Sunday is projected to be the hottest day of year, so far, according to Environment Canada.
A heat warning is in effect for most of Southern Ontario, with highs to be in the 30’s as we head into the first official day of summer on Monday.
High temperatures and humidity will pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion.
Overnight temperatures will also be warm, as readings are expected to be in the low twenties.
Those not used to the heat are at risk over the next 48 hours, especially older adults, infants and young children, and people with chronic illnesses.
Environment Canada recommends that individuals drink plenty of cool liquids before feeling thirsty, and keep cool by dressing for the weather, spending a few hours each day in a cool place.