Unprecedented wildfires blanket Ottawa in smoke, posing health risks.

Ottawa's air quality hits worst level, warns Environment Canada

Physicians raise alarm over high health risks for homeless in Ottawa 

Quebec bears brunt of wildfires, evacuation orders issued

Toronto's air polluted as wildfires continue, conditions to persist

New York State issues health advisory due to Canada's wildfires

Canada's wildfire season intensifies, on track for worst year

Millions of acres burned as warm and dry conditions persist in Canada