Pollen Alerts For Stewartville, MN

Pollen Index: 11.1 Pollen Level: high Predominant Pollen: Alder, Elm and Poplar/Aspen/Cottonwood. Concentration of pollen grains in the air for Wednesday will be on the increase and extend even further into the extremely high range. This is likely to be caused in part by rising temperatures, strong winds and lower relative humidity.