The first excessive heat warning of the Summer has been issued, with some areas seeing temperatures in the triple digits for the next few days. Heat-related illnesses become a concern. In fact, about 80 people were treated at the St. Louis Cardinals baseball game yesterday for heat-sickness. Health officials say it’s important to drink plenty of fluids, wear light-colored and light-weight clothing, take frequent brteaks, and don’t be afraid to find a cool place.