Canada weather: Heat warnings for Ontario, Quebec, Nova Scotia

While summer is in full swing in much of eastern Canada, the weather on Tuesday will be more mild and seasonal out west and in the Prairies.

Environment Canada has issued heat warnings for large parts of Ontario, Quebec and Nova Scotia, where temperatures on Tuesday could reach sweltering daytime highs of 34 degrees Celsius in Toronto, 34 in Ottawa, 35 in Montreal, 32 in Quebec City and 29 in Halifax, without factoring in humidity values.

“The first significant heat event of the season with dangerously hot and humid conditions continues through today,” Environment Canada warned. “Take action to protect yourself and others – extreme heat can affect everyone’s health.”

In Western Canada and the Prairies, conditions are more comfortable. Daytime highs on Tuesday are expected to reach 20 in Victoria, 22 in Vancouver, 21 in Calgary, 22 in Edmonton, 21 in Regina and 26 in Winnipeg.

Similar conditions are also expected in Northern Canada, where forecasted daytime highs are 21 in Whitehorse and 19 in Yellowknife.

Although heat warnings have not been issued for other parts of Atlantic Canada, it will still be hot in Fredericton, N.B., and Charlottetown, P.E.I., where daytime temperatures could reach 33 and 27 respectively. Much of New Brunswick and P.E.I. are also under severe thunderstorm watches.

The cities with the coolest temperatures on Tuesday are in Newfoundland and Nunavut, where daytime highs are expected to reach 16 in St. John’s and 6 in Iqaluit. Both cities have a 60 per cent chance of precipitation tonight.

Parts of Alberta and Saskatchewan were also experiencing heavy fog, which should lift by late morning.

Air quality issues from wildfires were not widespread on Tuesday, although Environment Canada advisories remained in effect for certain parts of B.C., Alberta, Saskatchewan, Manitoba, Yukon and Northwest Territories.

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