How to Read a Wildfire Map
Learn how to interpret official wildfire incidents, satellite hotspots, fire perimeters, smoke forecasts, AQHI, statuses, timestamps, and evacuation information without mixing unlike datasets.
Published July 20, 2026Editorially reviewed August 23, 2026
Start by identifying what each layer represents
A named official wildfire incident, a satellite thermal hotspot, a mapped perimeter, a smoke forecast, and an AQHI observation are different datasets. They should not be counted or interpreted as if they were interchangeable evidence of the same thing.
A point marker is usually not the full fire boundary
An incident marker often represents a reported reference coordinate. A perimeter polygon, when available, is a separate mapped estimate of the fire's boundary. Satellite hotspots are heat-detection points and can cluster inside or around one incident.
Read status and time together
A status such as out of control, being held, or under control has a definition set by the responsible agency. First reported, last updated, forecast time and the time FireRadar checked the source mean different things. Opening the page does not make an older source record newer.
Use emergency layers and notices from the authority that owns them
A wildfire map can help you understand current conditions, but evacuation orders, road closures, emergency alerts and public-safety instructions belong to the responsible authorities. Never assume an area is safe simply because a fire marker is distant or a map layer is empty.
Common questions
Does one satellite hotspot mean one wildfire?
No. One fire can produce many detections, and some detections can come from non-wildfire heat sources. Use official incident data for confirmed named fires where available.
Is a fire marker the centre of the fire?
Not necessarily. It may be a reference or discovery coordinate supplied by the source. A mapped perimeter is more appropriate for understanding the reported boundary when one is available.
Why do two wildfire maps show different numbers?
They may use different source feeds, update times, status rules, jurisdictions, retention windows, or satellite datasets. Compare the labels and source timestamps before comparing totals.
Official and trusted sources
FireRadar summarizes these resources in plain language. Follow the source itself for the newest guidance, local instructions, eligibility rules, or operational decisions.
Source destinations checked August 23, 2026.
National wildfire information and downloadable fire statistics by year and jurisdiction.
National historical fire point and perimeter data with important coverage and completeness caveats.
We create these guides to make Canadian wildfire, smoke, and air-quality information easier to understand. The map and official authorities remain the best places to check current conditions and safety instructions.
— The FireRadar team
Related FireRadar resources
Understand Canada's AQHI scale from 1 to 10+, what low, moderate, high, and very high risk mean, and how wildfire smoke can change air-quality health risk quickly.
Explore how Canadian wildfire counts and area burned vary from year to year, why fire count alone can be misleading, and where to find official national datasets.
Learn about some of Canada's largest documented wildfires and burned areas, including why historical rankings depend on data coverage, merged fire complexes, and mapping methods.
Open province, territory, wildfire, hotspot, smoke, and AQHI map views from the FireRadar directory.