Heat warning issued for GTHA, Niagara

Heat warnings are typically issued by Environment Canada when very high temperature or humidity conditions are expected to pose an elevated risk of heat-related illnesses, such as heat stroke or heat exhaustion.

Heat warnings are issued when temperatures are predicted to exceed 31C during the daytime, while nighttime temperatures don’t cool below 20C or the humidex is expected to exceed 40C for two consecutive days. Today’s high of 32.5 C tops that mark, but Monday’s temperature topped out at 31.7 C at Pearson global Airport.

“Frequently visit neighbours, friends and older family members, especially those who are chronically ill, to make sure that they are cool and hydrated”, the release said.

Anyone needing assistance or wanting more heat-related information can call 311.

According to the Simcoe-Muskoka District Health Unit symptoms of heat illness include dizziness, vomiting, headaches, rapid breathing and extreme thirst.

TORONTO -Southern Ontario will be hit by a heat wave this week, giving fans of humid weather what will likely be their first and last stretch of above seasonal temperatures this summer.

Besides standard recommendations such as drinking enough water, avoiding the outdoors, or using sunscreen and appropriate clothing, the city is also encouraging residents to cool down in public pools, libraries, movie theatres, or even at City Hall. But the city is not in official heat wave status.

Along with heat warnings, the risk of active weather and thunderstorms is present in the north with a system tracking east through the Prairies. It will be in effect until further notice.