Moderate Pollen in Portland, OR

About pollen in Portland

Tree pollen is the main story in Portland today, sitting at a moderate level that could be noticeable if you tend to be sensitive. Grass pollen, by contrast, is quite low and unlikely to cause much trouble. For most people, today should be a manageable day, though those with stronger tree allergies may want to pay a bit more attention to symptoms. Looking ahead, tree pollen is expected to hold steady at this moderate level through the next stretch of days, so no major changes are on the horizon. This is a bit later in the season for tree pollen to still be active, but sources like maple, plane, ash, nyssa, and zelkova can continue contributing into summer. Grass pollen should remain quiet as well, and with the season shifting, it is still a bit early for ragweed and other late-summer weeds to factor in.

What to do today

• Pollen is moderate today; sensitive people should limit long stretches outdoors, especially in the afternoon.
• Shower and change clothes after spending time outside.
• Keep windows closed during the highest-pollen hours.

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 moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. The five-day outlook holds steady around 3 of 5.

Is tree pollen high in Portland, OR right now?

Tree pollen is moderate today at 3 of 5. Sensitive people may notice symptoms.

What plants are causing allergies in Portland, OR?

The main sources right now are Maple, Plane, Ash, Nyssa, and Zelkova.