A persistent inversion layer trapping freezing fog across the Rogue Valley has significantly reduced morning visibility, yet ...

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

KOIN 6 Chief Meteorologist Josh Cozart explains why Portland's temperature inversion is causing poor air quality across the ...

The department says these roads are not meant for that kind of traffic ...

Protesters gathered at the U.S. Immigration and Customs Enforcement office on Tuesday to voice their opposition to recent ICE ...

High pressure overhead is diverting clouds and wet weather to our north. Under this high pressure, a bit of an inversion is ...

LOGAN – City officials here are warning local residents to expect deteriorating air quality in Cache Valley for at least the ...

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 ...

Tuesday is anticipated to be the warmest day with highs climbing well into the 50s, with a few locations perhaps cracking the ...

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

We explain the record-breaking ridge of high pressure setting up over British Columbia. The atmospheric pattern is creating a ...