
Red maple
Acer rubrum
Low today, mostly weed pollen.
Last updated September 29, 2026
Weed pollen is the only real presence in Warren today, and it's sitting at a low level. Tree pollen is quiet for the season, so anyone sensitive to weeds may notice a mild effect, but overall this is an easy day for most allergy sufferers. Looking ahead, weed pollen is expected to hold steady at this low level through the next several days, so conditions should stay manageable. This fits the time of year, as ragweed and other late-season weeds typically linger into early fall before tapering off, while familiar trees like oak, maple, linden, and crabapple have already wound down their pollen production for the year and won't become active again until spring.
Every dot is a tree near Warren, 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 Warren. Each bar is that genus's share of the tree pollen.
142 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Warren: what each looks like, how allergenic it is, and when it blooms.

Red maple
Acer rubrum

Common hackberry
Celtis occidentalis

Willow
Salix

Swamp white oak
Quercus bicolor

Elm
Ulmus

London planetree
Platanus acerifolia

Cottonwood
Populus

Kentucky coffeetree
Gymnocladus dioicus

River birch
Betula nigra

Bloodgood london planetree
Platanus acerifolia

Tulip tree
Liriodendron tulipifera

Bur oak
Quercus macrocarpa

Shingle oak
Quercus imbricaria

Japanese zelkova
Zelkova serrata

Northern red oak
Quercus rubra

Littleleaf linden
Tilia cordata