While inversions are common in the Treasure Valley, this one has lasted an unusually long time. What’s going on? When will it ...
A shallow marine inversion kept polluted air trapped in the L.A. Basin for days. (Paul Duginski / Los Angeles Times) One good thing about Santa Ana winds: They really clear the air. During the first ...
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Inversion from Bogus Basin

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