Low Pollen in Denver, CO

About pollen in Denver

Weeds are the only pollen worth noting in Denver today, and even that is sitting at a low level. Tree pollen is absent entirely, which is typical for this point in the season. Most people should find the air fairly easy to manage, though those with a strong sensitivity to weed pollen, such as ragweed, may notice mild effects. Looking ahead, weed pollen is expected to hold steady at a low level for the next several days before easing slightly toward the end of the stretch. Tree pollen should remain quiet throughout, since local species like Malus, Crataegus, Plane, Prunus, and Koelreuteria have long finished their spring release and won't be active again until next year. This pattern fits the season well, as early fall in Denver tends to be dominated by the last stretch of weed pollen while trees and grasses stay dormant.

What to do today

• It's a good day for outdoor activities since pollen levels are low.
• Do you know which plants cause your pollen allergy? Check out the pollen data to be prepared.

Tree map

Every dot is a tree near Denver, 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 Denver. Each bar is that genus's share of the tree pollen.

Meet the trees near you

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

Plains cottonwood

Populus sargentii

Allergenicity 3/4Blooms spring

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring

Siberian elm

Ulmus pumila

Allergenicity 3/4Blooms spring

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

Austrian pine

Pinus nigra

Allergenicity 1/4Blooms spring

Northern hackberry

Celtis occidentalis

Allergenicity 3/4Blooms spring

Boxelder

Acer negundo

Allergenicity 3/4Blooms spring

Crack willow

Salix fragilis

Allergenicity 3/4Blooms spring

White ash

Fraxinus americana

Allergenicity 4/4Blooms spring

Scotch pine

Pinus sylvestris

Allergenicity 1/4Blooms spring

Quaking aspen

Populus tremuloides

Allergenicity 3/4Blooms spring

Rocky mountain juniper

Juniperus scopulorum

Allergenicity 5/4Blooms winter,spring

Flowering pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Pinyon pine

Pinus edulis

Allergenicity 1/4Blooms spring

Silver maple

Acer saccharinum

Allergenicity 3/4Blooms spring

Peachleaf willow

Salix amygdaloides

Allergenicity 3/4Blooms spring

Common questions

What is the pollen count in Denver, CO today?

Denver, CO is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 1 to 2 of 5.

Is weed pollen high in Denver, CO right now?

Weed pollen is low today at 2 of 5, and it's past its peak season. Most people won't have symptoms.

What plants are causing allergies in Denver, CO?

The main sources right now are Malus, Crataegus, Plane, Prunus, and Koelreuteria.