MT · Allergy Season Guide
Missoula Allergy Season Guide
PollyMap is actively seeking a qualified local collection partner in Missoula. This guide uses regional climate and historical allergen data while we recruit a local host.
PollyMap is actively looking for a qualified local partner in Missoula.
We're recruiting a qualified local allergy clinic — or any clinic that provides allergy care — to become the official pollen collection partner for Missoula.
Become the Official PollyMap Partner for MissoulaOfficial PollyMap Partner in Missoula
Become the Official PollyMap Partner for Missoula
Own the weekly real-sample reports, PollyMap Lab analysis, and trusted local profile for Missoula. One clinic per territory.
Apply for MissoulaWhile we find a local clinic
Test the air at your own home in Missoula
No allergy clinic is reporting from Missoula yet. Until one does, you can order your own PollyKit — a simple air sampler you hang outdoors or indoors. Send it back and the PollyKit Lab shows you exactly what's floating in your air.
- Pollen from local trees, grasses and weeds
- Airborne mold spores
- Dust mites and other indoor allergens
Hang it outdoors
See which pollen and mold are in your yard this season.
Or hang it indoors
Check bedrooms and living spaces for mold, dust mites and more.
Summary
PollyMap does not yet have weekly collected pollen data for Missoula. 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 Missoula
Missoula shares Montana's a high-elevation semi-arid to alpine climate with cold winters, warm dry summers, and dramatic day-night temperature swings. at 3,209 ft elevation.
Missoula at 3,209 ft elevation sits within Montana's broader regional climate.
In Missoula, 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.
Missoula's local mold profile includes Cladosporium, Alternaria. Spore counts tend to peak after rainfall and during the warm, humid portion of the year.
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.
Missoula monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Missoula.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree | Low | Mod | High | V.High | V.High | High | Mod | Low | Low | Low | Low | Low |
| Grass | — | — | Low | Mod | High | V.High | High | Mod | Low | Low | — | — |
| Weed | Low | Low | Low | Mod | Mod | Mod | High | V.High | V.High | High | Mod | Low |
| Mold | Low | Low | Mod | Mod | Mod | Mod | High | High | Mod | Mod | Low | Low |
Most common local pollens — trees
Most common local pollens — weeds
Most common airborne molds
Frequently asked questions about allergies in Missoula
Related guides
State Guide
Montana Allergy Season Guide
Nearby city
Billings Allergy Season Guide
Nearby city
Great Falls Allergy Season Guide
Nearby city
Bozeman Allergy Season Guide
Nearby city
Helena Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
Latest PollyMap reports
Partners
Become a partner
Get local pollen alerts for Missoula.
Subscribe and we'll email you when new local reports are published.
Subscribe to alerts