The bottom line? High pressure ridge continues to build with declining air quality in northern valleys but rebounding temperatures in central and southern Utah.

While inversions are common in the Treasure Valley, this one has lasted an unusually long time. What’s going on? When will it end?

The bottom line? A big ridge of high pressure has set up shop across the western U.S. leading to inversion haze, bad air ...

It didn't take long for air quality to plummet across the Wasatch Front and surrounding regions from the latest inversion setup.

Lack of atmospheric circulation will trap pollutants near the surface Likely to have air quality worsen through the week A slight blocking pattern is setting up from a ridge of high-pressure that will ...