
Willow oak
Quercus phellos
High today, mostly weed pollen.
Last updated October 9, 2026
Weed pollen is the main driver of today's allergy conditions in Arlington, with levels running high. Anyone sensitive to ragweed and similar late-season weeds should expect symptoms to be fairly noticeable, especially outdoors during the afternoon. Tree pollen is absent right now, so those with tree-related allergies can expect a reprieve on that front. Looking ahead, weed pollen should ease over the next couple of days before settling into a milder, more tolerable range by midweek. This pattern fits the season well: early October is typically when ragweed and other fall weeds wind down their peak activity. Tree pollen from species like oak, maple, and the Prunus and Malus family is not a concern at this time of year and won't become active again until closer to spring.
Every dot is a tree near Arlington, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.
The local tree genera behind today's pollen near Arlington. Each bar is that genus's share of the tree pollen.
576 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Arlington: what each looks like, how allergenic it is, and when it blooms.

Willow oak
Quercus phellos

Red maple
Acer rubrum

Cherry
Prunus

American elm
Ulmus americana

Red oak
Quercus rubra

Pin oak
Quercus palustris

Chokecherry
Prunus virginiana

London plane tree
Platanus acerifolia

Japanese zelkova
Zelkova serrata

American sycamore
Platanus occidentalis

Kwanzan cherry
Prunus serrulata

Okame cherry
Prunus L.

Swamp white oak
Quercus bicolor

Sugar maple
Acer saccharum

Hedge maple
Acer campestre

Chinese elm
Ulmus parvifolia