When is Juniper pollen worst in Denver?

Juniper pollen in Denver usually peaks March to April, when it typically reaches Moderate.

Is Juniper pollen high in Denver right now?

Juniper isn't tracked by the live sensors near Denver, but in July it is typically None based on the season.

Denver, CO Juniper Pollen

Juniper pollen in Denver usually peaks around March to April, reaching Moderate at its worst. Denver's mile-high, dry climate shapes a distinct allergy year: mountain juniper on warm late-winter days, cottonwood in spring, grass through summer, and ragweed in fall.

Juniper from the foothills pollinates on warm, dry days as early as February and March, an early start to Denver's tree season.

Juniper in Denver today

Monday, July 27, 2026

Juniper isn't picked up by the live pollen sensors near Denver, so there's no daily number for it. Based on the season, July is typically None for Juniper.

See Denver's full pollen report and 5-day forecast →

Juniper pollen by month in Denver

How juniper usually runs across the year. The current month is outlined.

Jan

None

Feb

None

Mar

Moderate

Apr

Moderate

May

None

Jun

None

Jul

None

Aug

None

Sep

None

Oct

None

Nov

None

Dec

None

Managing juniper season in Denver

If juniper is your trigger, start a daily antihistamine like cetirizine (Zyrtec) or loratadine (Claritin) a week or two before the March to April peak, rather than waiting for symptoms. Keep windows closed on high-count mornings, shower and change clothes after time outside, and run the AC on recirculate in the car.

When symptoms don't ease with over-the-counter medicine, an allergist in Colorado can test whether juniper is really what you react to and talk through longer-term options like allergy shots.

Sources

American College of Allergy, Asthma & Immunology (ACAAI). "Tree Allergy." https://acaai.org/allergies/allergic-conditions/tree-pollen/

More pollen in Denver

Denver ragweed pollen — peaks September.
Denver grass pollen — peaks June.
Denver sagebrush pollen — peaks August to September.
Denver cottonwood pollen — peaks April to May.

Denver pollen calendar — every allergen, month by month.
Denver pollen count today — live tree, grass, and weed levels with a 5-day forecast.
Colorado pollen season — the statewide calendar and other cities.

Get Denver pollen alerts

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Seasonal pattern based on Colorado pollen data and local sources. Today's reading updated daily. MyPollenPal