SmogRank / World / Canada / September 2026
Most polluted cities in Canada, September 2026
96 cities in Canada ranked by their average PM2.5 over the 30 days. Worst: Kamloops at 8.4 µg/m³, #565 of 2,330 cities in the world. Cleanest: Yellowknife at 0.5. A city needs measurements on 70% of the days to be ranked.
← Kamloops 8.4
- 1KamloopsBritish Columbia 8.4
- 2ChilliwackBritish Columbia 7.5
- 3EdmontonAlberta 7.3
- 3Red DeerAlberta 7.3
- 3VernonBritish Columbia 7.3
- 6CalgaryAlberta 7.1
- 6Prince GeorgeBritish Columbia 7.1
- 8AbbotsfordBritish Columbia 6.8
- 9KelownaBritish Columbia 6.5
- 10HarewoodBritish Columbia 6.2
- 11Sorel-TracyQuebec 6.1
- 11SquamishBritish Columbia 6.1
- 13L'Ancienne-LoretteQuebec 6.0
- 14VancouverBritish Columbia 5.9
- 15HamiltonOntario 5.8
- 15Strawberry HillBritish Columbia 5.8
- 15WindsorOntario 5.8
- 18BrantfordOntario 5.7
- 19BarrieOntario 5.6
- 19DuncanBritish Columbia 5.6
- 19LangleyBritish Columbia 5.6
- 19NewmarketOntario 5.6
- 19VictoriaBritish Columbia 5.6
- 24AirdrieAlberta 5.5
- 24CornwallOntario 5.5
- 24CranbrookBritish Columbia 5.5
- 24RichmondBritish Columbia 5.5
- 24TorontoOntario 5.5
- 29BurnabyBritish Columbia 5.4
- 29LondonOntario 5.4
- 29MontréalQuebec 5.4
- 29Nepeanlow-cost sensorsOntario 5.4
- 29ShawiniganQuebec 5.4
- 29St. ThomasOntario 5.4
- 35BrossardQuebec 5.3
- 35CoquitlamBritish Columbia 5.3
- 35DeltaBritish Columbia 5.3
- 35LangfordBritish Columbia 5.3
- 35LethbridgeAlberta 5.3
- 40GuelphOntario 5.2
- 40KitchenerOntario 5.2
- 40OakvilleOntario 5.2
- 40Saint-Jean-sur-RichelieuQuebec 5.2
- 40Rivière-des-Prairies–Pointe-aux-TremblesQuebec 5.2
- 45MiltonOntario 5.1
- 45SaskatoonSaskatchewan 5.1
- 45St. CatharinesOntario 5.1
- 48North VancouverBritish Columbia 5.0
- 48Port CoquitlamBritish Columbia 5.0
- 48SarniaOntario 5.0
- 48Sherwood ParkAlberta 5.0
- 48Trois-RivièresQuebec 5.0
- 48WaterdownOntario 5.0
- 48QuébecQuebec 5.0
- 48Saint-GeorgesQuebec 5.0
- 56BramptonOntario 4.9
- 56Fort St. JohnBritish Columbia 4.9
- 56GranbyQuebec 4.9
- 56NanaimoBritish Columbia 4.9
- 56St. AlbertAlberta 4.9
- 61Greater SudburyOntario 4.8
- 62ChathamOntario 4.7
- 62Medicine HatAlberta 4.7
- 62ReginaSaskatchewan 4.7
- 65DrummondvilleQuebec 4.6
- 66Grande PrairieAlberta 4.5
- 66West VancouverBritish Columbia 4.5
- 68BellevilleOntario 4.4
- 68MississaugaOntario 4.4
- 70AllistonOntario 4.3
- 70KingstonOntario 4.3
- 70OttawaOntario 4.3
- 73North BayOntario 4.2
- 73SaguenayQuebec 4.2
- 73SherbrookeQuebec 4.2
- 73Swift CurrentSaskatchewan 4.2
- 73EdmundstonNew Brunswick 4.2
- 78TerraceBritish Columbia 4.1
- 79Fort McMurrayAlberta 4.0
- 79Rouyn-NorandaQuebec 4.0
- 81Campbell RiverBritish Columbia 3.9
- 82Sept-ÎlesQuebec 3.8
- 83PeterboroughOntario 3.7
- 83Sault Ste. MarieOntario 3.7
- 85Saint JohnNew Brunswick 3.6
- 86MonctonNew Brunswick 3.3
- 87CharlottetownPrince Edward Island 3.2
- 87FrederictonNew Brunswick 3.2
- 87Gatineaulow-cost sensorsQuebec 3.2
- 90Winnipeglow-cost sensorsManitoba 3.1
- 91MiramichiNew Brunswick 3.0
- 91North CowichanBritish Columbia 3.0
- 93DartmouthNova Scotia 2.9
- 94WhitehorseYukon 2.8
- 94SydneyNova Scotia 2.8
- 96Yellowknifelow-cost sensorsNorthwest Territories 0.5
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, September 2026 · Canada now
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SmogRank, most polluted cities in Canada, PM2.5, September 2026, smogrank.com/ca/history/2026-09 (accessed 2 Oct 2026).
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