As per reports, Environment Canada has forecast daytime highs near 31 degrees Celsius with humidex values of 35 to 38 through Monday (08 July) and persist into Tuesday (09 July).

The heat warning has been issued for Toronto, Burlington, Oakville, Hamilton, Niagara Falls, Welland, Southern Niagara Region, Halton Hills, Milton, Hamilton, Vaughan, Richmond Hill and Markham.