WHAT
Heat index values up to 105 expected.

WHERE
Portions of north central, northwest, and west central Illinois.

WHEN
From noon Saturday to 8 PM CDT Monday.

IMPACTS
Hot temperatures and high humidity may cause heat illnesses.

ADDITIONAL DETAILS
Heat impacts will be worsened by several consecutive days of sweltering temperatures, with little relief overnight as lows will only be in the mid to upper 70s.

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.