Moderate Pollen in Aurora, CO

Moderate today, mostly weed pollen.

Last updated August 15, 2026

Today's index3out of 5Moderate
TreeNonein season
WeedModerateoff-season

Driving it today

CeltisCeltisAshFraxinusOakQuercusMapleAcerElmUlmus

Forecast

Sun
3
Mon
4
Tue
4
Wed
3

About pollen in Aurora

Weed pollen is the main story in Aurora today, running at a moderate level that many sensitive individuals will notice. Tree pollen is quiet, so any allergy symptoms right now are almost certainly coming from weeds rather than trees. Expect some mild irritation if you spend extended time outdoors, though it should be manageable for most people. Looking ahead, weed pollen is expected to hold steady over the next couple of days before ticking up to a more noticeable level, then easing slightly by the end of the five-day stretch. This pattern fits the season well, as mid-August marks the period when weeds, particularly ragweed, tend to become more active as summer winds down. Tree pollen from species common to the area, such as Celtis, ash, oak, maple, and elm, remains out of the picture for now, since their release windows are well behind us and won't return until spring.

What to do today

  • It's important to shower and wash your hair after spending a lot of time outdoors.
  • When spending time outside, use sunglasses and a cap to keep pollen out of your face and eyes.
  • Wash clothes worn outdoors to remove any remnants of pollen grains.
  • If possible, wear glasses instead of contact lenses.
  • Did you hang any laundry outside? Now is a good time to hang clothes indoors or use a dryer if possible.

Tree map

Every dot is a tree near Aurora, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.

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Top tree-pollen sources

The local tree genera behind today's pollen near Aurora. Each bar is that genus's share of the tree pollen.

283 pollen-relevant trees nearby drive today's tree-pollen reading.

Meet the trees near you

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

Green ash

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring
Silver maple

Silver maple

Acer saccharinum

Allergenicity 3/4Blooms spring
American linden

American linden

Tilia americana

Allergenicity 2/4Blooms summer
Honeylocust

Honeylocust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring
Honey locust

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring
Shademaster honeylocust

Shademaster honeylocust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring
Linden

Linden

Tilia

Allergenicity 2/4Blooms summer
Norway maple

Norway maple

Acer platanoides

Allergenicity 3/4Blooms spring
Austrian pine

Austrian pine

Pinus nigra

Allergenicity 1/4Blooms spring
Plains cottonwood

Plains cottonwood

Populus sargentii

Allergenicity 3/4Blooms spring
Ponderosa pine

Ponderosa pine

Pinus ponderosa

Allergenicity 1/4Blooms spring
White ash

White ash

Fraxinus americana

Allergenicity 4/4Blooms spring
Hackberry

Hackberry

Celtis occidentalis

Allergenicity 3/4Blooms spring
Pinyon pine

Pinyon pine

Pinus edulis

Allergenicity 1/4Blooms spring
Littleleaf linden

Littleleaf linden

Tilia cordata

Allergenicity 2/4Blooms summer
Rocky mountain juniper

Rocky mountain juniper

Juniperus scopulorum

Allergenicity 5/4Blooms winter,spring

Common questions

What is the pollen count in Aurora, CO today?
Aurora, CO is at a moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 3 to 4 of 5.
Is weed pollen high in Aurora, CO right now?
Weed pollen is moderate today at 3 of 5, and it's past its peak season. Sensitive people may notice symptoms.
What plants are causing allergies in Aurora, CO?
The main sources right now are Celtis, Ash, Oak, Maple, and Elm. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.