Very Low Pollen in Cambridge, MA

Very low today, mostly tree pollen.

Last updated August 15, 2026

Today's index1out of 5Very Low
TreeVery Lowin season
WeedVery Lowoff-season

Driving it today

GinkgoGinkgoOakQuercusHamamelisHamamelisLiquidambarLiquidambarLarixLarixElm

Forecast

Sun
1
Mon
1
Tue
1
Wed
2

About pollen in Cambridge

Pollen levels around Cambridge are quiet today, with both tree and weed sources registering very low. Neither should cause much trouble for most people, and even those with sensitivities are unlikely to notice much of an effect. Looking ahead, conditions are expected to hold steady over the next several days, with tree pollen staying minimal and weed pollen inching up slightly by the end of the stretch. This lull fits the season: the trees common to the area, including oak, ginkgo, and witch hazel, released their pollen earlier in the year and are largely finished for now, while weeds such as ragweed typically build toward their peak later in the season. For the moment, air quality on the pollen front remains calm and manageable.

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.

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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.

88 pollen-relevant trees nearby drive today's tree-pollen reading.

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

Honeylocust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring
Norway maple

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring
Littleleaf linden

Littleleaf linden

Tilia cordata

Allergenicity 2/4Blooms summer
Red maple

Red maple

Acer rubrum

Allergenicity 3/4Blooms spring
Pin oak

Pin oak

Quercus palustris

Allergenicity 4/4Blooms spring
Green ash

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring
Callery pear

Callery pear

Pyrus calleryana

Allergenicity 1/4Blooms spring
Hedge maple

Hedge maple

Acer campestre

Allergenicity 3/4Blooms spring
Japanese Flowering cherry

Japanese Flowering cherry

Prunus serrulata

Allergenicity 1/4Blooms spring
Japanese zelkova

Japanese zelkova

Zelkova serrata

Allergenicity 2/4Blooms spring
London planetree

London planetree

Platanus x acerifolia

Allergenicity 4/4Blooms spring
American elm

American elm

Ulmus americana

Allergenicity 3/4Blooms spring
Ginkgo

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring
Swamp White oak

Swamp White oak

Quercus bicolor

Allergenicity 4/4Blooms spring
Northern Red oak

Northern Red oak

Quercus rubra

Allergenicity 4/4Blooms spring
Kentucky coffeetree

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 tree pollen. Over the next five days it ranges from 1 to 2 of 5.
Is tree pollen high in Cambridge, MA right now?
Tree pollen is very low today at 1 of 5, and it's in season now. Most people won't notice it.
What plants are causing allergies in Cambridge, MA?
The main sources right now are Ginkgo, Oak, Hamamelis, Liquidambar, and Larix. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.