Low Pollen in Westminster, CO

Low today, mostly tree pollen.

Last updated July 20, 2026

Today's index2out of 5Low
TreeLow

Driving it today

AshFraxinusMapleAcerOakQuercusThujaThujaCottonwoodPopulus

Forecast

Tue
N/A
Wed
N/A
Thu
N/A
Fri
N/A

About pollen in Westminster

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.

What to do today

  • Pollen is low today and most people won't have symptoms.
  • If you're sensitive, rinse off and change clothes after being outdoors.

Tree map

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.

Loading map…

Top tree-pollen sources

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.

  • AshFraxinus32%
  • MapleAcer26%
  • OakQuercus16%
  • Thuja7%
  • PoplarPopulus7%
  • HackberryCeltis4%

Meet the trees near you

Get to know the tree types growing around Westminster: what each looks like, how allergenic it is, and when it blooms.

Silver maple

Silver maple

Acer saccharinum

Allergenicity 3/4Blooms spring
Honey locust

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring
Green ash

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring
Siberian elm

Siberian elm

Ulmus pumila

Allergenicity 3/4Blooms spring
White ash

White ash

Fraxinus americana

Allergenicity 4/4Blooms spring
Littleleaf linden

Littleleaf linden

Tilia cordata

Allergenicity 2/4Blooms summer
Norway maple

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring
Flowering pear

Flowering pear

Pyrus calleryana

Allergenicity 1/4Blooms spring
Northern hackberry

Northern hackberry

Celtis occidentalis

Allergenicity 3/4Blooms spring
Ponderosa pine

Ponderosa pine

Pinus ponderosa

Allergenicity 1/4Blooms spring
Bur oak

Bur oak

Quercus macrocarpa

Allergenicity 4/4Blooms spring
American elm

American elm

Ulmus americana

Allergenicity 3/4Blooms spring
Northern red oak

Northern red oak

Quercus rubra

Allergenicity 4/4Blooms spring
Freeman maple

Freeman maple

Acer freemanii

Allergenicity 3/4Blooms spring
Austrian pine

Austrian pine

Pinus nigra

Allergenicity 1/4Blooms spring
Swamp white oak

Swamp white oak

Quercus bicolor

Allergenicity 4/4Blooms spring

Common questions

What is the pollen count in Westminster, CO today?
Westminster, CO is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. The five-day outlook holds steady around 2 of 5.
Is tree pollen high in Westminster, CO right now?
Tree pollen is low today at 2 of 5. Most people won't have symptoms.
What plants are causing allergies in Westminster, CO?
The main sources right now are Ash, Maple, Oak, Thuja, and Cottonwood.