IPR Iowans across the state are being urged to limit their heat exposure this week due to dangerously hot weather. The conditions are especially concerning at some of the state's prisons, which lack air conditioning. Dangerously high heat is posing a threat to vulnerable people throughout Iowa this week, with high humidity sending heat indices soaring well above 100 degrees in some areas. The extreme temperatures are especially concerning for some of the state’s prisons, which lack air conditioning. Iowans across the state are being warned to limit their exposure to the heat and to seek out air conditioned areas in order to prevent heat-related illness and even death.