June 29, 2026: Wellington-Dufferin-Guelph (WDG) Public Health reminds residents to take precautions during times of high heat, as Environment and Climate Change Canada has issued an Orange-level alert for the region, indicating prolonged impact that may last throughout the week.

“High summer temperatures can lead to serious health concerns like heat exhaustion and heat stroke, which can be life-threatening,” said Dr. Nicola Mercer, Medical Officer of Health and CEO, WDG Public Health. “It’s important to check in regularly with family, friends and neighbours – especially the elderly, those with infants and young children, those with chronic health conditions and those who live alone – to make sure they are staying cool and well-hydrated.” 

Prolonged heat can increase health risks, particularly when overnight temperatures remain high and people have limited opportunity to cool down. Air quality can also increase extreme heat risks, as air pollution is often higher on very hot days. Residents should regularly check the Air Quality Health Index as well as Environment and Climate Change Canada weather alerts to protect themselves and loved ones.

To reduce the risk of heat-related illness during extreme heat:

• Drink water often, even before feeling thirsty.
• Spend time in air-conditioned buildings when possible.
• Avoid strenuous outdoor activity.
• Close curtains, blinds or awnings during the day to help keep homes cooler.
• Never leave people or pets inside a parked vehicle or in direct sunlight.
• Use WDG Public Health’s ClimateSafe Map to find cooling spaces, drinking water, public washrooms, pools and splash pads.

For more tips, visit WDG Public Health’s Extreme Heat webpage.