Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air quality conditions across Eastern Canada and the United States.

Wildfire smoke blankets the Toronto skyline and triggers an air quality warning:: July 14, 2025:: Toronto, CanadaAccording to CBC, Environment Canada said that parts of the Greater Toronto Area are under both an air quality warning and heat warning.

Environment Canada urges residents to limit their time outdoors. But even when inside, most buildings can only reduce airborne pollutants by half.