MI · Allergy Season Guide
Ann Arbor Allergy Season Guide
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.
PollyMap is actively looking for a qualified local partner in Ann Arbor.
We're recruiting a qualified local allergy clinic — or any clinic that provides allergy care — to become the official pollen collection partner for Ann Arbor.
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Test the air at your own home in Ann Arbor
No allergy clinic is reporting from Ann Arbor 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 Ann Arbor. 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 Ann Arbor
Ann Arbor shares Michigan's a humid continental climate with hot, humid summers and cold, snowy winters. at 840 ft elevation.
Ann Arbor at 840 ft elevation sits within Michigan's broader regional climate.
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.
Ann Arbor's local mold profile includes Alternaria, Cladosporium, Aspergillus. 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.
Ann Arbor monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Ann Arbor.
| 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 | High | High | V.High | V.High | V.High | High | Mod | Low |
Most common local pollens — weeds
Most common airborne molds
Frequently asked questions about allergies in Ann Arbor
Related guides
State Guide
Michigan Allergy Season Guide
Nearby city
Detroit Allergy Season Guide
Nearby city
Grand Rapids Allergy Season Guide
Nearby city
Warren Allergy Season Guide
Nearby city
Sterling Heights Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
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