Heat warning issued as temperatures to soar in Sudbury area

The heat event is expected to start Monday and continue through at least Wednesday evening, high of 36 degrees C expected Tuesday

Article content Residents are being urged to take precautions as a significant heat event is expected to begin Monday, bringing several days of dangerously hot and humid conditions to Sudbury and northeastern Ontario. Environment Canada says daytime high temperatures will range from 30 degrees C to 36 C, with overnight lows remaining from 20 to 23 C, offering little relief from the heat. Humidex values are forecast to reach 38 to 45.

Recommended Videos The heat event is expected to start Monday and continue through at least Wednesday evening, with some areas possibly remaining under warning conditions until Thursday evening. Tuesday is expected to be the hottest day of the stretch, with temperatures in some communities nearing 36 C. In addition to the extreme temperatures, Environment Canada warns that hot and humid conditions could lead to deteriorating air quality, potentially pushing the Air Quality Health Index into the high-risk category.

Health officials are reminding residents that extreme heat can affect anyone, but older adults, young children, people with chronic health conditions and those living alone are particularly vulnerable. People are encouraged to check on family members, neighbours and others who may be at greater risk of heat-related illness multiple times a day, either in person or by phone. Early signs of heat exhaustion can include headaches, nausea, dizziness, thirst, dark-coloured urine and intense fatigue.

Anyone experiencing these symptoms should stop their activity, move to a cooler location and drink water. Heat stroke is a medical emergency. Symptoms can include hot, red skin, dizziness, nausea, confusion and changes in consciousness.

Anyone showing signs of heat stroke should receive immediate medical attention by calling 911. While waiting for help, officials recommend moving the person to a cool location, removing excess clothing and applying cold water or ice packs. Residents are advised to drink water frequently, even before feeling thirsty, and to limit outdoor activities to the coolest parts of the day.

Wearing lightweight, loose-fitting, light-coloured clothing and a wide-brimmed hat can also help reduce heat exposure. To keep indoor spaces cooler, officials recommend closing blinds or shades during the day and opening windows when outdoor temperatures fall below indoor temperatures. Those without air conditioning are encouraged to seek relief in public spaces such as cooling centres, libraries, community centres or shaded parks.

Officials also remind residents never to leave children, vulnerable individuals or pets alone inside parked vehicles, where temperatures can rise rapidly. Environment Canada notes that if wildfire smoke is present during the heat event, people should prioritize staying cool while taking appropriate precautions to reduce smoke exposure. Bluesky: @sudburystar.bsky.social X: @SudburyStar