In the summer the combination of high heat and humidity can be dangerous for some people.

Those most at risk include the elderly, people with certain chronic conditions (such as heart or lung problems), people who can't move or change position by themselves, infants and preschool children, people who work or exercise outdoors for a long period of time, and people taking certain medications, especially those for mental health conditions.

For more information on heat and humidity, and tips on preventing heat-related illnesses, please click on the following fact sheets:

• Too Hot! Advice for dealing with hot weather (PDF:336k)
• Summer Safety: How to Beat the Heat (PDF:196k)