While inversions are common in the Treasure Valley, this one has lasted an unusually long time. What’s going on? When will it ...

Drive up to Bogus Basin right now and look out over the Treasure Valley; you’ll see a haze hanging over Boise and its surrounding cities. But for those below the haze … the view is not so interesting.

Morning inversion seen from Bogus Basin on Jan. 22, 2026.