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

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

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

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 ...

KOIN 6 Chief Meteorologist Josh Cozart explains the temperature inversion seen around Mt. Hood Wednesday afternoon, January 21, 2026.

There can be long stretches throughout the year, especially during the winter, when it doesn't seem like the clouds want to break up. The lack of sunshine can come from what meteorologists call a ...

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

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

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