An extreme heat event is in effect for the Canada Day long weekend. It will continue over the 3 day holiday weekend with daytime highs in the the low to mid thirties with humidex values into the mid forties. Overnight low temperatures are expected to be in the low to mid twenties, except high teens in some rural areas, providing little or no relief from the heat.
This will be the most significant heat event in the past few years.
Extreme heat affects everyone. The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors. Watch for the effects of heat illness: swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
Source: Environment Canada
Graphic: Environment Canada