SmogRank / Countries / Canada / January 2025

Most polluted cities in Canada, January 2025

91 cities in Canada ranked by their average PM2.5 over the 31 days. Worst: Sorel-Tracy at 11.3 µg/m³, #550 of 1,937 cities in the world. Cleanest: Airdrie at 2.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Sorel-TracyQuebec
    11.3
  2. 2Port AlberniBritish Columbia
    10.9
  3. 3CranbrookBritish Columbia
    10.1
  4. 4Prince GeorgeBritish Columbia
    10.0
  5. 5L'Ancienne-LoretteQuebec
    9.9
  6. 6DuncanBritish Columbia
    9.5
  7. 7VernonBritish Columbia
    9.0
  8. 7WindsorOntario
    9.0
  9. 9LangfordBritish Columbia
    8.4
  10. 10EdmontonAlberta
    8.3
  11. 11KamloopsBritish Columbia
    8.2
  12. 12VictoriaBritish Columbia
    8.0
  13. 13Trois-RivièresQuebec
    7.9
  14. 13QuébecQuebec
    7.9
  15. 15ShawiniganQuebec
    7.8
  16. 16TorontoOntario
    7.4
  17. 17CalgaryAlberta
    7.3
  18. 17HamiltonOntario
    7.3
  19. 19VancouverBritish Columbia
    7.1
  20. 20RichmondBritish Columbia
    7.0
  21. 20Sherwood ParkAlberta
    7.0
  22. 22BrossardQuebec
    6.9
  23. 23WaterdownOntario
    6.8
  24. 24BrantfordOntario
    6.7
  25. 24DrummondvilleQuebec
    6.7
  26. 24GranbyQuebec
    6.7
  27. 24Rivière-des-Prairies–Pointe-aux-TremblesQuebec
    6.7
  28. 28MiltonOntario
    6.6
  29. 28SarniaOntario
    6.6
  30. 30LondonOntario
    6.5
  31. 30MontréalQuebec
    6.5
  32. 30Red DeerAlberta
    6.5
  33. 30SherbrookeQuebec
    6.5
  34. 30St. AlbertAlberta
    6.5
  35. 35St. ThomasOntario
    6.4
  36. 36EdmundstonNew Brunswick
    6.3
  37. 37KelownaBritish Columbia
    6.2
  38. 37NewmarketOntario
    6.2
  39. 37OakvilleOntario
    6.2
  40. 40KitchenerOntario
    6.1
  41. 40North CowichanBritish Columbia
    6.1
  42. 40Strawberry HillBritish Columbia
    6.1
  43. 43ChathamOntario
    6.0
  44. 43LangleyBritish Columbia
    6.0
  45. 45MississaugaOntario
    5.9
  46. 46BarrieOntario
    5.8
  47. 46GuelphOntario
    5.8
  48. 46SaguenayQuebec
    5.8
  49. 49DorvalQuebec
    5.7
  50. 49St. CatharinesOntario
    5.7
  51. 51MissionBritish Columbia
    5.6
  52. 52BramptonOntario
    5.5
  53. 53AbbotsfordBritish Columbia
    5.4
  54. 53OttawaOntario
    5.4
  55. 53PeterboroughOntario
    5.4
  56. 53Rouyn-NorandaQuebec
    5.4
  57. 53WhitehorseYukon
    5.4
  58. 58Campbell RiverBritish Columbia
    5.3
  59. 59BurnabyBritish Columbia
    5.2
  60. 59CoquitlamBritish Columbia
    5.2
  61. 59Port CoquitlamBritish Columbia
    5.2
  62. 62AllistonOntario
    5.1
  63. 62Grande PrairieAlberta
    5.1
  64. 64FrederictonNew Brunswick
    5.0
  65. 64Medicine HatAlberta
    5.0
  66. 66BellevilleOntario
    4.9
  67. 66SquamishBritish Columbia
    4.9
  68. 66TerraceBritish Columbia
    4.9
  69. 69ChilliwackBritish Columbia
    4.8
  70. 69NanaimoBritish Columbia
    4.8
  71. 69Saint-Jean-sur-RichelieuQuebec
    4.8
  72. 72LethbridgeAlberta
    4.7
  73. 73DeltaBritish Columbia
    4.6
  74. 73ReginaSaskatchewan
    4.6
  75. 75KingstonOntario
    4.4
  76. 75Saint JohnNew Brunswick
    4.4
  77. 77Fort McMurrayAlberta
    4.3
  78. 77Greater SudburyOntario
    4.3
  79. 77North VancouverBritish Columbia
    4.3
  80. 80MonctonNew Brunswick
    4.2
  81. 81SaskatoonSaskatchewan
    4.1
  82. 81Swift CurrentSaskatchewan
    4.1
  83. 83Fort St. JohnBritish Columbia
    4.0
  84. 83North BayOntario
    4.0
  85. 85Prince AlbertSaskatchewan
    3.6
  86. 86Sault Ste. MarieOntario
    3.5
  87. 87CharlottetownPrince Edward Island
    3.2
  88. 88MiramichiNew Brunswick
    3.1
  89. 88West VancouverBritish Columbia
    3.1
  90. 90DartmouthNova Scotia
    3.0
  91. 91AirdrieAlberta
    2.9
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, January 2025 · Canada now