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

An Arctic blast of bitter cold is set to hit the eastern half of the country this week as Utah deals with the worst air ...

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 strengthens as stratus deck expands across region. Valley temperatures stuck in 30s while mountains ...

A ridge of high pressure is making for unusual weather patterns.

A persistent high pressure ridge over the West Coast is prolonging a temperature inversion that acts like a lid over Baker ...

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

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

Waking up to bright skies on a fall morning can be a real bonus for us. Why is it every so often even when the forecast calls for fair weather, we find ourselves driving to work under a layer of slate ...

Our latest storm system departed last night and stabilized our atmosphere today. In fact, it was too stable over the eastern sections. Here, a strong temperature inversion which shows up on the skew-t ...

KOIN 6 Chief Meteorologist Josh Cozart explains why this week's temperature inversion is reducing Portland's air quality.