Environment Canada's air quality index has reported moderate to high risk since Saturday morning in Calgary, as many parts of the country struggle with the effects of wildfire smoke.

Wildfires are still raging in Canada, where there have been dozens of active fires, and over 33,000 people have been forced to evacuate their homes.

Canadian wildfires, along with high temperatures, are partly to blame for hazy skies and foul air. But passing storms may lessen the concern by June 8.