SmogRank / History / August 9, 2025

Most polluted cities on August 9, 2025

2,469 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 239.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 9, 2025. All episodes.

← Coyhaique 239.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for August 9, 2025, 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
    32815.9×
  2. 2Puerto VarasLos Lagos Region, Chile
    26212.5×
  3. 3OsornoLos Lagos Region, Chile
    1998.2×
  4. 4LudhianaPunjab, India
    1927.6×
  5. 5Los ÁngelesBiobio, Chile
    1897.4×
  6. 6San CarlosÑuble, Chile
    1877.1×
  7. 7Sri GanganagarRajasthan, India
    1846.9×
  8. 8GorakhpurUttar Pradesh, India
    1846.8×
  9. 9SaskatoonSaskatchewan, Canada
    1806.5×
  10. 10ChillánÑuble, Chile
    1776.2×
  11. 11LinaresMaule Region, Chile
    1766.0×
  12. 12CuranilahueBiobio, Chile
    1745.9×
  13. 13VillarricaAraucania, Chile
    1695.4×
  14. 14NacimientoBiobio, Chile
    1675.2×
  15. 15RamanathapuramTamil Nadu, India
    1675.2×
  16. 16Puerto MonttLos Lagos Region, Chile
    1665.1×
  17. 17Swift CurrentSaskatchewan, Canada
    1645.0×
  18. 18ValdiviaLos Ríos Region, Chile
    1634.9×
  19. 19TemucoAraucania, Chile
    1614.7×
  20. 20ManamaManama, Bahrain
    1594.4×
  21. 21La UniónLos Ríos Region, Chile
    1584.4×
  22. 22CuricóMaule Region, Chile
    1584.3×
  23. 23HualquiBiobio, Chile
    1533.9×
  24. 24RancaguaO'Higgins Region, Chile
    1523.8×
  25. 25Medicine HatAlberta, Canada
    1513.7×
  26. 26NagapattinamTamil Nadu, India
    1513.7×
  27. 26JhānsiUttar Pradesh, India
    1513.7×
  28. 28Ashaimanlow-cost sensorsGreater Accra, Ghana
    1503.7×
  29. 29TalcaMaule Region, Chile
    1493.7×
  30. 30Faisalabadlow-cost sensorsPunjab, Pakistan
    1473.6×
  31. 31Gujranwalalow-cost sensorsPunjab, Pakistan
    1473.6×
  32. 32CoronelBiobio, Chile
    1433.5×
  33. 33Lahorelow-cost sensorsPunjab, Pakistan
    1423.5×
  34. 34Fort McMurrayAlberta, Canada
    1403.4×
  35. 35GummidipundiTamil Nadu, India
    1403.4×
  36. 36PithampurMadhya Pradesh, India
    1363.3×
  37. 37Puerto AysénAysén, Chile
    1323.2×
  38. 38BhāgalpurBihar, India
    1303.2×
  39. 39TirupparangunramTamil Nadu, India
    1303.1×
  40. 40DushanbeDushanbe, Tajikistan
    1283.1×
  41. 40SangāreddiTelangana, India
    1283.1×
  42. 40RengoO'Higgins Region, Chile
    1283.1×
  43. 43Rawalpindilow-cost sensorsPunjab, Pakistan
    1243.0×
  44. 43ChittoorAndhra Pradesh, India
    1243.0×
  45. 45GobindgarhPunjab, India
    1222.9×
  46. 46SantiagoSantiago Metropolitan, Chile
    1192.9×
  47. 47SaharsaBihar, India
    1182.8×
  48. 48VijayawadaAndhra Pradesh, India
    1182.8×
  49. 48HualpénBiobio, Chile
    1182.8×
  50. 50BathindaPunjab, India
    1152.8×
  51. 50Aya NagarDelhi, India
    1152.8×
  52. 52Puente AltoSantiago Metropolitan, Chile
    1152.7×
  53. 53TonkRajasthan, India
    1142.7×
  54. 54Islamabadlow-cost sensorsIslamabad, Pakistan
    1122.7×
  55. 55BānswāraRajasthan, India
    1122.7×
  56. 56PanvelMaharashtra, India
    1102.6×
  57. 57CauquenesMaule Region, Chile
    1082.6×
  58. 58Nepeanlow-cost sensorsOntario, Canada
    1082.5×
  59. 58MandideepMadhya Pradesh, India
    1082.5×
  60. 60JakartaJakarta, Indonesia
    1072.5×
  61. 61KadapaAndhra Pradesh, India
    1052.5×
  62. 62TiruchirappalliTamil Nadu, India
    1052.5×
  63. 63Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1032.4×
  64. 63SpringdaleArkansas, United States
    1032.4×
  65. 65PurniaBihar, India
    1032.4×
  66. 66Multanlow-cost sensorsPunjab, Pakistan
    1032.4×
  67. 67MalegaonMaharashtra, India
    1022.4×
  68. 68KalyānMaharashtra, India
    1022.4×
  69. 69SamāstipurBihar, India
    1022.4×
  70. 70VelloreTamil Nadu, India
    1012.4×
  71. 71Sialkotlow-cost sensorsPunjab, Pakistan
    992.3×
  72. 72Santa Anita - Los FicusLima region, Peru
    982.3×
  73. 73PāliRajasthan, India
    982.3×
  74. 73KatiharBihar, India
    982.3×
  75. 75CandelariaCanary Islands, Spain
    972.3×
  76. 76NagaonAssam, India
    972.3×
  77. 77KannurKerala, India
    972.2×
  78. 78BhiwadiRajasthan, India
    962.2×
  79. 79SaugorMadhya Pradesh, India
    962.2×
  80. 80KanchipuramTamil Nadu, India
    962.2×
  81. 81GayaBihar, India
    952.2×
  82. 82AjmerRajasthan, India
    952.2×
  83. 82TalaganteSantiago Metropolitan, Chile
    952.2×
  84. 84QuébecQuebec, Canada
    952.2×
  85. 85UdaipurRajasthan, India
    942.2×
  86. 85San Francisco De BorjaLima region, Peru
    942.2×
  87. 87NalbāriAssam, India
    942.2×
  88. 88BadlapurMaharashtra, India
    942.1×
  89. 89AnantapurAndhra Pradesh, India
    942.1×
  90. 90JaipurRajasthan, India
    942.1×
  91. 91ĀsansolWest Bengal, India
    932.1×
  92. 91CholulaPuebla, Mexico
    932.1×
  93. 93Temalow-cost sensorsGreater Accra, Ghana
    932.1×
  94. 94ChāpraBihar, India
    932.1×
  95. 94TuxtlaChiapas, Mexico
    932.1×
  96. 94QuilpuéValparaiso, Chile
    932.1×
  97. 97QuthbullapurTelangana, India
    932.1×
  98. 98ThrissurKerala, India
    912.0×
  99. 99AriyalūrTamil Nadu, India
    912.0×
  100. 100BhiwandiMaharashtra, India
    902.0×
  101. 100QuillotaValparaiso, Chile
    902.0×
  102. 102PratāpgarhRajasthan, India
    902.0×
  103. 103KotaRajasthan, India
    902.0×
  104. 104JumillaMurcia, Spain
    902.0×
  105. 104UliyazhathuraKerala, India
    902.0×
  106. 106Dera Colliery TownshipOdisha, India
    902.0×
  107. 107OotyTamil Nadu, India
    902.0×
  108. 108XonacatlánMéxico, Mexico
    892.0×
  109. 109ArāriaBihar, India
    892.0×
  110. 110JalandharPunjab, India
    892.0×
  111. 110Collado-VillalbaMadrid, Spain
    892.0×
  112. 112FuenlabradaMadrid, Spain
    881.9×
  113. 113Accralow-cost sensorsGreater Accra, Ghana
    881.9×
  114. 114VrindāvanUttar Pradesh, India
    881.9×
  115. 115DūngarpurRajasthan, India
    871.9×
  116. 116ShawiniganQuebec, Canada
    871.9×
  117. 117PatnaBihar, India
    871.9×
  118. 117MangaluruKarnataka, India
    871.9×
  119. 117BawānaDelhi, India
    871.9×
  120. 120DurgapurWest Bengal, India
    871.9×
  121. 120AlangadKerala, India
    871.9×
  122. 122RājsamandRajasthan, India
    861.9×
  123. 123Medina Estateslow-cost sensorsGreater Accra, Ghana
    851.8×
  124. 124VapiGujarat, India
    851.8×
  125. 125JhālāwārRajasthan, India
    851.8×
  126. 126JalgaonMaharashtra, India
    851.8×
  127. 127Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    841.8×
  128. 127PatancheruTelangana, India
    841.8×
  129. 127ChāndaMaharashtra, India
    841.8×
  130. 127Trois-RivièresQuebec, Canada
    841.8×
  131. 131DausaRajasthan, India
    841.8×
  132. 132AurangābādBihar, India
    841.8×
  133. 132SteubenvilleOhio, United States
    841.8×
  134. 134Santa LucíaCanary Islands, Spain
    831.8×
  135. 134Sorel-TracyQuebec, Canada
    831.8×
  136. 136ManlleuCatalonia, Spain
    831.8×
  137. 136San Salvador TizatlalliMéxico, Mexico
    831.8×
  138. 138RānīganjWest Bengal, India
    831.7×
  139. 138NandedMaharashtra, India
    831.7×
  140. 138MuzaffarnagarUttar Pradesh, India
    831.7×
  141. 138HyderabadTelangana, India
    831.7×
  142. 142GranbyQuebec, Canada
    821.7×
  143. 143RasapūdipalemAndhra Pradesh, India
    821.7×
  144. 143AntofagastaAntofagasta, Chile
    821.7×
  145. 145BhopalMadhya Pradesh, India
    821.7×
  146. 146BaripādaOdisha, India
    821.7×
  147. 146ConcónValparaiso, Chile
    821.7×
  148. 148BhayandarMaharashtra, India
    821.7×
  149. 149SarajevoFederation of B&H, Bosnia and Herzegovina
    821.7×
  150. 149San Pedro de la PazBiobio, Chile
    821.7×
  151. 151QuinteroValparaiso, Chile
    811.7×
  152. 152PuneMaharashtra, India
    811.7×
  153. 152AmritsarPunjab, India
    811.7×
  154. 152BaddiHimachal Pradesh, India
    811.7×
  155. 155San Francisco TlalcilalcalpanMéxico, Mexico
    811.7×
  156. 155SingrauliMadhya Pradesh, India
    811.7×
  157. 157BhelaiChhattisgarh, India
    811.7×
  158. 157TalcahuanoBiobio, Chile
    811.7×
  159. 159MóstolesMadrid, Spain
    801.7×
  160. 160SaguenayQuebec, Canada
    801.6×
  161. 161DewasMadhya Pradesh, India
    801.6×
  162. 161Winterthurlow-cost sensorsZurich, Switzerland
    801.6×
  163. 163RatlāmMadhya Pradesh, India
    801.6×
  164. 163NagpurMaharashtra, India
    801.6×
  165. 165ChūruRajasthan, India
    801.6×
  166. 165Melbournelow-cost sensorsVictoria, Australia
    801.6×
  167. 165ConcepciónBiobio, Chile
    801.6×
  168. 165CallaoCallao, Peru
    801.6×
  169. 169ChiguayanteBiobio, Chile
    791.6×
  170. 170DorvalQuebec, Canada
    791.6×
  171. 171RourkelaOdisha, India
    791.6×
  172. 171MontréalQuebec, Canada
    791.6×
  173. 173Iloilolow-cost sensorsWestern Visayas, Philippines
    791.6×
  174. 173LorcaMurcia, Spain
    791.6×
  175. 173Naucalpan de JuárezMéxico, Mexico
    791.6×
  176. 176LucknowUttar Pradesh, India
    781.6×
  177. 176JhunjhunūnRajasthan, India
    781.6×
  178. 176EisenGyeongsangbuk-do, South Korea
    781.6×
  179. 176BellevilleOntario, Canada
    781.6×
  180. 180Istanbullow-cost sensorsIstanbul, Turkey
    781.6×
  181. 180OttawaOntario, Canada
    781.6×
  182. 182Sawai MadhopurRajasthan, India
    781.6×
  183. 182AlcantarillaMurcia, Spain
    781.6×
  184. 182Tepeji del Río de OcampoHidalgo, Mexico
    781.6×
  185. 185MurciaMurcia, Spain
    771.6×
  186. 186TambaramTamil Nadu, India
    771.5×
  187. 186NashikMaharashtra, India
    771.5×
  188. 186MuzaffarpurBihar, India
    771.5×
  189. 189Molina de SeguraMurcia, Spain
    771.5×
  190. 189Barrio de PeralMurcia, Spain
    771.5×
  191. 191MorādābādUttar Pradesh, India
    771.5×
  192. 191Zagreblow-cost sensorsZagreb, Croatia
    771.5×
  193. 193Dubailow-cost sensorsDubai, United Arab Emirates
    771.5×
  194. 193HayangGyeongsangbuk-do, South Korea
    771.5×
  195. 193LotaBiobio, Chile
    771.5×
  196. 193DrummondvilleQuebec, Canada
    771.5×
  197. 197SiliguriWest Bengal, India
    761.5×
  198. 197DhaulpurRajasthan, India
    761.5×
  199. 197BrossardQuebec, Canada
    761.5×
  200. 200SāngliMaharashtra, India
    761.5×

Top 200 of 2,469 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 9, 2025, smogrank.com/history/2025-08-09 (accessed 2 Oct 2026).

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