Environment Canada issued a heat warning for parts of Alberta on Sunday, warning high temperatures are expected for the next three days.
The warnings were first issued in southern Alberta but later, parts of east-central and northeastern Alberta were also issued warnings.
The hot weather is expected to last until Tuesday, with the exception of Calgary, whose warning ended on Monday at 3:30 p.m.
“Heat warnings are issued when very high-temperature conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion,” Environment Canada said on its website.
READ MORE: Dehydration, cramps: common symptoms of heat exhaustion
The weather agency warned people in the affected areas to watch for signs of heat stroke or exhaustion, high body temperature, lack of sweat and confusion.
Children, seniors and people with pre-existing health conditions are considered to be more at risk for heat-related illness. Environment Canada suggested drinking plenty of water, taking lots of breaks from the heat and keeping a close eye on children and pets.
For a complete list of areas in Alberta under a weather alert, click here.
Want your weather on the go? Download Global News’ Skytracker weather app for iPhone, iPad and Android.
Watch below: Some Global News videos about heat stroke and heat exhaustion.