CO · Allergy Season Guide

Boulder Allergy Season Guide

Boulder, CO allergy season guide with local pollen calendar, mold patterns, and PollyMap collection status.

Seeking Official PollyMap Partner

PollyMap is actively looking for a qualified local partner in Boulder.

We're recruiting a qualified local allergy clinic — or any clinic that provides allergy care — to become the official pollen collection partner for Boulder.

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Official PollyMap Partner in Boulder

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Summary

PollyMap does not yet have weekly collected pollen data for Boulder. This guide is based on regional climate patterns and historical allergen data while we recruit a local collection partner. Tree pollen peaks in spring, grass pollen in late spring and early summer, and weed pollen in late summer and fall.

Local allergy guide for Boulder

Local weather — temperature, rainfall, wind, and humidity — drives day-to-day pollen levels. Dry, windy days following warm weather typically produce the highest counts, while heavy rain temporarily clears the air.

Boulder monthly allergy calendar

Typical month-by-month intensity for the four major airborne allergen categories in Boulder.

Frequently asked questions about allergies in Boulder

Related guides

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