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

Add Yahoo as a preferred source to see more of our stories on Google. A shallow marine inversion kept polluted air trapped in the L.A. Basin for days. (Paul Duginski / Los Angeles Times) One good ...

Take a drive up to Bogus Basin during the winter and look out over the Treasure Valley and you may see a haze hanging over Boise and its surrounding cities. But for those below the haze … the view is ...

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