2021 Ontario Wildfire History
This source-backed 2021 Ontario research page provides a stable route into Canada's official annual and incident-history datasets. Nationally, Natural Resources Canada's current annual series reports 6,710 wildland fires and 4,078,894 ha burned in 2021; use the jurisdiction filters in the linked official datasets for the Ontario-specific record rather than treating the Canada total as a provincial statistic.
NRCan national annual series; context only, not the provincial total
NRCan national annual series; context only
Annual tables plus agency-provided historical locations/perimeters where available
Research Ontario in 2021
Ontario's fire region covers a vast northern boreal landscape. A province-wide annual record can contain very different Northwest, Northeast and southern conditions, which is why the source filters remain part of the page utility.
The canonical page owns the 2021 Ontario historical-season intent without creating month, cause, status or keyword-variant URLs. The official NFD tables remain the place to filter the source data by jurisdiction and reporting category.
CNFDB fire locations and mapped polygons have different completeness. FireRadar never infers a historical perimeter from a fire point or final reported area, and a missing polygon is not described as evidence that no fire occurred.
National Forestry Database — Forest Fires
Canadian Council of Forest Ministers annual fire tables with jurisdiction, year, cause, month and fire-size filters and downloadable source data.
Natural Resources Canada — Canadian National Fire Database
Agency-provided historical wildfire locations and mapped fire perimeters. Point and polygon coverage differ, so a missing perimeter is not treated as a missing historical fire.
Compare nearby Ontario seasons
Compare the same official historical datasets in a different reporting year →
Compare the same official historical datasets in a different reporting year →
Compare the same official historical datasets in a different reporting year →
Compare the same official historical datasets in a different reporting year →