
Honeylocust
Gleditsia triacanthos
Low today, mostly tree pollen.
Last updated July 28, 2026
Tree pollen is the only type registering in Rochester today, and levels are low. Most people should get through the day without much irritation, though those with a strong sensitivity to tree pollen may notice a mild effect from species like ash, oak, maple, celtis, and honeylocust still present in the air this late in the season. Looking ahead, tree pollen is expected to stay low over the next several days, with a slight dip as the week progresses. This is typical for late July, since the heavier tree pollen season peaks in spring and has largely wound down by now. With summer underway, grass pollen often becomes the bigger concern in this stretch, so it is worth keeping an eye on how you feel outdoors even as tree levels remain quiet.
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