Hourly Weather - Casper, United States

At a Glance Chicago hit its highest heat index in 28-plus years.Heat waves are becoming more frequent.Many families have struggled to pay utility bills as temperatures rise. NEW: Get breaking news delivered straight to your desktop or mobile phone. M​illions of people in the heart of the United States are baking under a late-summer heat wave that has shut down schools, canceled outdoor activities and caused a spike in emergency room visits. "At one time Wednesday, excessive heat warnings -...