Des Moines, Iowa – A dome of intense heat is gripping the central U.S., with triple-digit temperatures and sweltering humidity threatening Nebraska, Missouri, and Iowa through at least Monday. Heat index values could climb past 110°F, posing a serious risk of heat-related illnesses across the region.
According to the National Weather Service’s Weather Prediction Center, an upper-level ridge is building over the Central Plains, pushing daytime highs into the 100–105°F range through June 23. Cities like Omaha, Kansas City, and Des Moines are already seeing widespread 90s, with dangerous heat indices exacerbated by high humidity and little overnight relief.
In Lincoln, NE, highs of 102°F are expected Sunday and Monday, while St. Joseph, MO, may break daily records. Across central Iowa, including Ames and Waterloo, weekend temperatures in the mid-to-upper 90s will feel closer to 105°F. Officials urge residents to limit outdoor activity, stay hydrated, and check on vulnerable neighbors and pets.
Cooling centers are open in many cities, and local authorities are asking people to avoid strenuous activities during peak heat hours, typically between noon and 6 p.m.
This early-season heat wave is expected to expand eastward by Tuesday, affecting the Great Lakes and Mid-Atlantic.
