MI · Allergy Season Guide
Michigan Allergy Season Guide
Michigan experiences a humid continental climate with hot, humid summers and cold, snowy winters.
Summary
Michigan has 0 active PollyMap collection sites, and is seeking partners in 5 additional cities. Tree pollen typically dominates early spring, grass pollen peaks in late spring and early summer, and weed pollen (including ragweed) extends from late summer through fall.
PollyMap collection status across Michigan
While we find a local clinic
Test the air at your own home in Michigan
No allergy clinic is reporting from Michigan 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.
Statewide allergy overview
Michigan experiences a humid continental climate with hot, humid summers and cold, snowy winters.
Maple, birch, oak, and ash drive the spring tree season. Grass pollen peaks in late May and June, and ragweed dominates from mid-August through the first hard frost.
Heavy leaf litter, agricultural activity, and humid summers produce very high outdoor mold counts from late summer through fall.
Allergy patterns vary by elevation and proximity to coast or mountains within Michigan, but most of the state shares a common seasonal rhythm of spring tree pollen, summer grass pollen, and late-summer to fall weed pollen.
Michigan allergy calendar
Month-by-month intensity for the four major airborne allergen categories.
| 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 |
Top weed pollens
Top airborne molds
Major city guides in Michigan
MI
Detroit
View Detroit allergy season guide →
MI
Grand Rapids
View Grand Rapids allergy season guide →
MI
Warren
View Warren allergy season guide →
MI
Sterling Heights
View Sterling Heights allergy season guide →
MI
Ann Arbor
View Ann Arbor allergy season guide →
Latest PollyMap reports for Michigan
Frequently asked questions
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