Low Pollen in Gresham, OR

About pollen in Gresham

Pollen levels in Gresham are running low today. Tree pollen, from sources like maple, ash, birch, parrotia, and styrax, is present but only mild, while weed pollen is quite scarce. Most people should get through the day without much irritation, though those especially sensitive to tree pollen may notice a slight effect. Looking ahead, tree pollen is expected to fade out almost entirely over the next several days, which fits the seasonal pattern as the main tree pollination period wound down back in spring. Weed pollen, on the other hand, is likely to inch upward slightly as we move deeper into August, a typical shift as late-summer weeds become more active. Overall, conditions should remain manageable, with weeds gradually taking over as the season's primary source of pollen.

What to do today

• Pollen is low today and most people won't have symptoms.
• If you're sensitive, rinse off and change clothes after being outdoors.

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 is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. Over the next five days it ranges from 1 to 2 of 5.

Is tree pollen high in Gresham, OR right now?

Tree pollen is low today at 2 of 5, and it's in season now. Most people won't have symptoms.

What plants are causing allergies in Gresham, OR?

The main sources right now are Maple, Ash, Birch, Parrotia, and Styrax. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.