Well-being checks have started in Palos Park as forecasters predict possibly record-breaking temperatures.
Thermometers in the Palos area reached the high 90s Tuesday afternoon. The heat index could reach 100 before the heat breaks in the evening.
Local officials are advising people to pay extra attention to those who are prone to heat illness, including pets, young children and the elderly. Those who work outdoors or in hot buildings need to take additional precautions.