⚠️ Extreme Heat Watch – Clinton; Washington; Randolph; Madison; St. Clair; Monroe; St. Charles; St. Louis; St. Louis City – Sunday, August 30, 2026

Extreme Heat Watch issued August 30 at 12:27PM CDT until September 4 at 8:00PM CDT by NWS St Louis MO

Details

* WHAT…Dangerously hot conditions with heat index values of 102 to
108 degrees, and morning lows from 75 to 80 degrees, possible for
several consecutive days.

* WHERE…In Illinois, Clinton IL, Washington IL, Madison IL, Monroe
IL, Randolph IL, and Saint Clair IL Counties. In Missouri, Saint
Charles MO, Saint Louis City MO, and Saint Louis MO Counties.

* WHEN…From Monday afternoon through Friday evening.

* IMPACTS…Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS…In addition to near-record afternoon
temperatures, warm morning lows may provide little relief,
especially Wednesday through Friday.

Instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Monitor the latest forecasts and warnings for updates.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.