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Environment Canada has issued a yellow-level heat warning for Hamilton, Niagara, Brantford and Burlington, with the first heat event of the season beginning Monday afternoon. It’s expected to continue into Tuesday night.
Environment Canada says daytime temperatures are predicted to reach near 30 C, with humidex values expected to be near 36 C. Overnight lows of 18 C to 20 C are expected.
Under Environment Canada’s colour-coded warning system, yellow is the lowest level, followed by orange, and then red — the most serious warning.
The federal weather agency says people should take action to protect themselves and others, adding that extreme heat can affect everyone’s health.
“Determine if you or others around you are at greater risk of heat illness. Check on older adults, those living alone and other at-risk people in-person or on the phone multiple times a day,” the agency says.
Watch for signs of heat exhaustion
Environment Canada is also advising people to watch for the early signs of heat exhaustion. These may include headache, nausea, dizziness, thirst, dark urine and intense fatigue.
Noting that heat stroke is a medical emergency, Environment Canada said, “Call 9-1-1 or your emergency health provider if you, or someone around you, is showing signs of heat stroke which can include red and hot skin, dizziness, nausea, confusion and change in consciousness.
“While you wait for medical attention, try to cool the person by moving them to a cool place, removing extra clothing, applying cold water or ice packs around the body.”
The agency has also provided a list of ways to cope with extreme heat. These include:
Drink water often and before you feel thirsty to replace fluids. Close blinds, or shades and open windows if outside is cooler than inside. Turn on air conditioning, use a fan, or move to a cooler area of your living space. If your living space is hot, move to a cool public space such as a cooling centre, community centre, library or shaded park. Follow the advice of your region’s public health authority.Plan and schedule outdoor activities during the coolest parts of the day. Limit direct exposure to the sun and heat. Wear lightweight, light-coloured, loose-fitting clothing and a wide-brimmed hat. Never leave people, especially children, or pets inside a parked vehicle. Check the vehicle before locking to make sure no one is left behind.