Wildfire near Armstrong Station
True color
Fire (SWIR)
Infrared / SWIR (right): sees through smoke.
🟢 green = vegetation
🟤 red/brown = burned
🟠 orange = active fire
Imagery: Sentinel-2 (Copernicus). Drag to compare smoke vs. infrared.
Heat detections: NASA FIRMS (last 48h).
The wildfire burning near the Unorganized Thunder Bay District in Ontario has expanded rapidly since its ignition on July 13, consuming approximately 53,000 hectares over just two days. With an average daily growth rate of 26,500 hectares, the blaze is exhibiting aggressive behavior as it moves through the landscape.
Current satellite monitoring underscores the intensity of the incident, with NASA FIRMS recording 2,090 heat detections in the vicinity over the last 48 hours. This active fire remains a significant concern for the region as suppression efforts continue.
In context
This wildfire burned in Ontario for 33 days. In total it burned about 53,000 ha (130,966 acres) — around 530 km².
In the Northern Hemisphere, wildfire activity usually peaks during the warm, dry months — roughly May through October.
The bigger picture in Canada
Across Canada, roughly 2,595,525 hectares have burned so far in 2026 — 39% below the two-decade average. Data from Copernicus GWIS.
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