Confidence for Wednesday through Friday is high to very high for heat index values across Iowa to reach the 105 to 115. Heat index values of 95 to 100 degrees may last into and throughout the weekend. Excessive heat could lead to severe heat related illnesses and possibly death if proper action is not taken.
An excessive heat watch means that a prolonged period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are possible. 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 pets and/or children in unattended vehicles.