"A special air quality statement is in place due to the possibility of deteriorating air quality," the agency wrote in a press release Thursday. "Hot and sunny conditions are expected to cause increasing ground-level ozone concentrations in the area."

If you were frustrated by the mild spring, you will be pleased with the weekend ahead as it looks like Southern Ontario is in for a heatwave.

A spokesperson for Toronto Hydro said that customers can take steps to prevent large increases in their energy bills related to running air conditioning.