In the height of summer, when most Americans dream of clear skies, campfires, and serene lakeside vacations, a thick haz ...

Toronto is among the most polluted cities in the world on Monday morning as the city remains under a special air quality ...

Most of the province remains under air quality statements due to wildfire smoke from northern Ontario and the Prairies.

Masks work best, they say, on clean-shaven faces, and should be thrown out after breathing gets difficult, or the mask gets ...