Incident authority
Ontario Aviation, Forest Fire and Emergency Services
Official active and new fire markers come from Ontario AFFES/LIO data. Marker data is informational and may not represent an exact perimeter.
Season-to-date · ON
Ontario Wildfire Activity — 2026
What FireRadar recorded from Ontario Aviation, Forest Fire and Emergency Services during 2026. The page shows daily history, reported-size changes, status changes, perimeter revisions and FireRadar's coverage dates separately.
Original sources
Where this history comes from
FireRadar archive
Jul 20, 2026 → Oct 9, 2026
Only observations within these dates are counted. FireRadar uses saved incident records to fill some early daily gaps; Natural Resources Canada records and satellite hotspots remain excluded.
Kept separate
CWFIS records · NASA FIRMS hotspots
Natural Resources Canada records and satellite detections are not added to provincial wildfire history.
Current active official fires
15
Oct 10, 2026
Peak observed active fires
190
Jul 20, 2026
Unique fires recorded
374
82 days recorded
First observed during coverage
215
Fires first seen by FireRadar during the dates shown
Interactive daily timeline
FireRadar wildfire activity over time
FireRadar's daily observation history begins Aug. 8, 2026 and grows from there. Each point records official wildfire information available that day; current-day data is included immediately.
Latest
15
Oct 10, 2026
Days recorded
1
Daily points for Ontario
Change in continuous run
Building
Continuous run starts Oct 10, 2026; a second consecutive day of data is needed.
Selected window: Sep 11, 2026 to Oct 10, 2026. Daily records for Ontario currently begin Oct 10, 2026.
| Date | Active official fires |
|---|---|
| Oct 10, 2026 | 15 |
Reported active hectares sums usable sizes for currently active official records. It is not cumulative annual area burned and should not be used as a substitute for an official burned-area statistic.
Incident change history
What changed during FireRadar's observed window
Status transitions
326
Reported-size changes
165
Official perimeter revisions
842
Largest per-fire max reported size
318,813 ha
Median per-fire max reported size
2 ha
Per-fire maximum source-reported incident size observed by FireRadar; not cumulative hectares burned.
Source classifications
Latest reported cause for each fire
LIGHTNING294
HUMAN16
Canada-wide interface