Des Moines, Iowa – Iowa is bracing for a blistering heat wave Wednesday, with dangerous heat indices climbing to 105° in cities including Des Moines, Ames, and Carroll. Residents across central and southern Iowa should expect 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 remains in effect from 12 p.m. until at least 8 p.m. Wednesday. The agency warns that heat illnesses are possible—especially for those spending extended time outdoors or working without shade or breaks. Maximum heat index values will peak between 102° and 105° in Des Moines, Fort Dodge, Marshalltown, and Ottumwa, while most of Iowa will feel above 95° for several hours.
Key highways—including I-35 and I-80—could see heat-related pavement issues and increased emergency calls. Cities such as Mason City, Carroll, and Waterloo may see community cooling centers open. Area schools and childcare centers are urging parents to keep children indoors during peak heat, while utility companies advise residents to reduce power usage and stay hydrated.
If you must be outside, 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 most at risk for heat exhaustion or heat stroke.
The excessive heat is expected to ease overnight, but advisories could be extended if humidity lingers. Stay tuned to local updates and be prepared for further warnings through the week.
