Headline:
Extreme Heat Warning issued June 30 at 1:51AM CDT until July 3 at 12:00AM CDT by NWS Chicago IL
Event:
Extreme Heat Warning
Urgency:
Expected
Effective:
June 29, 2026 - 11:51pm
Expires:
June 30, 2026 - 10:00am
Description:
* WHAT...Dangerously hot conditions with heat index values around
105 expected each afternoon.
* WHERE...Portions of central, east central, north central, and
northeast Illinois and northwest Indiana.
* WHEN...Until midnight CDT /1 AM EDT/ Thursday Night.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...Dangerous heat is now expected to persist
through Thursday. Thunderstorms may begin to bring some relief
from the heat for portions of northern Illinois by Thursday
afternoon or evening.
Instruction:
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.
Area Description:
Winnebago; Boone; McHenry; Lake; Ogle; Lee; De Kalb; Kane; DuPage; La Salle; Kendall; Grundy; Kankakee; Livingston; Iroquois; Ford; Northern Will; Southern Will; Eastern Will; Lake; Porter; Newton; Jasper; Benton
Forcast Office:
NWS Chicago IL
Sender: