Salt Lake has the worst air in the world as wildfire smoke moves in

There may be some clearing on Friday night, according to the National Weather Service.

(Chris Samuels | The Salt Lake Tribune) Heavy smoke from wildfires in the Western U.S. descend on the Salt Lake Valley, Friday, Aug. 6, 2021.

(Chris Samuels | The Salt Lake Tribune) Heavy smoke from wildfires in the Western U.S. descend on the Salt Lake Valley, Friday, Aug. 6, 2021.

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