SmogRank / World / Canada / July 2023

Most polluted cities in Canada, July 2023

80 cities in Canada ranked by their average PM2.5 over the 31 days. Worst: Fort McMurray at 38.5 µg/m³, #4 of 1,110 cities in the world. Cleanest: Campbell River at 1.4. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for one of these days. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

← Fort McMurray 38.5 µg/m³ 30 µg/m³0
Every city in Canada ranked for July 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Fort McMurrayAlberta
    4
  2. 2EdmontonAlberta
    4
  3. 3Fort St. JohnBritish Columbia
    3
  4. 4Grande PrairieAlberta
    3
  5. 5Prince GeorgeBritish Columbia
    3
  6. 6Red DeerAlberta
    2
  7. 7St. AlbertAlberta
    2
  8. 8KamloopsBritish Columbia
    2
  9. 9CalgaryAlberta
    2
  10. 10L'Ancienne-LoretteQuebec
    2
  11. 11SaguenayQuebec
    2
  12. 12Medicine HatAlberta
    2
  13. 13AirdrieAlberta
    2
  14. 14BarrieOntario
    2
  15. 15Sherwood ParkAlberta
    2
  16. 16GranbyQuebec
    2
  17. 17BrossardQuebec
    2
  18. 17KingstonOntario
    2
  19. 17QuébecQuebec
    2
  20. 20CornwallOntario
    2
  21. 21HamiltonOntario
    2
  22. 22LondonOntario
    2
  23. 23DrummondvilleQuebec
    2
  24. 23KitchenerOntario
    2
  25. 23MontréalQuebec
    2
  26. 23SarniaOntario
    2
  27. 27BrantfordOntario
    2
  28. 27PeterboroughOntario
    2
  29. 27ShawiniganQuebec
    2
  30. 30OttawaOntario
    2
  31. 31LethbridgeAlberta
    2
  32. 31Rivière-des-Prairies–Pointe-aux-TremblesQuebec
    2
  33. 33CranbrookBritish Columbia
    2
  34. 34BellevilleOntario
    1
  35. 34TorontoOntario
    1
  36. 36St. ThomasOntario
    1
  37. 37St. CatharinesOntario
    1
  38. 38Saint-Jean-sur-RichelieuQuebec
    1
  39. 39BrandonManitoba
    1
  40. 40ChathamOntario
    1
  41. 40DorvalQuebec
    1
  42. 40Greater SudburyOntario
    1
  43. 43North BayOntario
    1
  44. 44EdmundstonNew Brunswick
    1
  45. 45WhitehorseYukon
    1
  46. 46VernonBritish Columbia
    1
  47. 47Sault Ste. MarieOntario
    1
  48. 48St. John'sNewfoundland and Labrador
    1
  49. 49MiramichiNew Brunswick
    1
  50. 49MonctonNew Brunswick
    1
  51. 51FrederictonNew Brunswick
    1
  52. 52KelownaBritish Columbia
    1
  53. 53Saint JohnNew Brunswick
    1
  54. 53SquamishBritish Columbia
    1
  55. 55TerraceBritish Columbia
    1
  56. 56ChilliwackBritish Columbia
    1
  57. 56PentictonBritish Columbia
    1
  58. 58CharlottetownPrince Edward Island
    1
  59. 59CoquitlamBritish Columbia
    1
  60. 59VictoriaBritish Columbia
    1
  61. 61Mount PearlNewfoundland and Labrador
    1
  62. 61Strawberry HillBritish Columbia
    1
  63. 63Corner BrookNewfoundland and Labrador
    1
  64. 64AbbotsfordBritish Columbia
    1
  65. 65BurnabyBritish Columbia
    1
  66. 65Port CoquitlamBritish Columbia
    1
  67. 67LangfordBritish Columbia
    1
  68. 67West VancouverBritish Columbia
    1
  69. 69LangleyBritish Columbia
    1
  70. 70HarewoodBritish Columbia
    1
  71. 71NanaimoBritish Columbia
    1
  72. 71North VancouverBritish Columbia
    1
  73. 71RichmondBritish Columbia
    1
  74. 71VancouverBritish Columbia
    1
  75. 75DuncanBritish Columbia
    1
  76. 76DeltaBritish Columbia
    1
  77. 76Port AlberniBritish Columbia
    1
  78. 78CourtenayBritish Columbia
    1
  79. 79North CowichanBritish Columbia
    1
  80. 80Campbell RiverBritish Columbia
    1
Low1–3
Moderate4–6
High7–9
Very high10

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, July 2023 · Canada now

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SmogRank, most polluted cities in Canada, PM2.5, July 2023, smogrank.com/ca/history/2023-07 (accessed 2 Oct 2026).

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