Low Pollen in Portland, OR

About pollen in Portland

Tree pollen is the main driver in Portland today, sitting at a moderate level and pushing the overall index to moderate as well. Local hardwoods like maple, plane, ash, nyssa, and zelkova are the typical contributors behind these tree counts. Grass pollen remains low for now, and the five-day outlook holds it steady at that low level throughout. With the calendar turning to summer, the spring tree-pollen peak is generally winding down while grass tends to take over as the seasonal driver in late spring and early summer. Weed pollen isn't being reported at this time, so no trend is available there.

What to do today

• It's a good day for outdoor activities since pollen levels are low.
• Do you know which plants cause your pollen allergy? Check out the pollen data to be prepared.

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 low 2 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 2 of 5.

Is grass pollen high in Portland, OR right now?

Grass pollen is low today at 2 of 5, and it's past its peak season. Most people won't have symptoms.

What plants are causing allergies in Portland, OR?

The main sources right now are Linden, Plane, Oak, Pyrus, and Ash.