Thunder Bay Wildfire Smoke Map
Follow forecast wildfire smoke around Thunder Bay, Lake Superior, and Northwestern Ontario with FireRadar's hourly FireWork map.
How to read smoke around Thunder Bay
Thunder Bay sits south of one of Canada's most active forest-fire regions and can receive smoke from fires across Northwestern Ontario, Manitoba, or the Prairies. Lake Superior and local wind patterns can complicate near-surface smoke compared with the broader model plume. Current AQHI observations remain the better measure of observed health risk.
Forecast, not a measurement
FireWork estimates near-surface PM2.5 attributable to wildfire smoke. It can differ from actual conditions around Thunder Bay because emissions, wind, terrain, mixing, precipitation, and model timing change. Use current AQHI observations and local health advisories when conditions matter to health.
A focused starting view, not a clipped dataset
This page starts the national FireRadar layer around Thunder Bay. The underlying FireWork smoke field is not clipped to municipal boundaries, so nearby conditions remain visible as you pan or zoom. FireRadar does not infer a uniform value inside a city boundary.
Health and safety limitation
FireRadar is an informational environmental map. Follow Environment and Climate Change Canada, provincial health agencies, local public-health guidance, and emergency authorities for health or safety decisions. This page does not diagnose exposure, determine whether outdoor activity is safe, or predict individual health effects.
Related Thunder Bay wildfire context
Smoke and air quality can change even when no confirmed wildfire is close to Thunder Bay. Use the local wildfire page for current official incidents, the fire-danger page for broad fire-weather context, and the province view when you need a wider regional picture.