how long will it stay

Smoke was expected to be heaviest in Utah on Wednesday.
(Francisco Kjolseth | The Salt Lake Tribune) Smoke billowing from wildfires in the Pacific Northwest obscures the Salt Lake Valley horizon on Wednesday, August 30, 2023.
Smoke from wildfires in the Pacific Northwest spread across the Wasatch Front on Wednesday and could persist through at least Thursday night.
The smoke was concentrated across northwest Utah around 7 a.m. Wednesday and is expected to spread across the northern half of the state by Wednesday afternoon. The smoke will clear around 5 p.m., according to the National Weather Service.
The haze is likely to linger over the Wasatch Front on Thursday — and potentially as far south as Millard County — but should clear out of Utah by Thursday night, Salt Lake City meteorologist Sam Webber said. He estimated that only a few northern areas of the state would see smoke by the end of Thursday’s day.
“We’ve got a storm coming this weekend that will clear it all up,” Webber added.
After storms expected for this weekend, more smoke could rise through Utah early next week depending on fire behavior in Oregon and California, Webber said.
Utah Wildfire Info officials urged sensitive individuals to do so limit your time outside while the smoke drifts through the area.