Very Low Pollen in Portland, OR

About pollen in Portland

Pollen levels around Portland remain quiet today. Tree pollen is absent entirely, and weeds are the only source showing any activity, sitting at a very low level. For most people, this should mean little to no irritation, and even those with sensitivities are unlikely to notice much of an effect. Looking ahead, tree pollen from species like Pyrus, ash, maple, linden, and elm should stay silent through the next several days, which fits the season, as these trees typically release their pollen in spring rather than late summer. Weed pollen, on the other hand, is expected to inch upward slightly by the end of the forecast window, a gradual shift that lines up with the approach of ragweed season later in the summer and into fall. Overall, conditions look mild for now, with only a modest uptick in weed exposure worth keeping an eye on.

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 Portland, 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 Portland. Each bar is that genus's share of the tree pollen.

Meet the trees near you

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

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring

Red maple

Acer rubrum

Allergenicity 3/4Blooms spring

Pear

Pyrus

Allergenicity 1/4Blooms spring

Cherry

Prunus

Allergenicity 1/4Blooms spring

Ash

Fraxinus

Allergenicity 4/4Blooms spring

Pine

Pinus

Allergenicity 1/4Blooms spring

Plum

Prunus

Allergenicity 1/4Blooms spring

Bigleaf maple

Acer macrophyllum

Allergenicity 3/4Blooms spring

Japanese maple

Acer palmatum

Allergenicity 3/4Blooms spring

Other maple

Acer

Allergenicity 3/4Blooms spring

Birch

Betula

Allergenicity 5/4Blooms spring

Alder

Alnus

Allergenicity 4/4Blooms winter,spring

Deciduous oak

Quercus

Allergenicity 4/4Blooms spring

Linden

Tilia

Allergenicity 2/4Blooms summer

Sweetgum

Liquidambar

Allergenicity 2/4Blooms spring

Willow

Salix

Allergenicity 3/4Blooms spring

Common questions

What is the pollen count in Portland, OR today?

Portland, OR is at a very low 1 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 1 to 2 of 5.

Is weed pollen high in Portland, OR 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 Portland, OR?

The main sources right now are Pyrus, Ash, Maple, Linden, and Elm. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.