Dillon Davis, 1, of Washington, tries to catch some water from a fountain at Georgetown Waterfront Park, in Washington, on Wednesday, June 20, 2012.
Without proper intervention, heat exhaustion can progress to heat stroke, which can damage the brain and other vital organs, and even cause death.
When the mercury rises to dangerous levels, Chicago's Office of Emergency Management and Communications wants residents to keep the following tips in mind:
If you see someone suffering from heat exhaustion or heat stroke, take immediate action. Call 911 immediately and then try to safely move the person into a cool place and cool the person with water.
OEMC also urges Chicagoans to be good neighbors and check on the disabled and elderly who may not understand the effects of extreme heat, or call 3-1-1 to request well-being checks and rides to cooling centers.