WI pollen report
Madison Pollen Report
Madison's isthmus setting between lakes Mendota and Monona is beautiful — and allergenic. The city's dense canopy of oak and maple buries spring, the surrounding farm and prairie country sends a heavy grass season each summer, and ragweed fills roadsides and restored prairies in the fall. Lake humidity keeps mold active through the warm months.
Collection coming soon to Madison
PollyMap is actively recruiting a verified local partner in Madison. 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 Madison
No allergy clinic is reporting from Madison 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 Madison
Trees: oak and maple (April – June)
Oak (Quercus) and maple dominate the canopy, with birch and ash contributing. May is the peak.
Grasses: bluegrass and Timothy (May – August)
Lawn and pasture grasses across Dane County pollinate heavily in June.
Weeds: ragweed (August – frost)
Ragweed (Ambrosia) thrives in southern Wisconsin's farmland and disturbed soils, with counts elevated until the first frost.
Mold: lake-fed summers
Humidity off the lakes keeps Alternaria and Cladosporium active through summer, with spikes as leaves fall in autumn.
Pollen patterns in Madison
In Madison, 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
Madison 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 Madison
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Madison today?
PollyMap publishes real, microscope-verified pollen counts for Madison — 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 Madison right now?
Madison's worst stretches are May (oak, maple), June (grasses), and September (ragweed). The measured reports on this page show today's actual levels.
When is allergy season in Madison?
April through the first hard frost: trees in late spring, grasses in summer, ragweed in the fall, and mold through the humid months.
Why do allergies spike in Madison in September?
Ragweed peaks in late summer across southern Wisconsin, overlapping with harvest dust and mold from falling leaves — a rough combination before the first frost.
Are you an allergy clinic in Madison? 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 Madison, 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 Madison metro — like a franchise territory. Madison has room for multiple partners, but once your area is assigned, it's locked to your clinic.
No clinic has claimed a territory in Madison 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.
Madison, Middleton, Sun Prairie, and Fitchburg each make natural PollyMap territories. The first allergy clinic in each area becomes its credited pollen expert.
- Your clinic credited on every Madison 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 Madison
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