An excessive heat warning is in effect from 10 a.m. Friday until 7 p.m. Saturday, according to the National Weather Service.
Temperatures are expected to reach 93 to 96 degrees Friday and Saturday, with the heat index, or how how it really feels outside, to be up to 110 degrees Friday and Saturday.
This could lead to heat-related illnesses with prolonged exposure. Officials said those without air conditioning, the elderly, small children and pets are especially susceptible. They are asking people to have a cool place to shelter from the heat, and avoid outdoor activity, especially strenuous ones, during the peak heating times of the day.
Information on county cooling centers can be found at https://www.mchenrycountyil.gov/county-government/departments-a-i/emergency-management.