Environment Canada’s special air quality statement for southern Ontario continued Monday.
The statement covers the Greater Toronto Area, along with The City Of Toronto.
The agency said smoke from active forest fires in northwestern Ontario may affect areas in the south of the province, leading to poor air quality and reduced visibility.
Air pollutions levels could be higher due to a combination of smoke and ground-level ozone.
“If you or those in your care are exposed to wildfire smoke, consider taking extra precautions to reduce your exposure,” the agency warned. “Wildfire smoke is a constantly-changing mixture of particles and gases which includes many chemicals that can be harmful to your health.”