CALGARY — Heat warnings have ended in Alberta as thick smoke lingers. This has greatly reduced air quality and visibility, and also reduced heat from the sun – bringing temperatures below the heat warning criteria. For central Alberta, daytime highs should reach the low to mid-20s while southeastern areas reach the upper 20s. A risk of thunderstorms on Monday night stretches from southeastern Alberta to the north-central regions. For Calgary, Tuesday morning begins with more fog and smoke, and a chance of showers through the day. Here’s the five-day: Monday Tuesday Wednesday Thursday Friday