Environment Canada issues heat warning in Ottawa over ‘multi-day’ heat event

A lifeguard works at Britannia Beach in Ottawa, on Tuesday, June 18, 2024. THE CANADIAN PRESS/Justin Tang

Environment Canada has issued a heat warning for eastern Ontario, including Ottawa, advising of a prolonged period of hot and humid conditions early next week.

The forecaster says a “multi-day heat event” will begin on Sunday and is expected to last until Tuesday.

Daytime temperatures are expected to be between 30 C and 34 C. The humidity could make it feel like between 38 and 42.

Nighttime temperatures will provide little relief with nighttime lows of 19 C to 23 C.

The hottest conditions are expected on Monday.

Environment Canada says there is some uncertainty in the duration of the heat event. Some regions could see the conditions persist into Wednesday.

The forecaster says to take action to protect yourself and others, especially those at higher risk of heat illness.

Signs of heat exhaustion include headache, nausea, dizziness, thirst, dark urine and intense fatigue. Stop your activity and drink water. Call 911 if you or anyone is showing signs of heat stroke.

The City of Ottawa provides a list of places for residents who need a place to cool off.

Ottawa weather

Clear Saturday with increasing clouds near midnight then a 40 per cent chance of rain overnight. There is a risk of a thunderstorm this evening. Low 19 C.

Sunday will be mainly cloudy with a 40 per cent chance of showers. There is a risk of a thunderstorm. High 31 C will feel like 36 with humidity.

Partly cloudy in the evening with a 30 per cent chance of rain and a risk of a thunderstorm. Low 20 C.

Monday will be sunny with a high of 33 C. Cloudy periods in the evening with a 40 per cent chance of showers. Low 21 C.

Tuesday shows a mix of sun and clouds with a 40 per cent chance of rain. High 30 C. Low 17 C in the evening.

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