Pollen in Gresham, OR

About pollen in Gresham

Gresham is having a quiet stretch when it comes to pollen. Tree pollen is sitting at essentially none today, so those sensitive to species like linden, Douglas fir, cherry and plum, oak, or Japanese snowbell should find little to react to. Overall conditions are calm, making this a comfortable day for most allergy sufferers. Looking ahead, tree pollen is expected to stay at this low level over the next several days, offering continued relief. This tracks with the season, since local trees typically release their heaviest pollen in spring and have largely wound down by midsummer. With late July underway, attention for allergy sufferers in the area often shifts toward grasses and, later, weeds like ragweed as summer progresses, so it is worth keeping an eye on those categories as the season moves along.

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

Meet the trees near you

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

Red maple

Acer rubrum

Allergenicity 3/4Blooms spring

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring

Pear

Pyrus

Allergenicity 1/4Blooms spring

Plum

Prunus

Allergenicity 1/4Blooms spring

Cherry

Prunus

Allergenicity 1/4Blooms spring

Deciduous oak

Quercus

Allergenicity 4/4Blooms spring

Ash

Fraxinus

Allergenicity 4/4Blooms spring

Birch

Betula

Allergenicity 5/4Blooms spring

Japanese maple

Acer palmatum

Allergenicity 3/4Blooms spring

Pine

Pinus

Allergenicity 1/4Blooms spring

Sweetgum

Liquidambar

Allergenicity 2/4Blooms spring

Other maple

Acer

Allergenicity 3/4Blooms spring

Zelkova

Zelkova serrata

Allergenicity 2/4Blooms spring

Linden

Tilia

Allergenicity 2/4Blooms summer

Bigleaf maple

Acer macrophyllum

Allergenicity 3/4Blooms spring

Paperbark maple

Acer griseum

Allergenicity 3/4Blooms spring

Common questions

What is the pollen count in Gresham, OR today?

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

What plants are causing allergies in Gresham, OR?

The main sources right now are Linden, Pseudotsuga, Prunus, Oak, and Styrax.