Very Low Pollen in Cambridge, MA

About pollen in Cambridge

Pollen levels around Cambridge remain quiet today. Tree pollen is absent, and weed pollen is only present at a very low level, so most people should notice little to no effect even if they're typically sensitive to allergens this time of year. Looking ahead, this pattern is expected to hold steady over the next several days, with weed pollen staying at a very low level and tree pollen remaining absent. This fits the season well: local trees such as oak, mulberry, birch, ailanthus, and horse chestnut finished releasing pollen months ago, and their next active period won't arrive until spring. The mild weed presence now reflects the tail end of the late-summer and fall ragweed season, which is winding down as cooler weather sets in.

What to do today

• Pollen levels are very low right now. It's a great day to enjoy the outdoors!

Tree map

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.

Top tree-pollen sources

The local tree genera behind today's pollen near Cambridge. Each bar is that genus's share of the tree pollen.

Meet the trees near you

Get to know the tree types growing around Cambridge: what each looks like, how allergenic it is, and when it blooms.

Honeylocust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring

Littleleaf linden

Tilia cordata

Allergenicity 2/4Blooms summer

Red maple

Acer rubrum

Allergenicity 3/4Blooms spring

Pin oak

Quercus palustris

Allergenicity 4/4Blooms spring

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring

Callery pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Hedge maple

Acer campestre

Allergenicity 3/4Blooms spring

Japanese Flowering cherry

Prunus serrulata

Allergenicity 1/4Blooms spring

Japanese zelkova

Zelkova serrata

Allergenicity 2/4Blooms spring

London planetree

Platanus x acerifolia

Allergenicity 4/4Blooms spring

American elm

Ulmus americana

Allergenicity 3/4Blooms spring

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring

Swamp White oak

Quercus bicolor

Allergenicity 4/4Blooms spring

Northern Red oak

Quercus rubra

Allergenicity 4/4Blooms spring

Kentucky coffeetree

Gymnocladus dioicus

Allergenicity 2/4Blooms spring

Common questions

What is the pollen count in Cambridge, MA today?

Cambridge, MA is at a very low 1 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. The five-day outlook holds steady around 1 of 5.

Is weed pollen high in Cambridge, MA right now?

Weed pollen is very low today at 1 of 5, and it's past its peak season. Most people won't notice it.

What plants are causing allergies in Cambridge, MA?

The main sources right now are Oak, Mulberry, Birch, Ailanthus, and Aesculus.