SmogRank / Countries / Canada / November 2025

Most polluted cities in Canada, November 2025

90 cities in Canada ranked by their average PM2.5 over the 30 days. Worst: Edmonton at 12.6 µg/m³, #463 of 2,173 cities in the world. Cleanest: Sault Ste. Marie at 2.1. A city needs measurements on 70% of the days to be ranked.

  1. 1EdmontonAlberta
    12.6
  2. 2WindsorOntario
    10.2
  3. 3VernonBritish Columbia
    9.9
  4. 4CalgaryAlberta
    9.4
  5. 5Red DeerAlberta
    9.0
  6. 6Sherwood ParkAlberta
    8.5
  7. 7St. AlbertAlberta
    8.2
  8. 8Port AlberniBritish Columbia
    8.0
  9. 9KelownaBritish Columbia
    7.7
  10. 10Prince GeorgeBritish Columbia
    7.5
  11. 11HarewoodBritish Columbia
    6.9
  12. 12SaskatoonSaskatchewan
    6.6
  13. 13LethbridgeAlberta
    6.2
  14. 14Medicine HatAlberta
    5.7
  15. 15Gatineaulow-cost sensorsQuebec
    5.6
  16. 15Nepeanlow-cost sensorsOntario
    5.6
  17. 15L'Ancienne-LoretteQuebec
    5.6
  18. 18Fort St. JohnBritish Columbia
    5.4
  19. 18LondonOntario
    5.4
  20. 18VictoriaBritish Columbia
    5.4
  21. 21GranbyQuebec
    5.3
  22. 21LangfordBritish Columbia
    5.3
  23. 21WhitehorseYukon
    5.3
  24. 21Rivière-des-Prairies–Pointe-aux-TremblesQuebec
    5.3
  25. 25BrantfordOntario
    5.2
  26. 25MontréalQuebec
    5.2
  27. 25TorontoOntario
    5.2
  28. 28RichmondBritish Columbia
    5.1
  29. 28TerraceBritish Columbia
    5.1
  30. 30AirdrieAlberta
    5.0
  31. 30Campbell RiverBritish Columbia
    5.0
  32. 30NanaimoBritish Columbia
    5.0
  33. 30SarniaOntario
    5.0
  34. 30Trois-RivièresQuebec
    5.0
  35. 35OttawaOntario
    4.9
  36. 35QuébecQuebec
    4.9
  37. 37LangleyBritish Columbia
    4.8
  38. 37MiltonOntario
    4.8
  39. 37Prince AlbertSaskatchewan
    4.8
  40. 37VancouverBritish Columbia
    4.8
  41. 41BrossardQuebec
    4.7
  42. 41DorvalQuebec
    4.7
  43. 41HamiltonOntario
    4.7
  44. 41KitchenerOntario
    4.7
  45. 41ShawiniganQuebec
    4.7
  46. 46DrummondvilleQuebec
    4.6
  47. 47WaterdownOntario
    4.5
  48. 48GuelphOntario
    4.4
  49. 48St. CatharinesOntario
    4.4
  50. 50ChilliwackBritish Columbia
    4.2
  51. 50DeltaBritish Columbia
    4.2
  52. 50MississaugaOntario
    4.2
  53. 50NewmarketOntario
    4.2
  54. 50OakvilleOntario
    4.2
  55. 50Strawberry HillBritish Columbia
    4.2
  56. 56AbbotsfordBritish Columbia
    4.1
  57. 56MissionBritish Columbia
    4.1
  58. 56St. ThomasOntario
    4.1
  59. 56Swift CurrentSaskatchewan
    4.1
  60. 60BramptonOntario
    4.0
  61. 60BurnabyBritish Columbia
    4.0
  62. 60CornwallOntario
    4.0
  63. 63BarrieOntario
    3.9
  64. 63Fort McMurrayAlberta
    3.9
  65. 63SherbrookeQuebec
    3.9
  66. 63Yellowknifelow-cost sensorsNorthwest Territories
    3.9
  67. 63EdmundstonNew Brunswick
    3.9
  68. 68CoquitlamBritish Columbia
    3.8
  69. 69BellevilleOntario
    3.6
  70. 69CharlottetownPrince Edward Island
    3.6
  71. 69MonctonNew Brunswick
    3.6
  72. 69SquamishBritish Columbia
    3.6
  73. 73Port CoquitlamBritish Columbia
    3.5
  74. 74KingstonOntario
    3.4
  75. 74Saint-Jean-sur-RichelieuQuebec
    3.4
  76. 76North VancouverBritish Columbia
    3.3
  77. 76PeterboroughOntario
    3.3
  78. 76Saint JohnNew Brunswick
    3.3
  79. 76SydneyNova Scotia
    3.3
  80. 80Winnipeglow-cost sensorsManitoba
    3.1
  81. 81West VancouverBritish Columbia
    3.0
  82. 82FrederictonNew Brunswick
    2.9
  83. 83DartmouthNova Scotia
    2.8
  84. 83SaguenayQuebec
    2.8
  85. 85MiramichiNew Brunswick
    2.5
  86. 85North BayOntario
    2.5
  87. 87Greater SudburyOntario
    2.4
  88. 88Rouyn-NorandaQuebec
    2.3
  89. 88Sept-ÎlesQuebec
    2.3
  90. 90Sault Ste. MarieOntario
    2.1
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, November 2025 · Canada now