Valley fog expected tonight in Treasure Valley as melting snow adds moisture. Temperature inversion strengthening with patchy ...

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

Treasure Valley inversion remains locked in place through Thursday with valley temps near 31 degrees. Brief relief possible ...

As the cool air sinks, the warm air rises over the top and traps the cold air below. If you travel from downtown Boise to the ...

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

Oregon’s temperature inversion continues as stagnant air, fog, and chilly temperatures remain across much of the Pacific ...

Inversions are still in place across the northern valleys, leading to more haze, poor air quality, & areas of morning fog.

Drive up to Bogus Basin right now and look out over the Treasure Valley; you’ll see a haze hanging over Boise and its surrounding cities. But for those below the haze … the view is not so interesting.

The bottom line? Our stubborn inversion setup will remain in place to start out the workweek with our air quality improved ...

A rare temperature inversion has flipped Bay Area weather, warming mountain ridges while cold, foggy valleys grapple with poor air quality and low visibility.

The weekend is ending with slightly warmer temperatures as the inversion continues through Monday. FOX 13 Meteorologist Nate ...