Smoke from wildfires in the Prairies will cause poor air quality and reduced visibilities until Sunday.People most likely to suffer health effects from airpollution, including people aged 65 and older,pregnant people, infants and young children,people with an existing illness or chronic healthcondition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms.###As smoke levels increase, health risks increase. Limit time outdoors. Consider reducing or rescheduling outdoor sports, activities and events.You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance.Please continue to monitor alerts and forecasts issued by Environment Canada.