Environment Canada has issued a heat warning for Saturday and Sunday.
Maximum temperatures are expected to be in the high 20s or low 30s, with the minimum temp. only getting to the low 20s.
Factor in the humidex, and it will feel closer to the high 30s or low 40s.
The weather agency also warns that hot and humid air can bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category.
Cooler temperatures are expected for Monday.
You can click here, for a list of cooling centres in the region.