Allergies are Low and easing across the Denver area. That is down from Extreme last week. Well below its late October peak. Well below its recent average. About the same as Colorado's metro areas overall.
Allergy risk levels are based on pollen counts, mold spore measurements, and air quality data from monitoring stations. The index reflects the combined burden of tree, grass, and weed pollen along with indoor/outdoor mold activity.
Data is updated daily during high-pollen seasons and every 2–3 days during winter months.
Sources: AAAAI pollen stations, NAB, EPA AirNow, Hubbub World allergy model
Last updated: November 9, 2026
Data refreshed weekly