Casey Realtime Data

× Extreme Heat Warning
Until 2026-07-27T21:00:00-05:00 • National Weather Service
* WHAT...Dangerously hot conditions with heat index values up to 112. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Thunderstorms could move into area late this afternoon or evening, cooling temperatures and heat indices.