Heat waves: a practical health and household safety plan

Plan cooling, hydration, check-ins and activity changes before heat arrives; babies, older adults and people with some health conditions may face added risk.

Adapted from a guide first written for Quebec readers: passages specific to Quebec were removed. Rules in your province may differ.

Heat risk depends on more than the daytime high: humidity, warm nights, duration, exertion, housing and health all matter. Babies and young children, older adults, people who live alone, and people with certain chronic conditions or medications may need extra support.

Make a simple plan

• Check local weather and public-health alerts; identify a cool place you can reach.
• Drink water regularly, reduce strenuous activity during the hottest periods and take cooling breaks.
• Close blinds during direct sun and ventilate when outside air is cooler; use available cooling spaces.
• Arrange check-ins for people who live alone and keep needed medicines and contact details accessible.
• Never leave a child or pet alone in a vehicle, even briefly.

Watch for worsening symptoms

Unusual weakness, dizziness, headache, nausea, confusion, reduced urination or difficulty breathing can require prompt attention. Move to a cooler place and seek health advice. Do not change a prescribed medication because of heat without asking a clinician or pharmacist.

Sources and limits

General prevention information only; follow local alerts and individualized medical advice.

General information based on federal and national rules; provincial rules may differ. Confirm with the official body before acting.