Any bit of sunshine in the forecast today will be met with not just extra clouds but also some haze and upper level smoke. Overnight into Thursday morning, we'll see lesser smoke and improved air quality.

The return of wildfire smoke from fires burning in Canada has sparked another air quality alert in Minnesota, which will be in effect through Tuesday. The Minnesota Pollution Control Agency has placed the northern two-thirds of the state in the red alert zone,

The air in southern and central Minnesota, including Rochester and the Twin Cities, is expected to be unhealthy for sensitive groups.