Pollen in Boulder, CO
No notable pollen right now.
Last updated September 29, 2026
Forecast
About pollen in Boulder
Pollen conditions in Boulder are quiet at the moment, with nothing significant stirring in the air today. This is a fairly typical lull for late September, when the peak seasons for both trees and grasses have already passed and ragweed, the main late-summer and fall culprit, is beginning to wind down as well. Sensitive individuals should still find this a comfortable stretch. Looking ahead, expect conditions to remain calm through the next few days as the region transitions toward autumn. Ragweed may linger in small amounts until the first hard frost arrives, but tree pollen from species like cottonwood, elm, and juniper won't return in force until spring, and grasses are largely dormant now too. For most allergy sufferers, this time of year offers some of the easiest breathing room until the cycle starts again next season.
Common questions
- What is the pollen count in Boulder, CO today?
- Boulder, CO has no notable tree, grass, or weed pollen today.