Weather
Chicago Area Heat Wave: What To Know, How To Stay Cool
"Heat related illnesses increase significantly during extreme heat and high humidity events," the weather service said.
ILLINOIS — Dangerous heat and humidity are expected this week for the Chicago area, and an extreme heat watch will be in effect from Wednesday morning through Thursday evening, according to the National Weather Service.
"Heat related illnesses increase significantly during extreme heat and high humidity events," the weather service said.
Peak heat index values of 115 are possible during the heat wave. Heat indices on Wednesday night will likely stay around 90 degrees, so little to no heat relief is expected until something Thursday night, according to the weather service.
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NWS Chicago issues an extreme heat watch when there is an increasing potential that there will be three days in a row with a peak heat index of 100 to 105, or two days in a row with a peak heat index of 115 to 110 or one day with a peak heat index of 110 or higher, according to the agency.
Staying indoors during heat waves whenever possible is the best way to stay cool. If you must go outdoors, go early or late in the day and dress in light-colored clothing, the weather service advised.
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Signs of heat exhaustion include dizziness, thirst, heavy sweating, nausea and weakness. If you notice these signs, you need to move to a cooler area, loosen clothing and sip cool water. Seek medical help if these symptoms don't improve, according to the weather service.
Signs of heat stroke include confusion, dizziness and becoming unconscious. Call 911, move the person to a cooler area, loosen clothing and remove extra layers, and cool with water or ice.

If any power outages occur during dangerous heat, you can go to the coolest part of the house or building (usually the basement). Keep blinds closed to prevent sun from heating the indoors; and you can reduce your body temperatures by taking a cool shower or bath, or putting hands/feet in cool water.
If you are looking for a cooling center, you can find a list of sites across the state here.
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