This brochure is intended for deaf people who communicate in sign language, for whom reading can be difficult. It provides basic advice tailored to each age group (children, adults, seniors) as well as useful phone numbers and websites to help avoid the risks associated with heat waves. Health can indeed be at risk when three conditions are met: intense heat, temperatures that do not drop at night or drop only slightly, and this occurring for several days in a row. The document describes the effects of heat waves on the body and ways to protect yourself.