Temperatures are expected to top out at 100 to 105 degrees Thursday and Friday, but the heat index could top out at 108 to 118 degrees, according to the National Weather Service.
An excessive heat warning is in effect for Plainfield until 10 p.m. Friday.
An air quality alert has also been declared for Thursday and Friday. Elevated ozone levels and poor air quality will increase the stresses on the body from the heat. This is true especially for children, the elderly and those with pulmonary or respiratory conditions. These groups should limit their exposure to outdoor air until Saturday.
Prolonged exposure to the heat will be dangerous, according to the NWS, and can cause sunstroke, heat cramps or heat exhaustion.
If you need to work outside, reschedule activities for early morning or evening. Wear light-weight and loose-fitting clothing and drink plenty of water.
Take frequent breaks in shade or in an air-conditioned space.
Stay out of the sun and check on relatives and neighbors. Pets and children should not be left unattended in cars as the interior can reach lethal temperatures in a matter of minutes.
In Plainfield, residents can seek shelter from the heat at the Plainfield Police Department, 14300 Coil Plus Drive. The center is open anytime a heat advisory is in effect. For more information, call 815-436-2431.
Click here to see a complete list of Will County cooling centers.
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