Air quality in Canada
Air quality index (AQI⁺) and PM2.5 air pollution in Canada • 17:26, Oct 10
Government of Ontario, Ministry of the EnvironmentAlberta Environmental Monitoring, Evaluation and Reporting Agency (AEMERA)City of Montreal - Official Air Quality Monitoring PortalMinistry of the Environment and the Fight against Climate ChangeBritish 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 BerntsonMendocino County AQMDAnonymousGovernment of SaskatchewanlouisvCalifornia Air Resources Board (CARB)G-ZLXNJanonymous contibutorNiall PlattsrawqaDonToughkeithzgBC Lung FoundationMallowAnonymousJim GuilletPiéEVCOjenny whitfieldcomputeruserRaymond Mc**Chris FournierUniversity of Northern British ColumbiaManitoba GovernmentACHamilton Air Monitoring Network - HAMNSouth RichvaleParkland Airshed Management ZoneCypress MountainMecklenburg County Air QualityElectric Vehicle Council of OttawaBeaton Rettich WatersStephan WehnerPAS Palliser Airshed SocietyClanYoungEco-Nature / Site de la Berge du Garrot-LavalDGEC - 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 PartnershipWildflower Bee Farm Ontario and Nova ScotiaFolarin Solademi (University Manitoba)David Russell-LoewenBBT Batteries Ltd.Evergreen ParkClean Air PlanBC Lung FoundationPeace Airshed Zone Association (PAZA)PSC_SudBC HydroHay River - NTEHay Lakes SchoolBC Hydro RevelstokeCamp TamarackAera CabinsMattAnonymous contributor
3 stations sponsored by The Foundation for Clean Air
Government of Ontario, Ministry of the EnvironmentAlberta Environmental Monitoring, Evaluation and Reporting Agency (AEMERA)City of Montreal - Official Air Quality Monitoring PortalMinistry of the Environment and the Fight against Climate ChangeBritish 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 BerntsonMendocino County AQMDAnonymousGovernment of SaskatchewanlouisvCalifornia Air Resources Board (CARB)G-ZLXNJanonymous contibutorNiall PlattsrawqaDonToughkeithzgBC Lung FoundationMallowAnonymousJim GuilletPiéEVCOjenny whitfieldcomputeruserRaymond Mc**Chris FournierUniversity of Northern British ColumbiaManitoba GovernmentACHamilton Air Monitoring Network - HAMNSouth RichvaleParkland Airshed Management ZoneCypress MountainMecklenburg County Air QualityElectric Vehicle Council of OttawaBeaton Rettich WatersStephan WehnerPAS Palliser Airshed SocietyClanYoungEco-Nature / Site de la Berge du Garrot-LavalDGEC - 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 PartnershipWildflower Bee Farm Ontario and Nova ScotiaFolarin Solademi (University Manitoba)David Russell-LoewenBBT Batteries Ltd.Evergreen ParkClean Air PlanBC Lung FoundationPeace Airshed Zone Association (PAZA)PSC_SudBC HydroHay River - NTEHay Lakes SchoolBC Hydro RevelstokeCamp TamarackAera CabinsMattAnonymous contributor
3 stations sponsored by The Foundation for Clean Air
Live most polluted city ranking
Real-time Canada most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  Chase | 80 | |
| 2 | Headingley | 54 | |
| 3 | Oakville | 51 | |
| 4 | Windsor | 45 | |
| 5 | London | 42 | |
| 6 | Granby | 39 | |
| 7 | Winnipeg | 38 | |
| 8 | Port Stanley | 37 | |
| 9 | Sault Ste. Marie | 33 | |
| 10 | Camrose | 32 |
2025 Canada most polluted city
| Flin Flon, Manitoba | 79 |
Live cleanest city ranking
Real-time Canada cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | Princeton | 1 | |
| 2 | Balzac | 3 | |
| 3 | Sicamous | 4 | |
| 4 | Fort St John | 6 | |
| 5 | Maple Ridge | 6 | |
| 6 | Merritt | 6 | |
| 7 | Bowen Island | 8 | |
| 8 | Collingwood | 8 | |
| 9 | Parksville | 8 | |
| 10 | Richmond | 8 |
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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