The Chuckegg Creek wildfire has 588 firefighters battling it. They are being supported by helicopters, air tankers and heavy equipment.
According to Environment Canada, smoke from northern Alberta wildfires is causing poor air quality and reduced visibility in many areas around Edmonton, St. Albert and Sherwood Park.
Residents could experience coughing, throat irritation, headaches or shortness of breath. Seniors, children, or anyone with lung disease are particularly at risk.
Anyone with health difficulties should stay in a cool, ventilated place with windows closed