Weather Alerts For Bertha, MN

Pollen Index: 9.5 Pollen Level: medium-high Predominant Pollen: Maple, Elm and Alder. The quantity of pollen grains in the air for Thursday will remain relatively stable in the high range. This is a result of stable humidity. No change doesn't mean no pollen, it just means that pollen producing plants are delivering pollen at a steady pace.