Durham Region is facing its first heat event of the year, with forecasted temperatures expected to meet the criteria for a heat warning in both north and south Durham this weekend. According to the Durham Region Health Department, the event may last several days and possibly continue into next week.
This marks the first heat warning issued under the region’s seasonal Heat Warning and Information System for the year.
Take Precautions
The Health Department is urging residents to take precautions and check in on vulnerable individuals. “Everyone is encouraged to stay alert and take precautions; remember to visit neighbours, friends and older family members – especially those who are chronically ill, living alone or without air conditioning – to ensure that they are staying cool and hydrated.”
Authorities are also reminding the public to never leave infants and young children inside a parked vehicle, noting that even moderate outdoor temperatures can quickly become dangerous. “This is especially important when the outside air temperature is 23ºC/73ºF, as the temperature inside a vehicle can be extremely dangerous and can reach more than 50ºC/122ºF very quickly.” If a child is seen left unattended in a vehicle, call 911 immediately.
A heat warning is triggered when Environment and Climate Change Canada forecasts a daytime high of at least 31°C and overnight lows of 20°C or more, or a humidex value of 40 or higher for two or more days.
Symptoms of Heat-related Illnesses
The region advises all residents to take steps to prevent heat-related illnesses, which can affect anyone but pose the greatest risk to infants, older adults, pregnant individuals, people with chronic illnesses or disabilities, those on certain medications, and individuals experiencing homelessness or who work outdoors.
Symptoms of heat-related illness include dizziness, fainting, swelling, nausea, headache, rapid heartbeat, extreme thirst, and fatigue. In children, symptoms may also include sleepiness or temper tantrums. The Health Department warns that heatstroke is a medical emergency, marked by confusion, loss of consciousness, and a body temperature above 39°C. If these symptoms appear, call 911 and begin cooling measures immediately.
To stay safe, Durham recommends the following:
- Drink water regularly.
- Rest and limit physical activity.
- Use damp towels, cool showers, or foot baths to lower body temperature.
- Block sunlight by closing blinds or curtains.
- Avoid sun exposure and reschedule outdoor activities.
- Never leave people or pets in parked vehicles.
Residents are encouraged to visit durham.ca/Heat for real-time updates, resources, and safety tips. Information is also available through the Durham Health Connection Line at 905-668-2020 or 1-800-841-2729.
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