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 observed from Ontario Aviation, Forest Fire and Emergency Services during 2026. Live incident data, retained daily activity, source-reported size, status transitions, perimeter revisions, and archive boundaries stay separate so the page does not imply coverage FireRadar never collected.
Record provenance
Where this history comes from
FireRadar archive
Jul 20, 2026 → Aug 8, 2026
Only retained observations inside this window are counted. Early daily activity points are recovered from completed per-fire snapshots when the newer aggregate series has no row; CWFIS and satellite records remain excluded.
Kept separate
CWFIS continuity · NASA FIRMS hotspots
National fallback records and satellite detections are not silently added to direct-official provincial history.
Current active official fires
154
Aug 9, 2026
Peak observed active fires
190
Jul 20, 2026
Unique fires in archive
296
20 observed archive days
First observed during coverage
109
Incidents first seen by FireRadar inside this archive window
Interactive daily timeline
FireRadar wildfire activity over time
FireRadar daily observation history begins Aug 8, 2026 and grows forward from there. Each point is a direct-official wildfire snapshot; current-day data is included immediately.
Latest
154
Aug 9, 2026
Snapshots
2
Daily points for Ontario
Change in continuous run
+1
Aug 8, 2026 to Aug 9, 2026
| Date | Active official fires |
|---|---|
| Aug 8, 2026 | 153 |
| Aug 9, 2026 | 154 |
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
153
Reported-size changes
108
Official perimeter revisions
833
Largest per-fire max reported size
318,813 ha
Median per-fire max reported size
6 ha
Per-fire maximum source-reported incident size observed by FireRadar; not cumulative hectares burned.
Source classifications
Latest retained cause classification per fire
LIGHTNING238
HUMAN8
Canada-wide interface