Dardenne Prairie Realtime Data

× Heat Advisory
Until 2026-07-20T17:15:00-05:00 • National Weather Service
* WHAT...Heat index values up to 108. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 7 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.