Extreme Heat

Responding to an Extreme Heat Event

  • During an extreme heat event seek out an air-conditioned place to stay cool.   
  • Avoid engaging in any high-energy activities. 
  • Wear loose, lightweight, light-coloured clothing.
  • Drink plenty of fluids and stay hydrated.
  • Never leave a child or animal alone in a vehicle. 
  • Call 911 if you or anyone around you experiences an altered level of consciousness.

During heat-related emergencies, be sure to check the status of your campus in case U of T operations are affected.


Many buildings on campus have air conditioning where you can cool down. Locally – libraries, community centers, and shopping malls can also serve as cooling sites.

Extreme heat can worsen chronic conditions including respiratory disease and cardiovascular disease. It can also result in heat-related illness. Signs of heat-related illness include:

  • Heat rash can present as clusters of small blisters on the skin
  • Heat cramps can take the form of muscle pains and spasms in the abdomen, arms, or legs.   
  • Heat exhaustion can include heavy sweating, pale skin, weakness, dizziness, headache, fainting, nausea and vomiting.   
  • Heatstroke can cause hot, red skin without sweating, a high body temperature, a fast heart rate, dizziness, nausea, confusion and a loss of consciousness.  

If heat-related illnesses occur, go to a cooler location, remove excess clothing, and take sips of cool water and/or sports drinks. Loosen clothes or use cool wet cloths to lower body temperature. Do not try to provide food or fluids to someone who has lost consciousness or is near fainting. If there is any altered level of consciousness, or heatstroke is suspected, call 911 immediately.

Important Contacts

Emergency: 911

Campus Safety
St. George/UTSC: 416-978-2222
UTM: 905-569-4333

Campus Safety
St. George: 416-978-2323
UTSC: 416-287-7398
UTM: 905-828-5200

Other Incident Response Guides

Active Attacker
Medical Emergencies
Suspicious Packages
Cyber Incidents
Gas Leak
Power Outages
Civil Disturbances
Extreme Weather