Why ‘Mountain Breeze’ Creates Poor Air Quality In Colorado’s Central Mountains

By Chris SpearsSUMMIT COUNTY, Colo. (CBS4)– Alerts for air quality continue in Colorado’s central mountains, including the counties of Eagle, Summit, Grand and Lake.
For places like Breckenridge, which sits in a large valley, the daily cycle of wind plays a huge role in creating the poor conditions.(credit: CBS)
As the sun rises each day and heats the mountainsides and valley floor, air begins to rise, flowing up the slopes. This is called a valley breeze because it originates at the