The conditions are expected to cause poor air quality and reduced visibility across the region, according to a statement issued Thursday by Environment Canada.

The smoke is expected to remain over the northern and central Plains of the United States for the next couple of days, according to meteorologists.

Smoke from wildfires in the prairies is moving from the west into Waterloo region, Guelph, Wellington County and the surrounding area and it's prompted Environment Canada to issue a poor air quality warning,