WHAT
Dangerously hot and humid conditions with multiple days of heat index values of 100 to 110 expected, along with nighttime lows not falling below the mid to upper 70s.
WHERE
Portions of north central and northwest Illinois and east central and northeast Iowa.
WHEN
Until 10 PM CDT Wednesday.
IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events.
ADDITIONAL DETAILS
The extreme heat may persist through late week, but thunderstorms and associated clouds may interrupt the heat at times Thursday and Friday.
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.
