Active Weather Alerts
Extreme Heat Warning
Issued: 7:30 AM Jul. 1, 2026 – National Weather Service
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY NIGHT... * WHAT...Dangerously hot conditions with peak afternoon heat index values of 102 to 107 degrees. * WHERE...Cook County. * WHEN...Until midnight CDT Thursday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Stifling heat will continue even at night with heat indices remaining above 90 degrees until midnight or just after. 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. 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. &&
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