinacota Region, Chile
    701.3×
  170. 168Delray BeachFlorida, United States
    701.3×
  171. 171JeddahMecca Region, Saudi Arabia
    701.3×
  172. 171AntofagastaAntofagasta, Chile
    701.3×
  173. 171Terre HauteIndiana, United States
    701.3×
  174. 171ClevelandOhio, United States
    701.3×
  175. 175BitolaBitola, North Macedonia
    701.3×
  176. 175TolucaMéxico, Mexico
    701.3×
  177. 175NewmarketOntario, Canada
    701.3×
  178. 175OakvilleOntario, Canada
    701.3×
  179. 179Nong KhaemBangkok, Thailand
    701.3×
  180. 179Deerfield BeachFlorida, United States
    701.3×
  181. 179SpokaneWashington, United States
    701.3×
  182. 182SpringfieldIllinois, United States
    691.3×
  183. 183Phra PradaengSamut Prakan, Thailand
    691.3×
  184. 183MiltonOntario, Canada
    691.3×
  185. 185CraiovaDolj, Romania
    691.2×
  186. 186Vranov nad TopľouPrešov Region, Slovakia
    691.2×
  187. 186ToméBiobio, Chile
    691.2×
  188. 186RiversideCalifornia, United States
    691.2×
  189. 189GuangzhouGuangdong, China
    691.2×
  190. 189AnkenyIowa, United States
    691.2×
  191. 189West FargoNorth Dakota, United States
    691.2×
  192. 192Karachilow-cost sensorsSindh, Pakistan
    681.2×
  193. 192HueytownAlabama, United States
    681.2×
  194. 192SarasotaFlorida, United States
    681.2×
  195. 195HanoiHanoi, Vietnam
    681.2×
  196. 195Bang Bo DistrictSamut Prakan, Thailand
    681.2×
  197. 195BlaineMinnesota, United States
    681.2×
  198. 198WatertownSouth Dakota, United States
    681.2×
  199. 199BeijingBeijing, China
    681.2×
  200. 200LotaBiobio, Chile
    671.2×

Top 200 of 1,285 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, July 25, 2023, smogrank.com/history/2023-07-25 (accessed 2 Oct 2026).

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