Very Low Pollen in Boulder, CO
Very low today, mostly tree pollen.
Last updated July 28, 2026
Today's indexVery Low
TreeVery Lowoff-season
What to do today
- Pollen levels are very low right now. It's a great day to enjoy the outdoors!
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About pollen in Boulder
Tree pollen is the only type registering in Boulder today, and it remains at a very low level. Most residents, including those who typically react to pollen, should notice little to no irritation. It is a quiet day for allergy sufferers overall. Looking ahead, tree pollen is expected to stay very low through the next several days, so no significant changes are anticipated in the near term. This tracks with the seasonal pattern, as the region's cottonwoods, pines, and other trees have largely finished their spring release, with late summer typically bringing more attention to grasses and eventually ragweed rather than tree pollen.
Common questions
- What is the pollen count in Boulder, CO today?
- Boulder, CO is at a very low 1 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. Over the next five days it ranges from 1 to 2 of 5.
- Is tree pollen high in Boulder, CO right now?
- Tree pollen is very low today at 1 of 5, and it's past its peak season. Most people won't notice it.