Extreme Heat Warning

Locations Affected

Chicago, IL ∙ Cicero, IL ∙ Evanston, IL ∙ Arlington Heights, IL ∙ Schaumburg, IL ∙ Palatine, IL ∙ Skokie, IL ∙ Des Plaines, IL ∙ Oak Park, IL ∙ Oak Lawn, IL

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Chicago IL 906 PM CDT Sun Jun 22 2025 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY NIGHT... * WHAT...Dangerously hot and humid conditions with high temperatures well into the 90s and afternoon heat index values between 100 and 105 degrees expected Monday afternoon. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until midnight CDT Monday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. The magnitude of anticipated heat, combined with oppressive warmth at night will lead to hazardous conditions, particularly for the elderly and those with pre-existing health conditions. Residents of the city of Chicago can call 3 1 1 to request well being checks for elderly friends or family members, or for information on finding the nearest cooling center. * ADDITIONAL DETAILS...Heat impacts will be worsened by consecutive days of hot and humid conditions, with overnight lows near 80 degrees providing limited relief. 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. 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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