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Chicagoans can expect a hot, humid and stormy week, according to the National Weather Service.

Thunderstorms developed moving into Monday evening, with the potential to cause local downpours and lightning. The Federal Aviation Administration issued a ground stop at O’Hare International Airport until 3:45 p.m. on Monday due to the storms.

No severe weather was expected, according to the weather service.

Portions of northern Illinois face potential thunderstorms every day through Friday, according to the weather service. Temperature highs are forecast to range between the 80s and 90s through Friday. Weather service meteorologist Zachary Yack said he expects the more severe thunderstorms to be done by the end of Wednesday, and even those will be “run of the mill.”

Tuesday and Wednesday will be especially hot. Chicago and the collar counties may feel anywhere from 90 to 100 degrees, according to the weather service. South of Kankakee, it could feel as hot as 105 degrees. Conditions may get a bit better by Thursday as a front moves in, the weather service said.

Yack said this week’s temperatures could be classified as a heat wave, although he would call it more of a “warm and humid stretch.”

“If you are someone who is sensitive to heat, make sure you take frequent breaks, stay hydrated,” Yack said. Weather officials also advise applying sunscreen every two hours and avoiding alcohol when hot out.

Conditions at Chicago’s Midway Airport Monday afternoon were 88 degrees and mostly cloudy. It was 84 degrees at O’Hare Airport, with partly cloudy skies overhead.