
Silver maple
Acer saccharinum
Low today, mostly tree pollen.
Last updated July 20, 2026
Tree pollen is the only category registering in Westminster today, and it remains at a low level. Most residents should get through the day without much irritation, though those who are especially sensitive to trees like ash, maple, oak, or cottonwood may notice a mild effect if they spend extended time outdoors. Looking ahead, tree pollen is expected to hold steady at this same low level through the near-term forecast, with no signs of a sudden increase. This lines up with the seasonal pattern, since the heaviest tree pollen typically shows up in spring rather than midsummer. With grass season winding down and ragweed still a couple of months off, this stretch of summer tends to bring a relative lull in pollen activity for the area.
Every dot is a tree near Westminster, 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 Westminster. Each bar is that genus's share of the tree pollen.
635 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Westminster: what each looks like, how allergenic it is, and when it blooms.

Silver maple
Acer saccharinum

Honey locust
Gleditsia triacanthos

Green ash
Fraxinus pennsylvanica

Siberian elm
Ulmus pumila

White ash
Fraxinus americana

Littleleaf linden
Tilia cordata

Norway maple
Acer platanoides

Flowering pear
Pyrus calleryana

Northern hackberry
Celtis occidentalis

Ponderosa pine
Pinus ponderosa

Bur oak
Quercus macrocarpa

American elm
Ulmus americana

Northern red oak
Quercus rubra

Freeman maple
Acer freemanii

Austrian pine
Pinus nigra

Swamp white oak
Quercus bicolor