SmogRank / History / August 3, 2025

Most polluted cities on August 3, 2025

2,555 cities ranked by their average PM2.5 over the day; the worst was Fort McMurray, Canada, at 354.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 3, 2025. All episodes.

← Fort McMurray 354.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for August 3, 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. 1Fort McMurrayAlberta, Canada
    500+23.6×
  2. 2Sri GanganagarRajasthan, India
    1897.3×
  3. 3DhaulpurRajasthan, India
    1887.2×
  4. 4GayaBihar, India
    1786.2×
  5. 5HualpénBiobio, Chile
    1756.0×
  6. 6ChāpraBihar, India
    1725.7×
  7. 7Oconomowoclow-cost sensorsWisconsin, United States
    1665.2×
  8. 8KigaliKigali, Rwanda
    1665.2×
  9. 9TalcahuanoBiobio, Chile
    1644.9×
  10. 10CuricóMaule Region, Chile
    1604.6×
  11. 11NacimientoBiobio, Chile
    1604.6×
  12. 12MilwaukeeWisconsin, United States
    1604.5×
  13. 13WaukeshaWisconsin, United States
    1594.5×
  14. 14AppletonWisconsin, United States
    1554.1×
  15. 15Green BayWisconsin, United States
    1554.1×
  16. 16CoyhaiqueAysén, Chile
    1544.0×
  17. 16NewmarketOntario, Canada
    1544.0×
  18. 16Aya NagarDelhi, India
    1544.0×
  19. 19VillarricaAraucania, Chile
    1544.0×
  20. 20UnderaGujarat, India
    1544.0×
  21. 21RengoO'Higgins Region, Chile
    1533.9×
  22. 22MiltonOntario, Canada
    1533.9×
  23. 23BarrieOntario, Canada
    1533.9×
  24. 23TorontoOntario, Canada
    1533.9×
  25. 25Gujranwalalow-cost sensorsPunjab, Pakistan
    1523.8×
  26. 26ChittoorAndhra Pradesh, India
    1523.8×
  27. 27Nepeanlow-cost sensorsOntario, Canada
    1523.8×
  28. 28Grand RapidsMichigan, United States
    1513.7×
  29. 29OakvilleOntario, Canada
    1513.7×
  30. 29Prince AlbertSaskatchewan, Canada
    1513.7×
  31. 31Rouyn-NorandaQuebec, Canada
    1513.7×
  32. 32BramptonOntario, Canada
    1483.6×
  33. 33Lahorelow-cost sensorsPunjab, Pakistan
    1483.6×
  34. 33Bihār SharīfBihar, India
    1483.6×
  35. 35Puerto AysénAysén, Chile
    1473.6×
  36. 36GummidipundiTamil Nadu, India
    1463.6×
  37. 36AllistonOntario, Canada
    1463.6×
  38. 38SaguenayQuebec, Canada
    1463.6×
  39. 39South MilwaukeeWisconsin, United States
    1453.6×
  40. 40LansingMichigan, United States
    1433.5×
  41. 41PeterboroughOntario, Canada
    1433.5×
  42. 42OsornoLos Lagos Region, Chile
    1423.5×
  43. 43MississaugaOntario, Canada
    1413.4×
  44. 44North BayOntario, Canada
    1403.4×
  45. 45Bay CityMichigan, United States
    1383.4×
  46. 46Sault Ste. MarieOntario, Canada
    1373.4×
  47. 47GuelphOntario, Canada
    1363.3×
  48. 48Greater SudburyOntario, Canada
    1353.3×
  49. 49LinaresMaule Region, Chile
    1343.3×
  50. 49KitchenerOntario, Canada
    1343.3×
  51. 51TalaganteSantiago Metropolitan, Chile
    1333.2×
  52. 52Faisalabadlow-cost sensorsPunjab, Pakistan
    1323.2×
  53. 53JenisonMichigan, United States
    1303.2×
  54. 54BhāgalpurBihar, India
    1303.1×
  55. 55ManamaManama, Bahrain
    1293.1×
  56. 57BellevilleOntario, Canada
    1293.1×
  57. 58BrantfordOntario, Canada
    1283.1×
  58. 59MothīhāriBihar, India
    1273.1×
  59. 59WaterdownOntario, Canada
    1273.1×
  60. 61HamiltonOntario, Canada
    1263.1×
  61. 61LondonOntario, Canada
    1263.1×
  62. 63SarniaOntario, Canada
    1263.0×
  63. 64TalcaMaule Region, Chile
    1263.0×
  64. 65OttawaOntario, Canada
    1253.0×
  65. 66Sialkotlow-cost sensorsPunjab, Pakistan
    1253.0×
  66. 66ArāriaBihar, India
    1253.0×
  67. 68JakartaJakarta, Indonesia
    1243.0×
  68. 69WyomingMichigan, United States
    1243.0×
  69. 70Iloilolow-cost sensorsWestern Visayas, Philippines
    1233.0×
  70. 70GranbyQuebec, Canada
    1233.0×
  71. 72TonkRajasthan, India
    1222.9×
  72. 73JodaOdisha, India
    1202.9×
  73. 74Port HuronMichigan, United States
    1202.9×
  74. 75RasapūdipalemAndhra Pradesh, India
    1182.8×
  75. 75CuddaloreTamil Nadu, India
    1182.8×
  76. 77Puerto VarasLos Lagos Region, Chile
    1172.8×
  77. 78ZionIllinois, United States
    1172.8×
  78. 80RockfordIllinois, United States
    1152.8×
  79. 81QuilpuéValparaiso, Chile
    1152.7×
  80. 81KalamazooMichigan, United States
    1152.7×
  81. 83DorvalQuebec, Canada
    1142.7×
  82. 84RancaguaO'Higgins Region, Chile
    1142.7×
  83. 85AnkleshwarGujarat, India
    1142.7×
  84. 86ChāndaMaharashtra, India
    1132.7×
  85. 87CaryIllinois, United States
    1132.7×
  86. 87KingstonOntario, Canada
    1132.7×
  87. 89St. CatharinesOntario, Canada
    1122.7×
  88. 90JaipurRajasthan, India
    1122.7×
  89. 91HollandMichigan, United States
    1122.7×
  90. 91Sorel-TracyQuebec, Canada
    1122.7×
  91. 93SuperiorWisconsin, United States
    1102.6×
  92. 94ChillánÑuble, Chile
    1102.6×
  93. 95ElginIllinois, United States
    1102.6×
  94. 95MankatoMinnesota, United States
    1102.6×
  95. 95CornwallOntario, Canada
    1102.6×
  96. 95SherbrookeQuebec, Canada
    1102.6×
  97. 99L'Ancienne-LoretteQuebec, Canada
    1092.6×
  98. 100MarquetteMichigan, United States
    1092.6×
  99. 101SantiagoSantiago Metropolitan, Chile
    1092.6×
  100. 102Franklin ParkIllinois, United States
    1082.6×
  101. 102MontréalQuebec, Canada
    1082.6×
  102. 104MadisonWisconsin, United States
    1082.5×
  103. 105Des PlainesIllinois, United States
    1072.5×
  104. 106AnantapurAndhra Pradesh, India
    1072.5×
  105. 107BuxarBihar, India
    1072.5×
  106. 108BrossardQuebec, Canada
    1062.5×
  107. 109Eau ClaireWisconsin, United States
    1052.5×
  108. 110VijayawadaAndhra Pradesh, India
    1052.5×
  109. 110CoronelBiobio, Chile
    1052.5×
  110. 112QuébecQuebec, Canada
    1052.5×
  111. 113ShawiniganQuebec, Canada
    1042.5×
  112. 114Multanlow-cost sensorsPunjab, Pakistan
    1042.5×
  113. 114CuranilahueBiobio, Chile
    1042.5×
  114. 116BuffaloNew York, United States
    1032.4×
  115. 117DrummondvilleQuebec, Canada
    1032.4×
  116. 117MandideepMadhya Pradesh, India
    1032.4×
  117. 119HualquiBiobio, Chile
    1032.4×
  118. 119Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    1032.4×
  119. 121RochesterNew York, United States
    1022.4×
  120. 122Trois-RivièresQuebec, Canada
    1022.4×
  121. 123MalegaonMaharashtra, India
    1022.4×
  122. 123Puente AltoSantiago Metropolitan, Chile
    1022.4×
  123. 125Temalow-cost sensorsGreater Accra, Ghana
    1012.4×
  124. 126Saint-Jean-sur-RichelieuQuebec, Canada
    992.3×
  125. 127SaugorMadhya Pradesh, India
    992.3×
  126. 127BhiwadiRajasthan, India
    992.3×
  127. 129JhānsiUttar Pradesh, India
    992.3×
  128. 130SouthfieldMichigan, United States
    992.3×
  129. 131LudhianaPunjab, India
    982.3×
  130. 131San Pedro de la PazBiobio, Chile
    982.3×
  131. 133DausaRajasthan, India
    982.3×
  132. 134NandedMaharashtra, India
    972.3×
  133. 134DhuleMaharashtra, India
    972.3×
  134. 134Elmwood ParkIllinois, United States
    972.3×
  135. 137EisenGyeongsangbuk-do, South Korea
    972.3×
  136. 137Ganghwa-gunIncheon, South Korea
    972.3×
  137. 137ConcepciónBiobio, Chile
    972.3×
  138. 137BrookfieldIllinois, United States
    972.3×
  139. 141ChicagoIllinois, United States
    972.2×
  140. 142NagaonAssam, India
    962.2×
  141. 143Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    962.2×
  142. 143DushanbeDushanbe, Tajikistan
    962.2×
  143. 145ChiguayanteBiobio, Chile
    962.2×
  144. 146QuthbullapurTelangana, India
    952.2×
  145. 147BaripādaOdisha, India
    952.2×
  146. 148BridgeviewIllinois, United States
    942.1×
  147. 149TirumalaAndhra Pradesh, India
    942.1×
  148. 149Puerto MonttLos Lagos Region, Chile
    942.1×
  149. 151ChittorgarhRajasthan, India
    942.1×
  150. 151BadlapurMaharashtra, India
    942.1×
  151. 153BhelaiChhattisgarh, India
    932.1×
  152. 154PithampurMadhya Pradesh, India
    932.1×
  153. 155Rawalpindilow-cost sensorsPunjab, Pakistan
    932.1×
  154. 155AuroraIllinois, United States
    932.1×
  155. 155NapervilleIllinois, United States
    932.1×
  156. 158VrindāvanUttar Pradesh, India
    922.1×
  157. 158DuluthMinnesota, United States
    922.1×
  158. 160SaharsaBihar, India
    922.1×
  159. 161RedfordMichigan, United States
    922.1×
  160. 162Saint CloudMinnesota, United States
    912.1×
  161. 163KalyānMaharashtra, India
    912.0×
  162. 163CauquenesMaule Region, Chile
    912.0×
  163. 165NalbāriAssam, India
    902.0×
  164. 166BawānaDelhi, India
    902.0×
  165. 166DavenportIowa, United States
    902.0×
  166. 168TiruchirappalliTamil Nadu, India
    902.0×
  167. 168AjmerRajasthan, India
    902.0×
  168. 168IncheonIncheon, South Korea
    902.0×
  169. 168Chrang Chamreh Muoylow-cost sensorsPhnom Penh, Cambodia
    902.0×
  170. 172La UniónLos Ríos Region, Chile
    902.0×
  171. 173MolineIllinois, United States
    892.0×
  172. 174RourkelaOdisha, India
    892.0×
  173. 175Dubailow-cost sensorsDubai, United Arab Emirates
    892.0×
  174. 176MorādābādUttar Pradesh, India
    892.0×
  175. 176SyracuseNew York, United States
    892.0×
  176. 178LoniUttar Pradesh, India
    881.9×
  177. 179NagpurMaharashtra, India
    881.9×
  178. 180DoltonIllinois, United States
    881.9×
  179. 180Saint MichaelMinnesota, United States
    881.9×
  180. 182CopiapóAtacama, Chile
    881.9×
  181. 182ClintonIowa, United States
    881.9×
  182. 182Michigan CityIndiana, United States
    881.9×
  183. 185ChūruRajasthan, India
    881.9×
  184. 186TocopillaAntofagasta, Chile
    871.9×
  185. 186Los ÁngelesBiobio, Chile
    871.9×
  186. 186HammondIndiana, United States
    871.9×
  187. 186ReginaSaskatchewan, Canada
    871.9×
  188. 190SantyokuGangwon-do, South Korea
    871.9×
  189. 190HayangGyeongsangbuk-do, South Korea
    871.9×
  190. 192WŏnjuGangwon-do, South Korea
    871.9×
  191. 192Gimpo-siGyeonggi-do, South Korea
    871.9×
  192. 194GwaliorMadhya Pradesh, India
    871.9×
  193. 195Islamabadlow-cost sensorsIslamabad, Pakistan
    861.9×
  194. 195ValdiviaLos Ríos Region, Chile
    861.9×
  195. 197Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    861.9×
  196. 197KalaburagiKarnataka, India
    861.9×
  197. 197BarbilOdisha, India
    861.9×
  198. 200PanvelMaharashtra, India
    861.9×

Top 200 of 2,555 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, 2025, smogrank.com/history/2025-08-03 (accessed 2 Oct 2026).

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