Heat warning from Environment Canada includes York, Peel, Halton and Durham regions and Toronto.
Residents are advised to seek immediate medical attention if experience serious symptoms resulting from heat illness, which includes swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
Beat the heat and drink plenty of water even before you feel thirsty and stay in a cool place.
Seek a cool place such as a tree-shaded area, swimming pool, shower or bath, or air-conditioned spot like a public building.
Do not leave people or pets inside a parked vehicle.
Please check on family and neighbours who may be at risk during a heat event.