Warm commencement of the weekend weekend, heat advisory instituted
Multi-Day Heat Warning Issued Across Canada
Environment Canada has issued a multi-day heat warning, predicting daytime temperatures to reach or exceed 29°C to 35°C until the middle of next week. The warning covers several regions, including southern Ontario, Quebec, Atlantic provinces, and parts of British Columbia.
During this heat event, humidex values may near or exceed 40°C in some areas, with nighttime temperatures remaining elevated around 18°C or higher. The UV index is expected to rise to moderate or higher levels, especially between 11:00 a.m. and 4:00 p.m., necessitating sun protection measures.
Health precautions focus on avoiding heat-related illnesses such as heat exhaustion, heat stroke, heat fainting, heat cramps, heat edema, and heat rash. Signs of heat exhaustion to monitor include heavy sweating, weakness, cold pale skin, fast or weak pulse, nausea or vomiting, and fainting.
Vulnerable populations, including older adults, infants, young children, pregnant women, people with chronic illnesses, people who use alcohol or illicit drugs, and those working or exercising outdoors, are at a higher risk for heat-related illness. It's crucial to stay indoors in cool environments, drink plenty of water, limit strenuous physical activity during peak heat, and check on at-risk individuals.
Key points during this heat event include:
- Expected daytime highs of 29–35°C with humidex near or above 40
- Nighttime temperatures around or above 18°C
- UV index moderate to high — use sun protection and avoid peak sun exposure (11 a.m.–4 p.m.)
- Monitor for signs of heat exhaustion: heavy sweating, weakness, nausea, fainting
- Stay hydrated, avoid strenuous activity outdoors, and seek cool, shaded or air-conditioned environments
- Special care for vulnerable groups at higher risk for heat-related illness
Spending time in the shade and indoors will help protect individuals from intense heat during the day. Checking on older adults, those living alone, and at-risk individuals may be necessary during the heat event.
Here's a brief overview of the temperatures for the upcoming days:
- Saturday: High of 31°C, Humidex of 40, Low of 22°C
- Sunday: High of 33°C, Humidex of 39, Low of 22°C
- Monday: High of 32°C, Low of 20°C
- Tuesday: High of 31°C, 40% chance of showers, Low of 19°C
- Wednesday: High of 30°C, 30% chance of showers, Low of 22°C
The afternoon of Saturday and Sunday becomes hazy, with clear skies expected tonight. Overnight lows during the heat event are expected to be 19 to 22 degrees.
These measures align with recommendations from Environment and Climate Change Canada and public health advisories during heat warnings in Canada. Stay safe and take care during this heat event.
- This extended heatwave, as indicated by Environment Canada's warning, is expected to underscore the effects of climate change on the environment, particularly given the significant rise in daytime temperatures and humidex values.
- Understanding the impact of extreme weather events like this heatwave on the environment is the focus of environmental science, emphasizing the need for further research and mitigation strategies in the face of climate-change-induced weather events.
