Air quality in Canada
Air quality index (AQI⁺) and PM2.5 air pollution in Canada • 14:04, Nov 02
Government of Ontario, Ministry of the EnvironmentAlberta Environmental Monitoring, Evaluation and Reporting Agency (AEMERA)Ministry of the Environment and the Fight against Climate ChangeCity of Montreal - Official Air Quality Monitoring PortalBritish Columbia Ministry of EnvironmentMinistry of Environment & Climate Change Strategy - Government of B.COklahoma Department of Environmental Quality Metro VancouverMarten LettingaCanada-Nova Scotia1Environment and Local Government of New BrunswickMichigan Department of Environment, Great Lakes, and Energy (EGLE)Kelly BerntsonRobertMendocino County AQMDGovernment of SaskatchewanAnonymouslouisvCalifornia Air Resources Board (CARB)G-ZLXNJanonymous contibutorNiall PlattsUniversity of Northern British ColumbiarawqaDonToughkeithzgBC Lung FoundationMallowAnonymousJim GuilletNational Air Pollution Surveillance ProgramPiéEVCOjenny whitfieldcomputeruser**Chris FournierManitoba GovernmentHamilton Air Monitoring Network - HAMNACSouth RichvaleParkland Airshed Management ZoneCypress MountainMecklenburg County Air QualityElectric Vehicle Council of OttawaBeaton Rettich WatersWoody NelsonStephan WehnerPAS Palliser Airshed SocietyEco-Nature / Site de la Berge du Garrot-LavalClanYoungDGEC - GreensvilleGalactic Monitoring Wood Buffalo Environmental AssociationNewfoundland & Labrador Department of Environment and Climate ChangeWest Central Airshed SocietyVille de Thetford MinesHydro MeteoCamp YowochasDataforge CanadaThe Clean Energy ShowFort Air PartnershipDavid Russell-LoewenFolarin Solademi (University Manitoba)Wildflower Bee Farm Ontario and Nova ScotiaClean Air PlanBBT Batteries Ltd.Antiquités de l’île et Ferme Au goût d’autrefoisEvergreen ParkPeace Airshed Zone Association (PAZA)BC Lung FoundationPSC_SudBC HydroHay River - NTEHay Lakes SchoolAera CabinsMattAnonymous contributor
2 stations sponsored by The Foundation for Clean Air
Government of Ontario, Ministry of the EnvironmentAlberta Environmental Monitoring, Evaluation and Reporting Agency (AEMERA)Ministry of the Environment and the Fight against Climate ChangeCity of Montreal - Official Air Quality Monitoring PortalBritish Columbia Ministry of EnvironmentMinistry of Environment & Climate Change Strategy - Government of B.COklahoma Department of Environmental Quality Metro VancouverMarten LettingaCanada-Nova Scotia1Environment and Local Government of New BrunswickMichigan Department of Environment, Great Lakes, and Energy (EGLE)Kelly BerntsonRobertMendocino County AQMDGovernment of SaskatchewanAnonymouslouisvCalifornia Air Resources Board (CARB)G-ZLXNJanonymous contibutorNiall PlattsUniversity of Northern British ColumbiarawqaDonToughkeithzgBC Lung FoundationMallowAnonymousJim GuilletNational Air Pollution Surveillance ProgramPiéEVCOjenny whitfieldcomputeruser**Chris FournierManitoba GovernmentHamilton Air Monitoring Network - HAMNACSouth RichvaleParkland Airshed Management ZoneCypress MountainMecklenburg County Air QualityElectric Vehicle Council of OttawaBeaton Rettich WatersWoody NelsonStephan WehnerPAS Palliser Airshed SocietyEco-Nature / Site de la Berge du Garrot-LavalClanYoungDGEC - GreensvilleGalactic Monitoring Wood Buffalo Environmental AssociationNewfoundland & Labrador Department of Environment and Climate ChangeWest Central Airshed SocietyVille de Thetford MinesHydro MeteoCamp YowochasDataforge CanadaThe Clean Energy ShowFort Air PartnershipDavid Russell-LoewenFolarin Solademi (University Manitoba)Wildflower Bee Farm Ontario and Nova ScotiaClean Air PlanBBT Batteries Ltd.Antiquités de l’île et Ferme Au goût d’autrefoisEvergreen ParkPeace Airshed Zone Association (PAZA)BC Lung FoundationPSC_SudBC HydroHay River - NTEHay Lakes SchoolAera CabinsMattAnonymous contributor
2 stations sponsored by The Foundation for Clean Air
Live most polluted city ranking
Real-time Canada most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  Coldstream | 81 | |
| 2 | Medicine Hat | 76 | |
| 3 | Selkirk | 74 | |
| 4 | Port Alberni | 73 | |
| 5 | Headingley | 68 | |
| 6 | Campbell River | 66 | |
| 7 | Toronto | 64 | |
| 8 | Vernon | 64 | |
| 9 | Fernie | 63 | |
| 10 | East York | 62 |
2025 Canada most polluted city
| Flin Flon, Manitoba | 79 |
Live cleanest city ranking
Real-time Canada cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | Lions Bay | 6 | |
| 2 | Bowen Island | 7 | |
| 3 | Hochelaga | 8 | |
| 4 | North Vancouver | 9 | |
| 5 | Sechelt | 11 | |
| 6 | Whitehorse | 11 | |
| 7 | Canmore | 16 | |
| 8 | Sherbrooke | 16 | |
| 9 | West End | 16 | |
| 10 | Whistler | 16 |
2025 Canada cleanest city
| Bedford, Nova Scotia | 12 |
2025 Canada air quality
2025 country air quality average
How polluted is Canada?
In 2025 in Canada, the annual PM2.5 concentration was 1.5 times the WHO annual PM2.5 guideline.
2025 AQI⁺ country ranking
Which country had the worst air quality in 2025?
Worldwide PM2.5 ranking
2025 Canada global rank in air pollution
117/143
Wildfires in Canada
Real-time information
Active fires
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