Pollen in Portland, OR

About pollen in Portland

Pollen activity in Portland is quiet today, with tree pollen essentially absent and nothing of note in the air. Anyone sensitive to seasonal allergies should find little to react to, making it a comfortable day to spend time outdoors without much concern. Looking ahead, conditions are expected to remain calm over the next few days, consistent with what is typical for mid-November. Local trees such as pyrus, ash, maple, linden, and elm are dormant this time of year, with their pollen production not expected to pick up again until closer to spring. For now, allergy sufferers can expect a steady break from tree-related symptoms.

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 Pyrus, Ash, Maple, Linden, and Elm.