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Excessive High Heat

August 2 - An excessive high heat alert has been issued for Niagara Region

An excessive high heat alert in the Niagara area is initiated in the following circumstances:

  • The humidex is forecast to rise to 40° C or higher
  • The humidex is forecast to rise to 38° C or higher, and a smog alert
  • Environment Canada issues a humidex warning for the Niagara area

Precautions to Take during Excessive High Heat

During an excessive high heat alert, residents should:

  • Plan your activities before noon or in the evening
  • Rest frequently in shaded areas
  • Drinking plenty of fluids (unless fluid is restricted by your physician)
  • Never leave infants, children or pets in a parked car
  • Dress in cool, loose clothing and shade your head with a hat or umbrella

Heat Stroke is a Medical Emergency

Call 911 if you are caring for someone who has a high body temperature and is either unconscious, confused or has stopped sweating.

A person with heat stroke may feel one or more of the following symptoms:

  • Confusion
  • Dizziness
  • Nausea
  • Muscle swelling
  • Heart disturbances
  • Headache

Other symptoms include seizure, unconsciousness and/or coma. Seek immediate medical attention for heat stroke.

People at High Risk during Excessive High Heat

Infants, children, the elderly, people with high blood pressure, people with heart and/or respiratory problems and those who work or exercise outdoors are at possible risk of developing heat-related illness.

Heat-related illness occurs in three stages:

  • Heat cramps
  • Heat exhaustion
  • Heat stroke

Check on elderly or shut-in neighbours during an Excessive High Heat Alert. You could save a life.


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