As a cold front moves through the Southwest today, we’ll experience gusty Santa Ana winds, low relative humidity, cooler temperatures and poor air quality. Because of elevated dust and dirt, the only advisory for the Coachella Valley is an Air Quality Alert which has been posted through Thursday afternoon. Valley highs will peak in the 70s today and tomorrow, 80s for the weekend. See images for details. @JerrySteffen @NBCPalmSprings…