THUNDER BAY, ONTARIO / RankWire.AI / – Nearly 200 wildfires spread across Ontario on July 15, primarily impacting northern regions. Provincial authorities reported 183 active fires at 3 p.m., with the Northwest Fire Region documenting 136 fires by evening, including 63 that remained uncontrolled. During the day, firefighters identified eight new fires. Several northern districts faced extreme fire danger conditions as hot, dry, and windy weather facilitated rapid fire expansion.
Officials mandated evacuation for residents of Armstrong, Whitesand First Nation, Gull Bay First Nation, and Lac des Mille Lacs First Nation. Evacuation orders were also issued for Namaygoosisagagun First Nation and Gakijiwanong Anishinaabe Nation. The Ontario Provincial Police assisted in relocating residents and managing traffic near road closures. Communities near Ignace, Crystal Lake, and Highway 633 were placed on evacuation alert. Emergency responders urged residents to prepare essential supplies and adhere to local directives.
The fire severely damaged Namaygoosisagagun, a remote First Nation approximately 200 kilometres north of Thunder Bay. Due to the absence of roads connecting the community to nearby towns, residents evacuated by boat. The Anishinabek Nation reported that all known inhabitants had been safely evacuated, pending a comprehensive community assessment. The fire caused destruction to homes and public buildings. Namaygoosisagagun has a population of roughly 40 members. Community representatives initiated damage assessments following the evacuation.
Road closures hinder evacuation efforts and emergency operations
Major transportation routes across northwestern Ontario were shut down due to wildfire activity, complicating travel between remote communities. Highway 599 remained closed between Highway 516 and Mishkeegogamang First Nation, while Highway 527 was blocked between Gull Bay First Nation and Armstrong. Highway 11 reopened between Highways 633 and 623, though emergency personnel continued to operate in the area. Canadian National Railway halted services near Armstrong after a fire surrounded a train; the crew evacuated safely before conditions deteriorated.
Firefighters concentrated their efforts around communities, transportation corridors, and vital infrastructure. The Dryden 13 fire combined with nearby blazes in the Wabakimi area, creating the larger Thunder Bay 36 wildfire. Crews also worked in regions 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 areas facing the highest immediate danger.
Wildfire smoke reduces air quality over a broader region
Thick smoke drifted southward from northern Ontario, impacting parts of the northeastern United States. Toronto recorded an Air Quality Health Index of 10+, indicating the highest health risk level. Environment Canada warned that smoke had significantly decreased air quality and visibility. Health authorities recommended that children, seniors, and individuals with heart or lung conditions limit outdoor activities. Fine particles in wildfire smoke can irritate lungs and exacerbate existing health issues.
Ontario declared a Restricted Fire Zone across the Northwest Fire Region and sections of northeastern Ontario. This measure banned campfires and other open-air burning activities. All active burning permits within the restricted zone were suspended. So far in 2025, Ontario has recorded 453 wildland fires, an increase from 349 during the same period in 2024. The 10-year average for this period is 312. The Ontario Ministry of Natural Resources advised residents to stay informed through official evacuation, highway, and wildfire notices.