Heat Advisory
2026-07-21T19:00:00-05:00
2026-07-21T19:00:00-05:00
* WHAT...Heat index values of 100 to 110 degrees. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...This is the fourth straight day with heat index values of 100 degrees or higher over parts of the area.
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