environment
7/14/2026
Pending Review

Second heat wave hits Ontario and Quebec, temperatures near 37°C

Second heat wave hits Ontario and Quebec, temperatures near 37°C
AI-Generated Summary

A second heat wave in just over a week is sweeping across central Canada, with temperatures expected to peak near 37°C on Tuesday. Environment Canada has issued yellow-level heat warnings for Ontario, Quebec, and parts of Saskatchewan and Manitoba, where humidity will make it feel like the mid-40s. Major cities including Toronto, Hamilton, Niagara, Sudbury, and the Greater Toronto Area are under warnings. Health officials urge residents to stay hydrated, avoid strenuous outdoor activity, and use cooling centres. Some sources note a "heat dome" effect and a chance of thunderstorms, with a UV index of 9 in Toronto. The warnings are expected to last several days.

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Sources

Hamilton, Brantford, Niagara and Burlington under heat warning, offer 'cool places' to escape the heat

www.cbc.ca
50%

The City of Hamilton's Medical Officer of Health has issued a heat warning beginning Monday that's expected to last multiple ...

Heat warning in Ontario: here’s what you can do to stay safe during extreme heat waves

www.thenews.com.pk
50%

Environment Canada has continued a Yellow Level Heat Warning for the Blind River, Thessalon, Elliot Lake and Ranger Lake ...

Oppressive heat expected across 4 provinces, Environment Canada warns

www.msn.com
50%

Environment Canada heat warnings are in place from the southeastern corner of Saskatchewan to the western edges of Quebec.

Heat warning issued as temperatures to soar in Sudbury area

www.thesudburystar.com
50%

Residents are being urged to take precautions as a significant heat event is expected to begin Monday, bringing several days ...

Map shows hot weather warnings in place across Canada as heat wave descends

www.msn.com
50%

Environment Canada has issued weather alerts across the country as temperatures as high as 37 C are expected to arrive this ...

Stay cool: Heat wave hits Niagara again

www.niagarathisweek.com
50%

Temperatures this week are expected to peak near 37 C Tuesday as the second heat wave in just over a week hits the province ...

Toronto under ‘heat dome,’ severe weather warning ahead of Canada Day as temperatures feel like 44 C

www.thestar.com
50%

Temperatures today will peak at 34 C, with a chance of thunderstorms. A UV index of 9, and high humidity may pose health ...

Heat warning issued for GTA, temperatures expected to peak near 37 C Tuesday: Environment Canada

www.msn.com
50%

Environment Canada has issued a yellow heat warning for the Greater Toronto Area this week. Starting Monday and expected to ...

Heat, air quality warnings in effect from Saskatchewan to Quebec

www.msn.com
50%

Saskatchewan, Manitoba, Ontario and Quebec are all under heat warnings, with temperatures feeling like mid-40s C. Environment ...

Environment Canada issues yellow-level heat warning for southern Ontario and beyond to start work week

www.insidehalton.com
50%

The heat is back on. Environment Canada has issued a widespread yellow-level heat warning for southern Ontario and beyond to start the work week. “A heat event begins Monday,” stated the warning ...

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