Here is a list of Utah's the longest-recorded inversions documented by the U researchers: Longest inversion event period (1956-2010): Dec. 16, 1985 — 14.5 days. Jan. 28, 1984 — 10 days.

As chilly temperatures mark the start of Utah’s holiday season, they also bring an unwelcome visitor to the state’s northern valleys — inversions and the dirty air trapped inside them.

Inversions can last for multiple days leading to poor air quality as the pollution accumulates near the surface, Becky Close, the policy manager at Utah's Department of Environmental Quality, said.

As chilly temperatures mark the start of Utah’s holiday season, they also bring an unwelcome visitor to the state’s northern ...

A weak storm is expected to move through northern Utah later in the week and could sweep some of the inversion away. Air quality map of Salt Lake Valley as of 10 a.m. Monday ...

Bryce Bird, director of the Utah Division of Air Quality, said the current inversion is expected to linger for most of the week if not longer. Monday's conditions weren't as bad.

During a winter inversion, the amount of ammonium nitrate alone rises from about 45 percent of the Salt Lake Valley’s fine particle pollution to as much as 75 percent, according to Patrick Barickman, ...

Maps. Cameras. Ski Report. 2News Weather App. Sports. Features. Game Center. ... due to the Beehive State's cloud coverage along with the thick inversion Utah has been experiencing the last couple ...

Unhealthy air will continue to plague much of Utah until Friday, when a “significant” snowstorm is expected to clear out lingering Wasatch Front and Cache Valley inversions.

Winters in Utah usually come with inversions, smoggy lines of stagnant pollution dividing the Salt Lake Valley. And often, during the summer, the mountains become fuzzy with wildfire smoke. On bad ...

A University of Utah study shows that burning wood emits thousands of times more particulate matter than natural gas and contributes to inversions. Don't drive on peak inversion days. Carpool, combine ...