Des Moines, Iowa – Iowa is bracing for a blistering heat wave on Wednesday, with dangerous heat indices climbing to 105°F in cities including Des Moines, Ames, and Carroll. Residents across central and southern Iowa are expected to experience sweltering humidity, with actual temperatures soaring into the low to mid-90s by late afternoon and evening.
According to the US National Weather Service in Des Moines, a statewide heat advisory will remain in effect from 12 p.m. to 8 p.m. Wednesday. The agency is warning that heat illnesses are possible, particularly for those spending extended periods outdoors or working without shade or breaks. Maximum heat index values will peak between 102°F and 105°F in Des Moines, Fort Dodge, Marshalltown, and Ottumwa, while most of Iowa will experience temperatures above 95°F for several hours.
Key highways such as I-35 and I-80 may encounter heat-related pavement issues, which could result in increased emergency calls. Cities like Mason City, Carroll, and Waterloo may open cooling centers for residents. Local schools and childcare centers are urging parents to keep children indoors during the peak heat hours. Utility companies are advising residents to reduce power usage and stay hydrated.
If you must be outdoors, make sure to drink extra water, take frequent breaks in the shade, and never leave children or pets in vehicles, even briefly. Those with chronic illnesses or without air conditioning are at greater risk for heat exhaustion or heat stroke.
The extreme heat is expected to ease overnight, but advisories may be extended if humidity persists. Stay tuned to local updates and be prepared for further warnings throughout the week.
