
Honeylocust
Gleditsia triacanthos
Low today, mostly tree pollen.
Last updated September 30, 2026
Tree pollen is the more noticeable presence in Rochester today, though it remains at a low level overall. Sensitive individuals may catch a mild trace from trees like ash, oak, maple, celtis, and honeylocust, but for most people conditions should feel comfortable enough for normal outdoor activity. Weed pollen is present as well, but at such a low level that it is unlikely to cause much reaction. Looking ahead, tree pollen should hold steady at this same low level, and weed pollen is expected to remain quiet through the next few days. This lines up with what is typical for late September, as the main tree pollen season wrapped up months ago and ragweed, the primary fall weed culprit, is winding down as autumn progresses. Overall, this is a fairly easy stretch for allergy sufferers in the area.
Every dot is a tree near Rochester, 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 Rochester. Each bar is that genus's share of the tree pollen.
633 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Rochester: what each looks like, how allergenic it is, and when it blooms.

Honeylocust
Gleditsia triacanthos

Northern red oak
Quercus rubra

Little leaf linden
Tilia cordata

Sugar maple
Acer saccharum

Black walnut
Juglans nigra

White oak
Quercus alba

London planetree
Platanus acerifolia

Red maple
Acer rubrum

Austrian pine
Pinus nigra

Green ash
Fraxinus pennsylvanica

Sweetgum
Liquidambar styraciflua

Swamp white oak
Quercus bicolor

Pin oak
Quercus palustris

Silver maple
Acer saccharinum

Tuliptree
Liriodendron tulipifera

Blacklocust
Robinia pseudoacacia