
Honeylocust
Gleditsia triacanthos
Low today, mostly grass pollen.
Last updated July 9, 2026
Grass pollen is the only real presence in Cambridge today, and it remains at a low level, so most people should get through the day without much irritation. Tree pollen is quiet right now, which is typical for midsummer, so anyone sensitive to grass is likely to notice only mild effects, if any. Looking ahead, grass pollen should stay in the low range through the next several days, holding steady rather than climbing toward anything more troublesome. Tree pollen from species like oak, ginkgo, and liquidambar is well past its spring peak and isn't expected to factor in for now. Overall, this is a fairly calm stretch for allergy sufferers in the area, with grass remaining the main thing to keep in mind as summer continues.
Every dot is a tree near Cambridge, 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 Cambridge. Each bar is that genus's share of the tree pollen.
88 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Cambridge: what each looks like, how allergenic it is, and when it blooms.

Honeylocust
Gleditsia triacanthos

Norway maple
Acer platanoides

Littleleaf linden
Tilia cordata

Red maple
Acer rubrum

Pin oak
Quercus palustris

Green ash
Fraxinus pennsylvanica

Callery pear
Pyrus calleryana

Hedge maple
Acer campestre

Japanese Flowering cherry
Prunus serrulata

Japanese zelkova
Zelkova serrata

London planetree
Platanus x acerifolia

American elm
Ulmus americana

Ginkgo
Ginkgo biloba

Swamp White oak
Quercus bicolor

Northern Red oak
Quercus rubra

Kentucky coffeetree
Gymnocladus dioicus