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Canadians across much of the country, with the notable exceptions of
those in British Columbia and Newfoundland and Labrador, continue to
swelter from a heat wave, and Thursday's temperatures are expected to
reach a boiling point in parts of Ontario .
A humidex advisory remains in effect for communities in the southern
parts of the province: from Windsor to Toronto to Ottawa and everywhere
in between, humidex values are expected to climb "well into the 40s
today," Environment Canada cautioned in an early-morning bulletin.
"The humid tropical air mass has arrived," the weather agency said.
Morning temperatures across the region were in the mid-20s, and as the
sun rises higher in the sky the mercury is expected to climb into the
mid and upper 30s in the afternoon. That's when the humidex temperatures
in the 40s are expected.
By 7 a.m., the temperature at Toronto's Pearson International Airport
was already at 27 C, but felt like 38 C with the humidity. A high of 38
C, before the humidex, is expected.
Although that temperature is well above average for this time of year, it's not the highest the city's ever experienced.
That record goes to July 8, 1936, when the temperature in Toronto
climbed to 40.6 C during a continent-wide heat wave that set temperature
records in Ontario, Manitoba and 16 U.S. states and killed 780
Canadians, most of them elderly or infants.
The heat is expected to break slightly for Ontarians as a weak front
is forecast to move in Thursday night. Temperatures will continue in the
low- to mid-30s, but they'll be accompanied by a little less humidity,
Environment Canada said.
Meanwhile, the humidity may not be as intense out east, but the air
quality is doing worse, as a smog warning is in effect for Quebec and an
air quality and health advisory has been issued for New Brunswick.
On Tuesday, Winnipeggers sweated out a record-tying day with a peak
temperature of 34.4 C -- that felt like 47 C with the humidex.
Conditions were similar across much of the Prairies, where temperatures
were well above average.
But on Wednesday night, Manitobans caught a break from the humidity.
Environment Canada ended its humidex advisory for Winnipeg and the
south-central and southeastern parts of the province.
In B.C. and Newfoundland and Labrador, temperatures have been average or slightly below for this time of year
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