Extreme Heat Warning Issued July 5, 2023

Environment Canada has issued a heat warning for the Lake of Bays region. A multi-day heat event is currently underway, and temperatures ranging from 29 to 33 degrees Celsius (with a humidex of 37 to 42) are expected to persist until Thursday, July 6, 2023.

During periods of high temperatures, overexertion can increase the risk of heat exhaustion, dehydration, or heat stroke. The Simcoe Muskoka District Health Unit (SMDHU) advises that you should be careful of your health and look for ways to avoid overheating.

• Be sure to drink plenty of fluids (non-caffeinated). Don’t wait until you feel thirsty – that’s a sign that your body is already becoming dehydrated.
• Stay cool indoors.
• Draw blinds or curtains to prevent radiant heat from entering homes.
• Electric fans provide comfort by increasing evaporation; however, when conditions are extreme, fans will not prevent heat-related illness.
• If you must be outside, stay in the shade and make sure you wear and reapply sunscreen, a broad-brimmed hat, sunglasses and lightweight, light-colored, loose-fitting clothing.
• Keep physical activity to a minimum.

Infants and young children, the frail elderly and people with chronic lung conditions or taking certain prescription drugs are more vulnerable to harm from overheating. Check in on family and friends who are more vulnerable to the effects of extreme heat to make sure they’re staying safe.

For additional information, please visit the Simcoe Muskoka District Health Unit's Extreme Heat page.