Active Weather Alerts
Extreme Heat Watch
Issued: 8:48 AM Jul. 21, 2025 – National Weather Service
...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions with heat index values of 105 to 110 possible. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...From Wednesday morning through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Heat indices late Wednesday night are not likely to drop much below 90 degrees, particularly in the city. Therefore, little to no heat relief is expected until sometime Thursday night. 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. &&
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