Pollen in Boulder, CO
No notable pollen right now.
Last updated October 9, 2026
Forecast
About pollen in Boulder
Conditions in Boulder are quiet on the pollen front right now. With autumn well underway, the heavy pollen producers of earlier in the year have largely wound down, and most residents should find today an easy one for breathing comfortably outdoors. Looking ahead, this lull is typical for early October in the Front Range. Tree pollen from species like cottonwood, elm, and juniper won't return in force until spring, and grass pollen has mostly tapered off after its late spring and summer run. Ragweed, the main fall allergy trigger in the region, is in its closing weeks, so sensitive individuals may still notice occasional mild upticks on warm, windy days before cooler weather settles in for good.
Common questions
- What is the pollen count in Boulder, CO today?
- Boulder, CO has no notable tree, grass, or weed pollen today.