
Willow oak
Quercus phellos
Moderate today, mostly weed pollen.
Last updated September 30, 2026
Weed pollen is the main story in Arlington today, sitting at a moderate level that sensitive individuals will likely notice. Tree pollen is absent right now, and grass is barely present, so if you are feeling any allergy symptoms this week, weeds are the most probable cause. Looking ahead, weed pollen is expected to climb over the next couple of days before easing back down toward the end of the stretch. This tracks with the season, as ragweed and other late-summer and fall weeds typically reach their strongest levels around this time before tapering off as autumn progresses. Grass should remain minimal, and tree pollen from species like oak, maple, and Prunus is not expected to stir 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