The Minnesota Pollution Control Agency has expanded the air quality alert for east central and southeastern Minnesota to include the North Shore and Duluth area. The alert is effective until 6 p.m. on Tuesday. The affected area includes the Twin Cities, Albert Lea, Rochester, Mankato, Hinckley, Duluth, Two Harbors, and the tribal nations of Prairie Island, Mille Lacs, Fond du Lac, and Grand Portage.