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 ...

For those hoping to get relief from the inversion, you’ll have to wait until at least early next week, according to the ...

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

Rare rime ice and ground-level ice crystals form across Boise as deep temperature inversion creates perfect conditions for ...

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

Winter weather in Reno is bringing more than just cold temperatures; it is also trapping pollution over the valley through a ...

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

A long stretch of humid heat followed by intense thunderstorms is a weather pattern historically seen mostly in and around ...

This has also lead to the issue of an air stagnation advisory as an inversion has set up. This looks to continue over the ...

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