Be careful going outside today. The work week is starting off with an air quality advisory. Smoke from a wildfire in Butte County is drifting into the Bay Area, creating hazy skies. Officials urge anyone impacted by smoke in their area to stay inside if possible. This comes as crews fight two local fires. One near Concord is almost fully contained at 470 acres, while the other in Sunol is up to 734 acres and 25-percent containment.