SmogRank / Countries / Canada / August 2026

Most polluted cities in Canada, August 2026

98 cities in Canada ranked by their average PM2.5 over the 31 days. Worst: Kamloops at 44.1 µg/m³, #18 of 2,312 cities in the world. Cleanest: Campbell River at 2.7. A city needs measurements on 70% of the days to be ranked.

  1. 1KamloopsBritish Columbia
    44.1
  2. 2VernonBritish Columbia
    37.1
  3. 3CranbrookBritish Columbia
    28.2
  4. 4KelownaBritish Columbia
    23.4
  5. 5LethbridgeAlberta
    18.1
  6. 6CalgaryAlberta
    17.3
  7. 7ChilliwackBritish Columbia
    16.8
  8. 8AirdrieAlberta
    14.3
  9. 9Swift CurrentSaskatchewan
    13.9
  10. 10Medicine HatAlberta
    13.3
  11. 11Red DeerAlberta
    12.5
  12. 12ReginaSaskatchewan
    12.3
  13. 13SaskatoonSaskatchewan
    12.2
  14. 14EdmontonAlberta
    12.0
  15. 15SquamishBritish Columbia
    11.5
  16. 16Nepeanlow-cost sensorsOntario
    11.0
  17. 17Fort McMurrayAlberta
    10.5
  18. 18AbbotsfordBritish Columbia
    10.2
  19. 19L'Ancienne-LoretteQuebec
    9.9
  20. 20North VancouverBritish Columbia
    9.6
  21. 20Prince AlbertSaskatchewan
    9.6
  22. 22CoquitlamBritish Columbia
    9.5
  23. 23Sherwood ParkAlberta
    9.4
  24. 24St. AlbertAlberta
    9.2
  25. 25Yellowknifelow-cost sensorsNorthwest Territories
    9.1
  26. 26Grande PrairieAlberta
    9.0
  27. 27WindsorOntario
    8.9
  28. 28Port CoquitlamBritish Columbia
    8.7
  29. 29Winnipeglow-cost sensorsManitoba
    8.5
  30. 30BurnabyBritish Columbia
    8.3
  31. 30West VancouverBritish Columbia
    8.3
  32. 32Fort St. JohnBritish Columbia
    8.2
  33. 33MiltonOntario
    8.1
  34. 33SarniaOntario
    8.1
  35. 35ShawiniganQuebec
    8.0
  36. 36LangleyBritish Columbia
    7.7
  37. 36Sorel-TracyQuebec
    7.7
  38. 38TorontoOntario
    7.6
  39. 39LondonOntario
    7.5
  40. 39NewmarketOntario
    7.5
  41. 39Port AlberniBritish Columbia
    7.5
  42. 42HamiltonOntario
    7.4
  43. 42St. ThomasOntario
    7.4
  44. 44ChathamOntario
    7.2
  45. 44VancouverBritish Columbia
    7.2
  46. 44QuébecQuebec
    7.2
  47. 47BarrieOntario
    7.1
  48. 47BrantfordOntario
    7.1
  49. 47GuelphOntario
    7.1
  50. 47KitchenerOntario
    7.1
  51. 47OakvilleOntario
    7.1
  52. 47Sept-ÎlesQuebec
    7.1
  53. 47Saint-GeorgesQuebec
    7.1
  54. 54Prince GeorgeBritish Columbia
    7.0
  55. 54WaterdownOntario
    7.0
  56. 56Strawberry HillBritish Columbia
    6.9
  57. 57BramptonOntario
    6.8
  58. 58BellevilleOntario
    6.7
  59. 59HarewoodBritish Columbia
    6.6
  60. 60BrossardQuebec
    6.5
  61. 61Trois-RivièresQuebec
    6.4
  62. 62MississaugaOntario
    6.3
  63. 63GranbyQuebec
    6.2
  64. 63KingstonOntario
    6.2
  65. 63St. CatharinesOntario
    6.2
  66. 66EdmundstonNew Brunswick
    6.1
  67. 67AllistonOntario
    6.0
  68. 67CornwallOntario
    6.0
  69. 67DuncanBritish Columbia
    6.0
  70. 67MontréalQuebec
    6.0
  71. 67North BayOntario
    6.0
  72. 72Rivière-des-Prairies–Pointe-aux-TremblesQuebec
    5.9
  73. 73SaguenayQuebec
    5.8
  74. 74Sault Ste. MarieOntario
    5.7
  75. 74VictoriaBritish Columbia
    5.7
  76. 76MiramichiNew Brunswick
    5.6
  77. 76OttawaOntario
    5.6
  78. 76RichmondBritish Columbia
    5.6
  79. 76Saint-Jean-sur-RichelieuQuebec
    5.6
  80. 76Saint JohnNew Brunswick
    5.6
  81. 81DeltaBritish Columbia
    5.4
  82. 81DrummondvilleQuebec
    5.4
  83. 81SherbrookeQuebec
    5.4
  84. 84LangfordBritish Columbia
    5.3
  85. 85Gatineaulow-cost sensorsQuebec
    5.2
  86. 85Greater SudburyOntario
    5.2
  87. 85MonctonNew Brunswick
    5.2
  88. 85NanaimoBritish Columbia
    5.2
  89. 85PeterboroughOntario
    5.2
  90. 90Rouyn-NorandaQuebec
    5.1
  91. 91FrederictonNew Brunswick
    5.0
  92. 92DartmouthNova Scotia
    4.8
  93. 93CharlottetownPrince Edward Island
    4.5
  94. 94TerraceBritish Columbia
    4.3
  95. 95North CowichanBritish Columbia
    4.2
  96. 95SydneyNova Scotia
    4.2
  97. 97WhitehorseYukon
    4.1
  98. 98Campbell RiverBritish Columbia
    2.7
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, August 2026 · Canada now