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 ...

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

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