THUNDER BAY, ONTARIO / RankWire.AI / – Nearly 200 wildfires burned throughout Ontario on July 15, with the majority of blazes concentrated in the northern region. Provincial authorities reported 183 active fires at 3 p.m., with the Northwest Fire Region confirming 136 fires by evening, including 63 that remained uncontrolled. During the day, crews identified eight new fires. Several northern districts faced extreme fire danger as hot, dry, and windy conditions contributed to rapid fire expansion.
Residents of Armstrong, Whitesand First Nation, Gull Bay First Nation, and Lac des Mille Lacs First Nation were ordered to evacuate. Evacuation notices also affected Namaygoosisagagun First Nation and Gakijiwanong Anishinaabe Nation. The Ontario Provincial Police assisted in relocating residents and managing traffic on closed roads. Communities near Ignace, Crystal Lake, and Highway 633 were placed on evacuation alert. Emergency officials advised residents to prepare essential supplies and adhere to local directives.
Namaygoosisagagun, a remote First Nation about 200 kilometres north of Thunder Bay, suffered extensive fire damage. Residents evacuated by boat, as no road connects the community to neighboring towns. The Canadian National Railway suspended service near Armstrong after a fire encircled a train. The crew evacuated safely before the situation worsened. The Anishinabek Nation reported that all known residents had been safely evacuated, pending a full community assessment. Fires damaged or destroyed homes and public buildings. The community, which has approximately 40 members, began assessing the impact following the evacuation.
Road Closures Hamper Evacuations and Emergency Response
Major routes across northwestern Ontario were shut down due to wildfire activity, hampering travel between several remote communities. Highway 599 remained closed between Highway 516 and Mishkeegogamang First Nation, while Highway 527 was closed between Gull Bay First Nation and Armstrong. Highway 11 reopened between Highways 633 and 623, although emergency personnel continued to operate in the area. Canadian National Railway halted service near Armstrong after a fire surrounded a train; the crew evacuated safely before conditions deteriorated.
Firefighting teams prioritized protecting communities, transportation routes, and critical infrastructure. The Dryden 13 fire merged with nearby blazes in the Wabakimi region, creating the larger Thunder Bay 36 incident. Crews also operated near Quetico Provincial Park, Atikokan, Upsala, Cat Lake, and Fort Hope. Water bombers targeted active fire zones while ground crews established containment lines. The Ontario Ministry of Natural Resources deployed personnel and equipment to the most at-risk areas.
Wildfire Smoke Deteriorates Air Quality Over a Broader Area
Thick smoke drifted south from northern Ontario, reaching parts of the northeastern United States. Toronto recorded an Air Quality Health Index reading of 10+, indicating the highest risk level. Environment Canada issued warnings that smoke significantly reduced air quality and visibility. Health officials recommended that children, seniors, and individuals with heart or lung conditions limit outdoor activities. Fine particulate matter from wildfire smoke can irritate the lungs and exacerbate existing health issues.
Ontario declared a Restricted Fire Zone across the Northwest Fire Region and sections of northeastern Ontario. The order banned campfires and other open-air burning activities. All active burning permits within the restricted area were also suspended. So far this year, Ontario has recorded 453 wildland fires, up from 349 at the same point in 2025. The ten-year average for this period is 312. The Ontario Ministry of Natural Resources advised residents to stay updated with official evacuation, highway, and wildfire notices.