SmogRank / Countries / Canada / April 2026
Most polluted cities in Canada, April 2026
96 cities in Canada ranked by their average PM2.5 over the 30 days. Worst: Edmonton at 7.8 µg/m³, #1,224 of 2,283 cities in the world. Cleanest: Yellowknife at 2.6. A city needs measurements on 70% of the days to be ranked.
- 1EdmontonAlberta 7.8
- 2Prince GeorgeBritish Columbia 7.1
- 3HarewoodBritish Columbia 6.7
- 4Sorel-TracyQuebec 6.6
- 5HamiltonOntario 6.4
- 5Red DeerAlberta 6.4
- 7Port AlberniBritish Columbia 6.3
- 8CalgaryAlberta 6.2
- 9VernonBritish Columbia 5.8
- 10MontréalQuebec 5.7
- 10TorontoOntario 5.7
- 10WindsorOntario 5.7
- 13VictoriaBritish Columbia 5.6
- 14AbbotsfordBritish Columbia 5.5
- 14BrantfordOntario 5.5
- 14LangleyBritish Columbia 5.5
- 17ChilliwackBritish Columbia 5.4
- 17DuncanBritish Columbia 5.4
- 17MiltonOntario 5.4
- 20BrossardQuebec 5.3
- 20CranbrookBritish Columbia 5.3
- 20LondonOntario 5.3
- 20ReginaSaskatchewan 5.3
- 20TerraceBritish Columbia 5.3
- 20L'Ancienne-LoretteQuebec 5.3
- 26LangfordBritish Columbia 5.1
- 26OakvilleOntario 5.1
- 26Sherwood ParkAlberta 5.1
- 26SquamishBritish Columbia 5.1
- 26WaterdownOntario 5.1
- 26Rivière-des-Prairies–Pointe-aux-TremblesQuebec 5.1
- 32Nepeanlow-cost sensorsOntario 5.0
- 32Prince AlbertSaskatchewan 5.0
- 32ShawiniganQuebec 5.0
- 32Strawberry HillBritish Columbia 5.0
- 36KamloopsBritish Columbia 4.9
- 36Port CoquitlamBritish Columbia 4.9
- 36RichmondBritish Columbia 4.9
- 36VancouverBritish Columbia 4.9
- 40BurnabyBritish Columbia 4.8
- 40Fort St. JohnBritish Columbia 4.8
- 40KitchenerOntario 4.8
- 40NewmarketOntario 4.8
- 40SarniaOntario 4.8
- 40SaskatoonSaskatchewan 4.8
- 40St. ThomasOntario 4.8
- 40EdmundstonNew Brunswick 4.8
- 48CornwallOntario 4.7
- 48GuelphOntario 4.7
- 48NanaimoBritish Columbia 4.7
- 48St. CatharinesOntario 4.7
- 52BramptonOntario 4.6
- 52ChathamOntario 4.6
- 52MississaugaOntario 4.6
- 55KingstonOntario 4.5
- 55Medicine HatAlberta 4.5
- 55OttawaOntario 4.5
- 58CoquitlamBritish Columbia 4.4
- 58GranbyQuebec 4.4
- 60BarrieOntario 4.3
- 60DeltaBritish Columbia 4.3
- 60Sept-ÎlesQuebec 4.3
- 60Swift CurrentSaskatchewan 4.3
- 64AirdrieAlberta 4.2
- 64DrummondvilleQuebec 4.2
- 64Grande PrairieAlberta 4.2
- 64St. AlbertAlberta 4.2
- 64Trois-RivièresQuebec 4.2
- 64QuébecQuebec 4.2
- 70LethbridgeAlberta 4.1
- 70SydneyNova Scotia 4.1
- 70West VancouverBritish Columbia 4.1
- 73BellevilleOntario 4.0
- 73Fort McMurrayAlberta 4.0
- 75SaguenayQuebec 3.9
- 75Saint-Jean-sur-RichelieuQuebec 3.9
- 75SherbrookeQuebec 3.9
- 78AllistonOntario 3.8
- 78KelownaBritish Columbia 3.8
- 80North VancouverBritish Columbia 3.7
- 81Greater SudburyOntario 3.6
- 81Saint JohnNew Brunswick 3.6
- 83MonctonNew Brunswick 3.5
- 83PeterboroughOntario 3.5
- 85MiramichiNew Brunswick 3.4
- 85Sault Ste. MarieOntario 3.4
- 87CharlottetownPrince Edward Island 3.3
- 87FrederictonNew Brunswick 3.3
- 89North BayOntario 3.2
- 90North CowichanBritish Columbia 3.1
- 91DartmouthNova Scotia 3.0
- 92Campbell RiverBritish Columbia 2.9
- 93Winnipeglow-cost sensorsManitoba 2.8
- 94Gatineaulow-cost sensorsQuebec 2.7
- 95Rouyn-NorandaQuebec 2.6
- 95Yellowknifelow-cost sensorsNorthwest Territories 2.6
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, April 2026 · Canada now
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SmogRank, most polluted cities in Canada, PM2.5, April 2026, smogrank.com/ca/history/2026-04 (accessed 2 Oct 2026).
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