Wildfire Smoke From Ontario Blankets Toronto and U.S. Northeast

Wildfires in Ontario have led to numerous community evacuations and have sent smoke drifting into Toronto and the northeastern United States, resulting in poor air quality. On Wednesday, smoke from these fires enveloped Toronto, casting an orange hue over the city and giving the air a distinct wood smoke scent. Environment Canada issued health warnings, cautioning residents about the potential risks of outdoor activities.

The wildfires have affected at least six rural and First Nations communities near Thunder Bay, Ontario, including Namaygoosisagagun First Nation. This community, consisting of about 40 residents, had to evacuate via boat. Sol Mamakwa, an Indigenous provincial parliament member, highlighted the severe impact on the Collins First Nation, stating that their community has been severely affected.

Three trains carrying flammable materials were temporarily held at safer locations due to the threat from the encroaching flames, according to the Ontario Provincial Police. In response to the fire danger and heat, municipalities have implemented bans on open flames, such as campfires. Tuesday’s oppressive temperatures heightened these concerns.

The onset of Canada’s wildfire season typically runs from April to October. However, earlier moister conditions across parts of Canada had delayed its start. The Canadian Interagency Forest Fire Center reports 838 active wildfires across the country. So far in 2026, these fires have consumed 4.7 million acres, significantly lower than the 22.2 million acres burned in 2025, which was Canada’s second-worst wildfire year, following 2023.

The smoke is expected to linger and possibly worsen as a persistent heat dome continues to affect Ontario and the northeastern United States. This weather phenomenon has maintained high temperatures close to 100 degrees Fahrenheit, contributing to the smoke staying closer to the ground, exacerbating air quality issues.