Moderate Pollen in Boulder, CO

Moderate today, mostly grass pollen.

Last updated July 1, 2026

Today's index3out of 5Moderate
TreeLowoff-season
GrassModerateoff-season

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.

Forecast

Thu
3
Fri
3
Sat
3
Sun
3

About pollen in Boulder

Grass pollen is the main driver in Boulder today, sitting at the High end of the scale and pushing the overall index to High as well. Tree pollen remains Low and is expected to hold steady at that level through the five-day window. Grass should ease slightly in the coming days, dropping from High to a moderate level and staying there. This pattern fits the season, as grass pollen typically peaks in late spring and early summer while tree pollen has largely faded from its spring high. Weed pollen data isn't available right now, though ragweed generally becomes more of a factor later in summer and into fall.

Common questions

What is the pollen count in Boulder, CO today?
Boulder, CO is at a moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 3 of 5.
Is grass pollen high in Boulder, CO right now?
Grass pollen is moderate today at 3 of 5, and it's past its peak season. Sensitive people may notice symptoms.