
Ashgreen
Fraxinus pennsylvanica
Moderate today, mostly tree pollen.
Last updated August 14, 2026
Tree pollen is the main source of allergy activity in Sioux Falls today, sitting at a moderate level that could be noticeable for those who are sensitive. Ash, maple, oak, celtis, and cottonwood are the trees contributing to this, though this late in the season their output is on the milder side compared to spring peaks. Weeds remain very quiet for now, so most of any discomfort today is likely tied to lingering tree pollen rather than anything else in the air. Looking ahead, tree pollen should ease gradually over the next several days, tapering toward low levels by the end of the stretch as the season winds down. Weed pollen, on the other hand, is expected to climb, moving from very low up to a high level by midweek before easing slightly again. This shift reflects the typical late-summer pattern for the region, as ragweed and other weeds begin to take over as the dominant allergy trigger while tree pollen fades into the background.
Every dot is a tree near Sioux Falls, 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 Sioux Falls. Each bar is that genus's share of the tree pollen.
562 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Sioux Falls: what each looks like, how allergenic it is, and when it blooms.

Ashgreen
Fraxinus pennsylvanica

Walnutblack
Juglans nigra

Ashgr mrshl sdls
Fraxinus pennsylvanica

Hackberrycommon
Celtis occidentalis

Maplnorway
Acer platanoides

Honeylocust
Gleditsia triacanthos

Ashgr summit
Fraxinus pennsylvanica

Maplfrman aut bl
Acer freemanii

Oakbur
Quercus macrocarpa

Reg prin oak
Quercus warei

Redcedareastern
Juniperus virginiana

Maplsugar
Acer saccharum

Kntky coftree esp
Gymnocladus dioicus

Lindenamer fastg
Tilia americana

Pinescotch
Pinus sylvestris

Ashgr patmore
Fraxinus pennsylvanica