
Ash
Fraxinus pennsylvanica
Very low today, mostly weed pollen.
Last updated September 30, 2026
Pollen levels across Bloomington remain quiet today. Tree pollen is absent entirely, and weeds are contributing only a very light presence in the air. For most people, today should pass without any noticeable irritation, even for those who tend to be sensitive to ragweed and other late-season weeds. Looking ahead, weed pollen is expected to tick upward over the next couple of days before settling into a more moderate range through the rest of the forecast period. This fits the typical pattern for early autumn in the Twin Cities, as ragweed and related weeds wind toward the tail end of their season. Tree pollen should stay quiet, since local varieties like oak, maple, juniper, celtis, and juglans have long finished their spring release and won't become active again until next year.
Every dot is a tree near Bloomington, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.
The local tree genera behind today's pollen near Bloomington. Each bar is that genus's share of the tree pollen.
753 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Bloomington: what each looks like, how allergenic it is, and when it blooms.

Ash
Fraxinus pennsylvanica

Elm
Ulmus americana

Maple
Acer platanoides

Linden
Tilia americana

Maple
Acer saccharum

Linden
Tilia cordata

Honeylocust
Gleditsia triacanthos

Hackberry
Celtis occidentalis

Ginkgo
Ginkgo biloba

Maple
Acer rubrum

Maple
Acer saccharinum

Oak
Quercus ellipsoidalis

Oak
Quercus palustris

Elm
Ulmus

Oak
Quercus rubra

Oak
Quercus bicolor