MT pollen report
Helena Pollen Report
PollyMap is actively seeking a qualified local collection partner in Helena. This guide uses regional climate and historical allergen data while we recruit a local host.
Collection coming soon to Helena
PollyMap is actively recruiting a verified local partner in Helena. Be the first to know — or apply to be the partner.
Pollen patterns in Helena
In Helena, tree pollen — including Juniper, Cedar, Cottonwood — typically dominates from late winter through spring. Brome grass is the most common warm-season pollinator, and Sagebrush drives the largest fall pollen load.
Top trees
- Juniper
- Cedar
- Cottonwood
- Pine
- Aspen
Top grasses
- Brome
- Bluegrass
- Fescue
Top weeds
- Sagebrush
- Ragweed
- Russian thistle
Top molds
- Cladosporium
- Alternaria
Helena pollen calendar
Typical monthly intensity across the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tree | ||||||||||||
| grass | ||||||||||||
| weed | ||||||||||||
| mold |
Historical reports
Cities near Helena
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
When is allergy season in Helena?
In Helena, allergy season starts with tree pollen in late winter and early spring, transitions to grass pollen in May and June, and ends with weed pollen — primarily ragweed and sagebrush — from August through October.
What pollen is highest in Helena?
The most prevalent local pollens in Helena include Juniper, Cedar, Cottonwood in the spring season.
What months are worst for allergies in Helena?
Most Helena allergy sufferers report the worst symptoms during peak tree pollen in March-May and again during ragweed season in September.
Does Helena have mold allergies?
Yes. Helena's climate supports Cladosporium and Alternaria spore exposure, with counts typically peaking in the warm and humid months.
Why are allergies bad in Helena?
Local geography, climate, and seasonal plant cycles all influence allergen load in Helena. The combination of regional vegetation and weather creates predictable spring and fall pollen peaks.
Is there a local pollen collection site in Helena?
Not yet. PollyMap is actively seeking a qualified local allergy clinic or environmental health partner in Helena to host weekly pollen collection.
How can my clinic become a PollyMap partner in Helena?
Clinics in Helena can apply to become the official PollyMap collection partner. Approved partners receive PollyKits weekly, conduct 24-48 hour collections, and mail samples back for microscope analysis.
Bring real pollen data to Helena.
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