
Willow oak
Quercus phellos
Moderate today, mostly weed pollen.
Last updated September 30, 2026
Weed pollen is the main concern in Durham today, sitting at a moderate level that sensitive individuals will likely notice. Grass is contributing only lightly to the mix, and tree pollen is barely registering at this point in the year, so overall the day leans toward mild to moderate irritation for those who react most strongly to ragweed and similar late-season weeds. Looking ahead, weed pollen is expected to climb over the next couple of days before easing back toward the end of the stretch, so those with weed sensitivities may want to be a bit more mindful midweek. Grass should stay fairly steady at a low level, and tree pollen is likely to remain minimal, which fits the season — local trees like elm, maple, and Lagerstroemia are well past their spring peak. This time of year in the Piedmont is really ragweed's stretch, so its ups and downs will continue to drive most of the day-to-day change through early fall.
Every dot is a tree near Durham, 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 Durham. Each bar is that genus's share of the tree pollen.
486 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Durham: what each looks like, how allergenic it is, and when it blooms.

Willow oak
Quercus phellos

Trident maple
Acer buergerianum

Red maple
Acer rubrum

Chinese elm
Ulmus parvifolia

Loblolly pine
Pinus taeda

American elm
Ulmus americana

Callery pear
Pyrus calleryana

Swamp white oak
Quercus bicolor

Japanese zelkova
Zelkova serrata

Overcup oak
Quercus lyrata

Shantung maple
Acer truncatum

Cherry
Prunus

Scarlet oak
Quercus coccinea

Ginkgo
Ginkgo biloba

Sweetgum
Liquidambar styraciflua

Eastern red cedar
Juniperus virginiana