Seven-day Treasure Valley forecast shows continued fog pattern through weekend with high pressure maintaining inversions ...

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 ...

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

A strong inversion will likely continue across UT valleys through next week. Air quality & visibility will decrease, especially along the Wasatch Front. Best way to help? Cut back on driving!

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

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

A stubborn ridge of high pressure will remain parked over the region through the rest of the work week and into the weekend, ...

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 ...

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