SmogRank / Countries / Canada / February 2026

Most polluted cities in Canada, February 2026

94 cities in Canada ranked by their average PM2.5 over the 28 days. Worst: Windsor at 12.8 µg/m³, #601 of 2,251 cities in the world. Cleanest: Yellowknife at 1.9. A city needs measurements on 70% of the days to be ranked.

  1. 1WindsorOntario
    12.8
  2. 2SarniaOntario
    11.9
  3. 3LondonOntario
    11.7
  4. 4L'Ancienne-LoretteQuebec
    11.5
  5. 5MiltonOntario
    10.7
  6. 6ChathamOntario
    10.6
  7. 6TorontoOntario
    10.6
  8. 8BrantfordOntario
    10.5
  9. 9Nepeanlow-cost sensorsOntario
    10.4
  10. 10WaterdownOntario
    10.3
  11. 11HamiltonOntario
    10.2
  12. 12OakvilleOntario
    10.1
  13. 13NewmarketOntario
    10.0
  14. 14St. ThomasOntario
    9.9
  15. 15GuelphOntario
    9.8
  16. 15MississaugaOntario
    9.8
  17. 17KitchenerOntario
    9.7
  18. 18CalgaryAlberta
    9.4
  19. 19GranbyQuebec
    9.3
  20. 20St. CatharinesOntario
    9.2
  21. 21Trois-RivièresQuebec
    8.9
  22. 22BramptonOntario
    8.8
  23. 23DrummondvilleQuebec
    8.7
  24. 24ShawiniganQuebec
    8.5
  25. 24Sorel-TracyQuebec
    8.5
  26. 24QuébecQuebec
    8.5
  27. 27EdmontonAlberta
    8.4
  28. 27Gatineaulow-cost sensorsQuebec
    8.4
  29. 29CornwallOntario
    8.3
  30. 30AllistonOntario
    8.2
  31. 30MontréalQuebec
    8.2
  32. 30Rivière-des-Prairies–Pointe-aux-TremblesQuebec
    8.2
  33. 33BarrieOntario
    7.9
  34. 33SherbrookeQuebec
    7.9
  35. 35BrossardQuebec
    7.7
  36. 36KingstonOntario
    7.6
  37. 37Port AlberniBritish Columbia
    7.5
  38. 37SaguenayQuebec
    7.5
  39. 37EdmundstonNew Brunswick
    7.5
  40. 40BellevilleOntario
    7.3
  41. 40PeterboroughOntario
    7.3
  42. 42OttawaOntario
    7.2
  43. 42Red DeerAlberta
    7.2
  44. 44VernonBritish Columbia
    6.7
  45. 45KamloopsBritish Columbia
    6.6
  46. 46St. AlbertAlberta
    6.1
  47. 47Winnipeglow-cost sensorsManitoba
    5.9
  48. 48ReginaSaskatchewan
    5.8
  49. 48Saint-Jean-sur-RichelieuQuebec
    5.8
  50. 50Grande PrairieAlberta
    5.7
  51. 50Sherwood ParkAlberta
    5.7
  52. 52CranbrookBritish Columbia
    5.6
  53. 53AirdrieAlberta
    5.5
  54. 53KelownaBritish Columbia
    5.5
  55. 55HarewoodBritish Columbia
    5.4
  56. 56Prince AlbertSaskatchewan
    5.2
  57. 56Prince GeorgeBritish Columbia
    5.2
  58. 56SaskatoonSaskatchewan
    5.2
  59. 59Greater SudburyOntario
    5.1
  60. 59North BayOntario
    5.1
  61. 61FrederictonNew Brunswick
    5.0
  62. 62Medicine HatAlberta
    4.9
  63. 62Sault Ste. MarieOntario
    4.9
  64. 62VictoriaBritish Columbia
    4.9
  65. 65Fort McMurrayAlberta
    4.8
  66. 65TerraceBritish Columbia
    4.8
  67. 67Rouyn-NorandaQuebec
    4.7
  68. 68SydneyNova Scotia
    4.5
  69. 69Swift CurrentSaskatchewan
    4.4
  70. 70RichmondBritish Columbia
    4.3
  71. 70WhitehorseYukon
    4.3
  72. 72MonctonNew Brunswick
    4.2
  73. 72Saint JohnNew Brunswick
    4.2
  74. 72VancouverBritish Columbia
    4.2
  75. 75Campbell RiverBritish Columbia
    4.1
  76. 75NanaimoBritish Columbia
    4.1
  77. 77Strawberry HillBritish Columbia
    3.8
  78. 78AbbotsfordBritish Columbia
    3.7
  79. 78LethbridgeAlberta
    3.7
  80. 80LangleyBritish Columbia
    3.6
  81. 80Sept-ÎlesQuebec
    3.6
  82. 82BurnabyBritish Columbia
    3.5
  83. 82Fort St. JohnBritish Columbia
    3.5
  84. 84ChilliwackBritish Columbia
    3.4
  85. 85CoquitlamBritish Columbia
    3.3
  86. 85DeltaBritish Columbia
    3.3
  87. 87MiramichiNew Brunswick
    3.1
  88. 88CharlottetownPrince Edward Island
    3.0
  89. 89Port CoquitlamBritish Columbia
    2.8
  90. 90North VancouverBritish Columbia
    2.7
  91. 91West VancouverBritish Columbia
    2.6
  92. 92North CowichanBritish Columbia
    2.5
  93. 93DartmouthNova Scotia
    1.9
  94. 93Yellowknifelow-cost sensorsNorthwest Territories
    1.9
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, February 2026 · Canada now