The Utah Division of Air Quality on Tuesday is declaring Tuesday as a yellow air day for Box Elder, Salt Lake, Tooele, Utah and Weber counties in northern Utah. The same warning is being issued for Washington County in the southwestern corner of the state.
The department is encouraging people to reduce driving and other activities that increase pollution. People sensitive to bad air, including the elderly or anybody with a lung disease, should limit their outdoor activity.
Salt Lake City reached 90 degrees on Friday, which is about 18 degrees higher than the average temperatures in May.
The air is expected to improve Wednesday as temperatures begin to drop.
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