Pollen in Portland, OR

About pollen in Portland

Pollen is essentially quiet across Portland today. Tree pollen is reading as absent, and there is no notable activity to report, so most people should be able to spend time outdoors without much concern related to airborne pollen. Looking ahead, conditions are expected to remain calm over the next few days, with tree pollen staying at negligible levels. This lull fits the season, as the spring flowering period for trees like linden, pyrus, ash, maple, and elm has long since passed. If anything changes, later summer typically brings a shift toward other sources rather than a return of tree pollen, so allergy-prone residents can enjoy this quiet stretch for now.

What to do today

• Pollen is minimal today, so it's a great time to be outside.
• No special pollen precautions are needed right now.

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 has no notable tree, grass, or weed pollen today.

What plants are causing allergies in Portland, OR?

The main sources right now are Linden, Pyrus, Ash, Maple, and Elm.