
Air quality is expected to reach the orange AQI category in central and southern Minnesota, which is unhealthy for sensitive groups.
An air quality alert continues for central and southern Minnesota. The alert runs until 11 p.m. on Thursday, June 12. The affected area includes the Twin Cities metro area, Alexandria, Albert Lea, Marshall, Worthington, Rochester, St. Cloud, Winona, Ortonville, Mankato, and the Tribal Nations of Upper Sioux, Prairie Island, and Mille Lacs.
Smoke from wildfires in northwest Canada that moved into central and southern Minnesota behind a cold front will continue to impact air quality in this portion of the state on Thursday. Fine particle levels in the unhealthy for sensitive groups air quality index (AQI) category are expected to continue Thursday across central and southern Minnesota. This smoke will linger along a frontal boundary that has stalled over the southern part of the state. The smoke has moved south, and air quality has improved across north central Minnesota. The alert has been cancelled in the area. Smoke has moved into southeast Minnesota, and the alert has been expanded to include this portion of the state. Rainfall is expected across this same region through Thursday, and this may help reduce smoke levels in some areas. However, it's possible this smoke may linger through the end of the day on Thursday.
Fine particle levels are expected to reach the orange AQI category, a level considered unhealthy for sensitive groups, across central and southern Minnesota. In the orange area, sensitive groups should limit prolonged or heavy exertion and time spent outdoors.