Low
Pollen is low — most people won't notice
Grass pollen is the main trigger · Updated 23 hours ago
Today in Madison: grass pollen is very low, tree pollen is none, weed pollen is none. Overall score: 6/100. Allergies are unlikely for most people right now. Updated at 1:01 AM.
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Pollen levels in Madison are currently low. Most people should not experience allergy symptoms from pollen.
Tree pollen: None. Grass pollen: Very Low. Weed pollen: None.
Tomorrow's pollen forecast for Madison is not yet available.
Grass pollen is the highest supported pollen type in Madison today. Grass pollen is very low.
Tree pollen in Madison is none today.
Grass pollen in Madison is very low today.
Weed pollen in Madison is none today.
Tomorrow's pollen forecast for Madison is not yet available.
Madison, Wisconsin experiences a pronounced allergy season shaped by its humid continental climate, abundant surrounding woodlands, prairies, and proximity to lakes, all of which contribute to high pollen and mold loads from spring through fall.
Tree pollen typically launches the season in late March and peaks through April and May, driven by oak, maple, birch, elm, ash, cottonwood, and box elder—species that dominate Dane County's urban canopy and river corridors.
As tree pollen tapers, grass pollen rises from mid-May through July, with Kentucky bluegrass, timothy, orchard grass, and ryegrass being the primary culprits across Madison's lawns, parks, and rural fringes. The overlap between late-season trees and early grasses in May and June often intensifies symptoms for multi-sensitive sufferers.
Weed pollen takes over in August and persists through the first hard frost in October, with ragweed being the dominant trigger, alongside lamb's quarters, pigweed, and sagebrush.
Beyond pollen, Madison's humidity, frequent summer storms, and heavy leaf litter fuel persistent outdoor mold spores (notably Alternaria and Cladosporium), while cold, sealed winters elevate indoor dust mite exposure.
Overall, Madison's allergy profile is defined by a long, layered season with strong tree, ragweed, and mold components.