High Pollen in Westminster, CO

About pollen in Westminster

Weed pollen is the main concern in Westminster today, running high enough to cause noticeable symptoms for those who are sensitive. Tree pollen remains low in comparison, so it shouldn't be a major factor right now. Combined, conditions lean toward the more irritating end of the scale, so anyone prone to sneezing, itchy eyes, or congestion should expect a bit of a challenge outdoors. Looking ahead, weed pollen is set to stay high over the next several days and may climb even further before easing slightly. Tree pollen, meanwhile, is expected to fade to virtually nothing, which fits the season — trees like ash, maple, oak, thuja, and cottonwood have their peak well behind them by mid-August. This time of year belongs to weeds, with ragweed and similar plants typically driving allergy symptoms through late summer and into fall.

What to do today

• Avoid mowing the lawn and raking leaves.
• When driving the car, close your windows and turn the air conditioning system to recirculation mode.
• Keep your windows closed and turn on your air purifier or air conditioning.
• Consider staying indoors during the peak pollen hours (morning and early afternoon).

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.

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.

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

Acer saccharinum

Allergenicity 3/4Blooms spring

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring

Siberian elm

Ulmus pumila

Allergenicity 3/4Blooms spring

White ash

Fraxinus americana

Allergenicity 4/4Blooms spring

Littleleaf linden

Tilia cordata

Allergenicity 2/4Blooms summer

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring

Flowering pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Northern hackberry

Celtis occidentalis

Allergenicity 3/4Blooms spring

Ponderosa pine

Pinus ponderosa

Allergenicity 1/4Blooms spring

Bur oak

Quercus macrocarpa

Allergenicity 4/4Blooms spring

American elm

Ulmus americana

Allergenicity 3/4Blooms spring

Northern red oak

Quercus rubra

Allergenicity 4/4Blooms spring

Freeman maple

Acer freemanii

Allergenicity 3/4Blooms spring

Austrian pine

Pinus nigra

Allergenicity 1/4Blooms spring

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 high 4 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 4 to 5 of 5.

Is weed pollen high in Westminster, CO right now?

Weed pollen is high today at 4 of 5, and it's in season now. Many allergy sufferers will have symptoms.

What plants are causing allergies in Westminster, CO?

The main sources right now are Ash, Maple, Oak, Thuja, and Cottonwood. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.