A heat advisory is in effect from noon to 7 p.m. today in south central Iowa. Daytime highs will climb into the mid-90s with heat index values as hot as 105 degrees expected in the afternoon and evening hours. The National Weather Service reminds residents to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. When possible, reschedule strenuous activities to early morning or evening. Wear lightweight and loose fitting clothing and to reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location.