Knoxville Realtime Data

× Extreme Heat Warning
Until 2026-09-03T16:15:00-05:00 • National Weather Service
* WHAT...Dangerously hot conditions with heat index values up to 105. * WHERE...Portions of central, east central, and west central Illinois. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.