Wildfire Smoke Forecast
Understanding the wildfire smoke forecast
This map animates the forecast concentration of fine particulate matter (PM2.5) — the main health concern in wildfire smoke — at ground level across Canada and the US. The smoke plume comes from Environment and Climate Change Canada's RAQDPS wildfire model, which runs twice daily and forecasts hourly out to roughly 72 hours; live active-fire hotspots come from Natural Resources Canada's CWFIS. Search any address or right-click the map for a local reading and 3-day smoke outlook. Smoke season and fire season travel together — check current ignition conditions on our Fire Danger Forecast map, and if you live in a wildfire-prone region, see our guide to the best roof for wildfire zones.
Frequently asked questions
Where does the wildfire smoke and air-quality data come from?
The animated smoke and surface PM2.5 forecast comes from Environment and Climate Change Canada's (ECCC) RAQDPS wildfire smoke-plume model, and active-fire hotspots come from Natural Resources Canada's Canadian Wildland Fire Information System (CWFIS).
How often is the forecast updated?
The model runs twice daily and forecasts hourly out to roughly 72 hours.
What is PM2.5?
PM2.5 is fine particulate matter 2.5 microns or smaller — the main health concern in wildfire smoke. It is measured in micrograms per cubic metre (µg/m³); higher values mean poorer air quality.
How do I check the air quality at my address?
Search any address or postcode, or right-click anywhere on the map, to see the forecast PM2.5 reading and a 3-day smoke outlook for that exact location.
Does wildfire smoke or ash damage a roof?
Smoke and settled ash do not damage an aluminum roof — the coated surface rinses clean with a garden hose once the air clears. The real roof risk during fire season is wind-blown embers from a nearby fire, which is why keeping gutters clear of dry debris and choosing a non-combustible, Class A fire-rated roof covering matter in wildfire-prone regions. Check current conditions on our Fire Danger Forecast map.
Is this a substitute for official air-quality advisories?
No. It is a model forecast for general awareness, not a substitute for official air-quality advisories or medical advice. Always check your local health authority for warnings before making health or work decisions.