
Pin oak
Quercus palustris
Moderate today, mostly grass pollen.
Last updated July 1, 2026
Grass pollen is the main driver in Harlem today, sitting at a moderate level (3) and outpacing tree pollen, which has eased to low (2). Overall conditions register as moderate. The forecast points to grass holding steady at moderate for the next couple of days before dipping to low, then ticking back up to moderate by the end of the window. This pattern fits the season, as grass pollen typically peaks in late spring and early summer, while the spring tree surge from oak, honeylocust, plane, maple, and zelkova has largely wound down. Weed pollen has no data available today, though that category generally stays quiet until ragweed arrives later in the summer.
Every dot is a tree near Harlem, 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 Harlem. Each bar is that genus's share of the tree pollen.
1,284 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Harlem: what each looks like, how allergenic it is, and when it blooms.

Pin oak
Quercus palustris

Honeylocust
Gleditsia triacanthos

London planetree
Platanus acerifolia

Callery pear
Pyrus calleryana

Japanese zelkova
Zelkova serrata

Sophora
Styphnolobium japonicum

Maple
Acer

White oak
Quercus alba

Littleleaf linden
Tilia cordata

Austrian pine
Pinus nigra

Black oak
Quercus velutina

Ginkgo
Ginkgo biloba

Northern red oak
Quercus rubra

Green ash
Fraxinus pennsylvanica

Cherry
Prunus

Swamp white oak
Quercus bicolor