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 ...

Happy Sunday, Utah! Calm weather conditions are expected through Sunday and the workweek as high pressure continues to build ...

This week the sunshine will be in full force with this high pressure system. With that, an inversion will form with air ...

Dense Fog Advisory issued for western Idaho's Treasure Valley as strengthening inversions trap cold air and create hazardous ...

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

Western Idaho remains locked in stagnant weather with expanding valley fog and temperature inversions creating contrasting ...

Inversions will continue this week with decreasing air quality, especially along the Wasatch Front. Slight improvement is ...

Midwinter has slipped into a quiet but stubborn rhythm. A strong dome of high pressure remains locked in place, and with it comes an extended stretch of dry weather that shows little interest in break ...

With that, an inversion will form with air stagnation, so be on alert for air quality alerts this week. Winds will also be ...

A ridge of high pressure will be centered over the region through the weekend, continuing a pattern of quiet, stable and ...

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