Environment Canada says smoke from forest fires that arrived Saturday afternoon could now linger until early Monday morning.

Ottawa and much of south and southeastern Ontario can expect poor air quality this weekend as wildfire smoke returns, Environment Canada says. The special air quality statement was issued shortly before 1:30 p.

An air quality alert was reported by the National Weather Service on Friday at 11:55 a.m. EDT in effect until Sunday at midnight EDT for Mason, Lake, Osceola, Clare, Oceana, Newaygo, Mecosta, Isabella,