CTV News Toronto at Six for June, 1, 2023
The Toronto mayoral debate at OCAD University was cancelled after a suspect allegedly threatened to shoot the candidates; Toronto and parts of the province have been issued a heat warning with expected temperatures to rise to 31C; Canadian provinces are experiencing dangerous wildfires that destroyed 5 million hectors of land and caused mass evacuations; Healthcare officials say pollen, heat, and poor air quality have major effects on human health, including asthma healthcare