Green Bay, Wisconsin Pollen Count
Green Bay pollen count and allergy forecast — tree, grass, and ragweed seasons and what’s pollinating now
Green Bay, WI · Pollen count right now
Grass pollen is Low in Green Bay today
Tree: Very Low 1/5Grass: Low 2/5Tomorrow: Low
Today’s pollen by type
- TreeVery Low1/5
- GrassLow2/5
- Weed / RagweedOut of season
Green Bay pollen calendar
Typical peak months for each pollen type in this climate region. The highlighted column is the current month.
How Green Bay’s pollen count works
The calendar above is tuned to Green Bay’s cold-temperate Northeast climate, not a national average: tree pollen peaks Mar–May, grass May–Jul, and ragweed Aug–Oct here. Those windows are why grass pollen is the one in season in Green Bay right now.
Right now grass pollen leads in Green Bay at a Low (2/5) level. The species actually in the air today: Pine, Oak, and Grasses. Counts run highest on warm, dry, windy mornings and drop after rain, which washes pollen out of the air — reported on the None / Low / Moderate / High / Very High scale.
Frequently asked
- When is pollen worst in Green Bay?
- Green Bay runs the classic three-wave calendar: tree pollen Mar–May, grass May–Jul, then ragweed Aug–Oct. The two worst stretches are the spring tree peak and the late-summer ragweed peak. Currently, grass pollen is what's driving counts this month.
- What's in the air in Green Bay right now?
- Right now grass pollen leads in Green Bay at a Low (2/5) level. The species actually in the air today: Pine, Oak, and Grasses. On a quiet live day, Green Bay's seasonal calendar fills in what's typically airborne this time of year.
- Is tree or grass pollen higher in Green Bay in spring?
- In spring, tree pollen leads in Green Bay — trees pollinate Mar–May, ahead of grass (May–Jul). The handoff is the tail of the tree window: tree counts taper as grass climbs, so an early-spring flare is more likely tree pollen and a late-spring one more likely grass.
- What makes Green Bay's pollen season distinctive?
- Green Bay sits in the cold-temperate Northeast zone, which means a sharply defined calendar — a hard winter lull, then a compact spring tree burst before grass and a long ragweed fall. That shapes when symptoms hit and which allergen to watch.
- How do I reduce pollen exposure in Green Bay?
- Through Green Bay's peak windows (tree Mar–May, grass May–Jul, ragweed Aug–Oct), keep windows shut and run AC on recirculate; counts run highest on dry, warm, windy mornings, so push outdoor activity to late afternoon or just after rain, which clears pollen from the air. A HEPA purifier indoors, a saline rinse after being outside, showering before bed, and starting antihistamines a week or two before your worst local window all measurably cut symptoms.
- What pollen index counts as high?
- Pollen is reported on a categorical scale — None, Low, Moderate, High, and Very High. "High" and above means most allergy sufferers notice symptoms even with brief outdoor exposure, and sensitized people should limit time outside and pre-medicate. "Low" to "Moderate" usually only affects highly sensitive individuals.
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