Heat Warning in Effect: Take Steps to Stay Safe During Extreme Heat

Environment and Climate Change Canada has issued a Heat Warning for our region, with dangerously hot and humid conditions expected to begin today and continue until Wednesday evening or Thursday evening.

Temperatures are expected to reach 30°C to 37°C during the day, with overnight lows remaining between 20°C and 24°C. Humidex values are forecast to range from 38 to 45, creating conditions that can pose serious health risks.

Tuesday is expected to be the hottest day of this heat event, with daytime temperatures approaching 37°C across parts of eastern Ontario.

In addition to the extreme heat, hot and humid conditions may also lead to reduced air quality, with the Air Quality Health Index potentially reaching the high-risk category.

Protect Yourself and Others

Extreme heat can affect anyone, but some people are at greater risk, including older adults, infants and young children, people with chronic illnesses, those living alone, and individuals who work or spend long periods outdoors.

Please check on family members, neighbours, Elders, and others who may need assistance several times throughout the day.

Watch for Signs of Heat Illness

Early symptoms of heat exhaustion may include:

• Headache
• Nausea
• Dizziness
• Excessive thirst
• Dark-coloured urine
• Extreme fatigue

If you or someone else experiences these symptoms, stop all physical activity, move to a cool place, and drink plenty of water.

Heat Stroke is a Medical Emergency

Call 9-1-1 immediately if someone shows signs of heat stroke, including:

• Red, hot skin
• Dizziness
• Nausea
• Confusion
• Loss of consciousness or changes in awareness

While waiting for emergency responders, move the person to a cooler location, remove excess clothing, and cool them with cold water, damp cloths, or ice packs.

Heat Safety Tips

During this heat event, everyone is encouraged to:

• Drink water frequently, even before you feel thirsty.
• Keep blinds or curtains closed during the hottest parts of the day and open windows if the outside air is cooler.
• Use air conditioning or fans whenever possible, or visit a cool public space such as a community centre, library, cooling centre, or shaded park.
• Plan outdoor activities during the early morning or evening when temperatures are cooler.
• Wear lightweight, light-coloured, loose-fitting clothing and a wide-brimmed hat.
• Limit prolonged exposure to direct sunlight.
• Follow guidance from your local public health authority.
• Never leave children, adults, or pets unattended in a parked vehicle, even for a few minutes.

The health and safety of our community is our shared responsibility. By taking simple precautions and looking out for one another, we can help ensure everyone stays safe during this period of extreme heat.

We encourage all community members to stay informed, stay hydrated, and check in on those who may need extra support.