SmogRank / Countries / Canada / January 2026

Most polluted cities in Canada, January 2026

88 cities in Canada ranked by their average PM2.5 over the 31 days. Worst: Windsor at 11.5 µg/m³, #642 of 2,047 cities in the world. Cleanest: Yellowknife at 2.1. A city needs measurements on 70% of the days to be ranked.

  1. 1WindsorOntario
    11.5
  2. 2EdmontonAlberta
    11.2
  3. 3DrummondvilleQuebec
    10.8
  4. 4L'Ancienne-LoretteQuebec
    10.2
  5. 5Port AlberniBritish Columbia
    10.0
  6. 6Sorel-TracyQuebec
    9.7
  7. 7Gatineaulow-cost sensorsQuebec
    9.4
  8. 7Red DeerAlberta
    9.4
  9. 9Nepeanlow-cost sensorsOntario
    9.3
  10. 10CalgaryAlberta
    9.1
  11. 11Trois-RivièresQuebec
    9.0
  12. 12HarewoodBritish Columbia
    8.8
  13. 13KamloopsBritish Columbia
    8.7
  14. 14GranbyQuebec
    8.5
  15. 14QuébecQuebec
    8.5
  16. 14Rivière-des-Prairies–Pointe-aux-TremblesQuebec
    8.5
  17. 17St. AlbertAlberta
    8.4
  18. 18MontréalQuebec
    8.3
  19. 19BrossardQuebec
    8.2
  20. 20ShawiniganQuebec
    8.0
  21. 21DorvalQuebec
    7.6
  22. 21EdmundstonNew Brunswick
    7.6
  23. 23Campbell RiverBritish Columbia
    7.4
  24. 23Sherwood ParkAlberta
    7.4
  25. 25KingstonOntario
    7.2
  26. 25OttawaOntario
    7.2
  27. 25TorontoOntario
    7.2
  28. 28WaterdownOntario
    7.1
  29. 29LondonOntario
    7.0
  30. 30CornwallOntario
    6.9
  31. 30MiltonOntario
    6.9
  32. 30SarniaOntario
    6.9
  33. 33SherbrookeQuebec
    6.8
  34. 34BrantfordOntario
    6.7
  35. 34HamiltonOntario
    6.7
  36. 34NewmarketOntario
    6.7
  37. 37GuelphOntario
    6.6
  38. 38KitchenerOntario
    6.4
  39. 39BellevilleOntario
    6.3
  40. 39ChathamOntario
    6.3
  41. 41OakvilleOntario
    6.2
  42. 41TerraceBritish Columbia
    6.2
  43. 41VancouverBritish Columbia
    6.2
  44. 44MississaugaOntario
    6.1
  45. 44St. CatharinesOntario
    6.1
  46. 44Strawberry HillBritish Columbia
    6.1
  47. 47Saint-Jean-sur-RichelieuQuebec
    6.0
  48. 48RichmondBritish Columbia
    5.9
  49. 49PeterboroughOntario
    5.7
  50. 49St. ThomasOntario
    5.7
  51. 51AllistonOntario
    5.6
  52. 51BarrieOntario
    5.6
  53. 51BramptonOntario
    5.6
  54. 51BurnabyBritish Columbia
    5.6
  55. 51SaguenayQuebec
    5.6
  56. 56Medicine HatAlberta
    5.5
  57. 56North CowichanBritish Columbia
    5.5
  58. 56WhitehorseYukon
    5.5
  59. 59ReginaSaskatchewan
    5.4
  60. 60LangleyBritish Columbia
    5.3
  61. 61AirdrieAlberta
    4.9
  62. 61Rouyn-NorandaQuebec
    4.9
  63. 61SaskatoonSaskatchewan
    4.9
  64. 64Fort St. JohnBritish Columbia
    4.7
  65. 64Greater SudburyOntario
    4.7
  66. 64LethbridgeAlberta
    4.7
  67. 64Prince AlbertSaskatchewan
    4.7
  68. 64Sept-ÎlesQuebec
    4.7
  69. 69AbbotsfordBritish Columbia
    4.6
  70. 69Saint JohnNew Brunswick
    4.6
  71. 71CoquitlamBritish Columbia
    4.5
  72. 71Fort McMurrayAlberta
    4.5
  73. 71FrederictonNew Brunswick
    4.5
  74. 71MonctonNew Brunswick
    4.5
  75. 75North BayOntario
    4.4
  76. 75Port CoquitlamBritish Columbia
    4.4
  77. 77ChilliwackBritish Columbia
    4.1
  78. 77DeltaBritish Columbia
    4.1
  79. 77MiramichiNew Brunswick
    4.1
  80. 80MissionBritish Columbia
    4.0
  81. 80North VancouverBritish Columbia
    4.0
  82. 82Sault Ste. MarieOntario
    3.9
  83. 82Swift CurrentSaskatchewan
    3.9
  84. 84SydneyNova Scotia
    3.7
  85. 85DartmouthNova Scotia
    3.4
  86. 86CharlottetownPrince Edward Island
    3.3
  87. 87West VancouverBritish Columbia
    3.1
  88. 88Yellowknifelow-cost sensorsNorthwest Territories
    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, January 2026 · Canada now