Extreme heat and humidity continued across the Rock River Valley Saturday.
Temperatures reached the the mid-90′s with heat indices expected to peak Saturday near 110- to 115-degrees.
An excessive heat warning is in effect for Northern Illinois until 10 p.m.
According to the National Weather Service, an excessive heat warning means a prolonged period of dangerously hot conditions will occur. High temperatures and humidity will combine to create a dangerous situation in which heat illnesses are likely.
The elderly and those with pre-existing health conditions should take precautions.
Temperatures on Friday reached the low 90′s.
It was enough to keep people away from City Market. With 3,300 visitors, it’s the second-lowest attendance so far this year, event manager Cathy McDermott said. High temperatures on June 15 produced the lowest attendance of the season so far, with 3,100 guests.
Three people were treated for heat exhaustion symptoms Friday and Saturday at Mercyhealth, according to hospital media specialist Sean Muserallo.
OSF St. Anthony Medical Center had no patients treated for heat-related issues Saturday, according to Marketing and Communications Director Mike Robinson
Areas included in the excessive heat warning were Boone, DeKalb, DuPage, Ford, Grundy, Iroquois, Kane, Kankakee, Kendall, LaSalle, Lake, Lee, Livingston, McHenry, Ogle, Will and Winnebago counties.
The weather service released the following precautionary measures:
If possible, reschedule strenuous activities outside.
Stay in an air-conditioned room.
Stay out of the sun.
Know the signs and symptoms of heat exhaustion and heat stroke.
Drink plenty of water.
Check on relatives and neighbors.
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