"Chicago Braces for Sweltering Heat as Officials Issue Alert"

An excessive heat warning has been issued across the US, with Chicago experiencing record-breaking temperatures and high humidity. The heat index is expected to reach 115 degrees, posing a risk to public health. The Chicago Fire Department has added extra ambulances in anticipation of increased emergency calls. Urban areas are particularly vulnerable due to the heat island effect. Officials are urging people to limit outdoor activities, stay hydrated, and take the heat seriously. Chicago Public Schools have implemented a heat action plan, while volunteers are distributing water to help people stay hydrated.