Health Preparedness

Extreme Heat Alert

Heat can be harmful by pushing the human body beyond its limits. Under normal conditions, the body's internal thermostat causes the body to sweat, which evaporates and cools the body. In extreme heat and high humidity, evaporation is slowed and the body must work harder to maintain a normal core temperature.

Extreme heat or heat waves can be particularly dangerous for children, the elderly, and people who are ill or overweight. A heat wave is defined as three or more days of temperatures of 32°C or more.

During the summer months in Ontario there is the added threat of poor air quality - extreme heat combines with air pollutants from industry, gas-powered vehicles and other sources.

For more information on protecting yourself in extreme heat, follow the link to Wellington-Dufferin-Guelph Public Health.

Tips during an extreme heat emergency:

  • Stay indoors as much as possible.
  • If air conditioning is not available, stay on the lowest floor, out of the sun.
  • Use fans to keep cool.
  • Eat well-balanced, light and regular meals.
  • Drink plenty of water, even if you do not feel thirsty.
  • Limit your intake of alcohol and caffeine.
  • Dress in loose-fitting clothes that cover as much skin as possible when outside.
  • If your home is not air-conditioned, consider spending the warmest part of the day in air-conditioned public buildings, such as libraries, movie theatres, shopping malls, and other community facilities.
  • Check on family, friends and neighbours who do not have air conditioning and who spend much of their time alone.

Pandemic Planning

What is a Pandemic? According to the Ontario Health Plan, a "pandemic influenza is a worldwide outbreak of influenza. It happens when a new influenza virus emerges among the people, spreads, and causes diseases worldwide." In the past, some of the most severe influenzas have resulted from the mutation of animal viruses in humans that have then spread from human to human. 

There are a number of agencies with information on this topic, click on any of the names in the list below to access their websites.

© 2022 County of Wellington, 74 Woolwich St. Guelph, Ontario N1H 3T9, T 519.837.2600, TF 1.800.663.0750, F 519.837.1909