WA pollen report
Spokane Pollen Report
Spokane sits where the ponderosa pine forests of the Inland Northwest meet the Palouse's rolling farmland — and it gets pollen from both. Birch and pine drive the spring, the region's grass and grain country adds a heavy summer season, and sagebrush and ragweed carry the fall. It's the Inland Northwest's allergy hub.
Collection coming soon to Spokane
PollyMap is actively recruiting a verified local partner in Spokane. Be the first to know — or apply to be the partner.
While we find a local clinic
Test the air at your own home in Spokane
No allergy clinic is reporting from Spokane 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.
What drives allergies in Spokane
Trees: birch, pine, and alder (March – June)
Birch (Betula), ponderosa pine, and alder drive the spring season across the metro and the surrounding forest belt.
Grasses: Timothy and bluegrass (May – July)
The Inland Northwest grows Timothy hay commercially — and Timothy (Phleum pratense) is one of the most allergenic grasses. June is the peak.
Weeds: sagebrush and ragweed (August – October)
Sagebrush (Artemisia) and ragweed dominate the fall across the region's dry country.
Mold: modest, season-linked
Spokane's drier climate keeps mold lower than the west side of the state, with rises after spring rains and during irrigated months.
Pollen patterns in Spokane
In Spokane, tree pollen — including Alder, Birch, Cedar — typically dominates from late winter through spring. Rye grass is the most common warm-season pollinator, and Plantain drives the largest fall pollen load.
Top trees
- Alder
- Birch
- Cedar
- Hazel
- Maple
Top grasses
- Rye
- Orchard
- Timothy
- Bentgrass
Top weeds
- Plantain
- Dock
- Nettle
Top molds
- Cladosporium
- Alternaria
- Penicillium
- Aspergillus
Spokane 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 Spokane
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Spokane today?
PollyMap publishes real, microscope-verified pollen counts for Spokane — measured from physical air samples. The latest report on this page shows current tree, grass, weed, and mold levels.
Is the pollen count high in Spokane right now?
Spokane's worst stretches are May (birch, pine), June (grasses), and September (sagebrush, ragweed). The measured reports on this page show today's actual levels.
When is allergy season in Spokane?
March through October: trees in spring, grasses in early summer, and sagebrush and ragweed in the fall.
Why is grass pollen heavy in Spokane?
The surrounding Palouse and Spokane Valley grow Timothy hay and turf grasses commercially — when those fields pollinate in June, the whole region feels it.
Are you an allergy clinic in Spokane? Claim your territory on PollyMap.
PollyMap is a local authority-building tool for allergy clinics, ENT practices, and any clinic that offers allergy care. By becoming the Official PollyMap Partner for your part of Spokane, your clinic gets credited on real pollen reports, receives ready-to-share weekly content, and becomes the go-to local expert patients trust.
We assign each partner a designated territory within the Spokane metro — like a franchise territory. Spokane has room for multiple partners, but once your area is assigned, it's locked to your clinic.
No clinic has claimed a territory in Spokane yet. The best areas go to the first clinics that sign up — once one does, that part of town is off the table for everyone else.
Spokane, Spokane Valley, Liberty Lake, and Coeur d'Alene across the border each make PollyMap territories. First clinic in each area becomes its credited pollen expert.
- Your clinic credited on every Spokane pollen report
- Weekly real-sample reports and ready-to-share content under your brand
- Locked territory — competing clinics can't claim your area
- Become the go-to allergy expert in your part of Spokane
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