Heat warning issued for Calgary through early next week

A heat warning was issued for Calgary by Environment Canada early Saturday. Temperatures are anticipated to exceed 29 degrees, combined with overnight lows of around 14 degrees for a number of days, likely lasting into early next week. There's a chance of afternoon showers with a possibility of a thunderstorm late Saturday afternoon or early this evening. Air quality for the Calgary area is good, with a number of festivals and other events scheduled for the weekend.