Horsley said high temperatures in the 90s are expected throughout the weekend.

The heat is not only taking a toll on people, though. An SIUC Physical Plant official said the weather takes its toll on air conditioning.

Harry Wirth, director of plant services at the Physical Plant, said the humidity is putting a strain on the Physical Plant’s cooling power. Although current needs are being met, Wirth said things would be difficult if all the students living in dormitories were not away for the summer.

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If we had to cool all the student housing, we would have a problem, he said.

The National Weather Service forecasts a high in the upper 90s again today with a little less humidity than Thursday.