Extreme Heat Warning

Locations Affected

Springfield, IL ∙ Peoria, IL ∙ Champaign, IL ∙ Decatur, IL ∙ Bloomington, IL ∙ Normal, IL ∙ Herrick, IL ∙ Altamont, IL ∙ Cropsey, IL ∙ Bourbon, IL

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Lincoln IL 103 PM CDT Fri Sep 4 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY... * WHAT...Dangerously hot conditions with heat index values up to around 105 each afternoon. Expect minimal relief overnight with low temperatures in the mid 70s. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...Until 7 PM CDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

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