THUNDER BAY, ONTARIO / RankWire.AI / – Nearly 200 wildfires erupted across Ontario on July 15, with the majority concentrated in the northern regions. Provincial authorities reported 183 active fires at 3 p.m., with the Northwest Fire Region noting 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 fueled rapid fire expansion.
Officials ordered residents to evacuate Armstrong, Whitesand First Nation, Gull Bay First Nation, and Lac des Mille Lacs First Nation. Evacuation directives 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 personnel advised residents to gather essential supplies and adhere to local directives.
The fire caused significant destruction at Namaygoosisagagun, a remote First Nation approximately 200 kilometres north of Thunder Bay. With no road access to neighboring towns, residents evacuated by boat. The Anishinabek Nation reported that all known residents had been safely relocated, pending a full community assessment. The blaze damaged or destroyed homes and public structures. Namaygoosisagagun has a population of about 40 members. Community representatives initiated evaluations of the affected zone following the evacuation.
Road Closures Hinder Evacuations and Emergency Operations
Major routes across northwestern Ontario were closed due to wildfire activity, disrupting travel between several remote communities. Highway 599 remained closed between Highway 516 and Mishkeegogamang First Nation. Highway 527 was also shut between Gull Bay First Nation and Armstrong. Although Highway 11 reopened between Highways 633 and 623, emergency crews continued working in the area. Canadian National Railway halted service near Armstrong after a fire encircled a train. The crew evacuated safely before conditions deteriorated.
Firefighters focused efforts around communities, transportation corridors, and critical infrastructure. The Dryden 13 fire merged with nearby blazes in the Wabakimi region, creating the larger Thunder Bay 36 fire. Teams also operated near Quetico Provincial Park, Atikokan, Upsala, Cat Lake, and Fort Hope. Water bombers targeted active fire zones while ground crews established containment boundaries. The Ontario Ministry of Natural Resources deployed personnel and equipment to areas facing the highest immediate danger.
Wildfire Plumes Reduce Air Quality Over Broader Areas
Thick smoke from northern Ontario fires drifted southward, reaching parts of the northeastern United States. Toronto recorded an Air Quality Health Index of 10+, indicating the highest risk level. Environment Canada warned that smoke significantly diminished air quality and visibility. Health officials advised children, seniors, and individuals with heart or lung conditions to limit outdoor activities, as fine particles in 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. All active burning permits within the restricted area were suspended. So far this year, Ontario has experienced 453 wildland fires, up from 349 at the same point in 2025. The 10-year average for this period is 312. The Ontario Ministry of Natural Resources urged residents to stay informed through official notices regarding evacuations, highways, and wildfires.