MI pollen report
Ann Arbor Pollen Report
PollyMap is actively seeking a qualified local collection partner in Ann Arbor. This guide uses regional climate and historical allergen data while we recruit a local host.
Collection coming soon to Ann Arbor
PollyMap is actively recruiting a verified local partner in Ann Arbor. Be the first to know — or apply to be the partner.
Pollen patterns in Ann Arbor
In Ann Arbor, tree pollen — including Maple, Oak, Birch — typically dominates from late winter through spring. Bluegrass grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Top trees
- Maple
- Oak
- Birch
- Ash
- Walnut
Top grasses
- Bluegrass
- Timothy
- Orchard
- Rye
Top weeds
- Ragweed
- Lamb's quarters
- Pigweed
- Plantain
Top molds
- Alternaria
- Cladosporium
- Aspergillus
- Penicillium
Ann Arbor 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 Ann Arbor
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
When is allergy season in Ann Arbor?
In Ann Arbor, 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 Ann Arbor?
The most prevalent local pollens in Ann Arbor include Maple, Oak, Birch in the spring season.
What months are worst for allergies in Ann Arbor?
Most Ann Arbor allergy sufferers report the worst symptoms during peak tree pollen in March-May and again during ragweed season in September.
Does Ann Arbor have mold allergies?
Yes. Ann Arbor's climate supports Alternaria and Cladosporium spore exposure, with counts typically peaking in the warm and humid months.
Why are allergies bad in Ann Arbor?
Local geography, climate, and seasonal plant cycles all influence allergen load in Ann Arbor. The combination of regional vegetation and weather creates predictable spring and fall pollen peaks.
Is there a local pollen collection site in Ann Arbor?
Not yet. PollyMap is actively seeking a qualified local allergy clinic or environmental health partner in Ann Arbor to host weekly pollen collection.
How can my clinic become a PollyMap partner in Ann Arbor?
Clinics in Ann Arbor 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 Ann Arbor.
Become the lead PollyMap collection partner in Ann Arbor and join our national network.
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