A special air quality statement is out for areas in Manitoba, including the municipalities of Minitonas-Bowsman and Swan Valley West.
Also under the statement are Duck Mountain Provincial Park and the R.M. of Mountain including Cowan, Camperville, Mafeking, and Birch River.
Smoke from forest fires in the province, Environment Canada says, is causing poor air quality and reduced visibility.
Individuals in these areas may experience symptoms such as increased coughing, throat irritation, headaches or shortness of breath.