Minneapolis, MN Pollen Levels Today

Minneapolis sits in a humid continental climate zone, producing four distinct allergy seasons shaped by cold winters, warm summers, and abundant deciduous tree cover along the Mississippi River corridor.

Tree pollen kicks off the year, typically emerging in late March and peaking from mid-April through May, with box elder, oak, birch, maple, ash, cottonwood, elm, and poplar driving the highest counts.

As trees taper off, grass pollen takes over from late May through July, dominated by Kentucky bluegrass, timothy, orchard grass, and brome — all widespread across Minnesota's lawns, parks, and surrounding agricultural areas.

The overlap between late tree season and early grass season in May and June can significantly intensify symptoms for multi-sensitive individuals.

Weed season follows in August and runs through the first hard frost in October, with short and giant ragweed as the primary culprits, supplemented by lamb's quarters, pigweed, and sagebrush.

Beyond pollen, Minneapolis residents contend with high outdoor mold spore counts fueled by humid summers, leaf litter in fall, and melting snow in spring, while indoor dust mites thrive during the long heating season.

Overall, Minneapolis presents a robust, full-spectrum allergy profile defined by heavy tree loads, persistent ragweed, and significant mold pressure.