The first summer heat wave in Southern California showed signs of breaking Tuesday, with the start of a cooling trend expected Wednesday thanks in part to increased onshore flow. The area’s coastal cities were greeted with dense fog early Tuesday morning as meteorologists warned of suddenly reduced visibility for motorists, boaters and airlines. Temperatures in central L.A. will dip slightly Tuesday -- to 94 degrees -- but will fall below average over the next few days. In the meantime, temperatures will remain above normal in the Valley communities, although not quite as high as they’ve been since Thursday, when the heat wave started. The poor air quality advisory has also been extended through Tuesday for the same areas, with the addition of Orange County.

Source: Los Angeles Times July 16, 2019 17:39 UTC