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Gathering pollen, air quality, and weather data for you.
Pollen Level
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Air Quality
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Oshkosh's allergy season is compressed but intense, running from April through October. The flat, agricultural landscape around Oshkosh, WI produces significant grass and ragweed pollen during peak months.
Right now: July grass pollen tapers in Oshkosh, but summer thunderstorms can break pollen into fine particles that intensify symptoms — watch for storm fronts.
Spring
Apr – May
Tree pollen season is short but intense — oak, elm, and ash dominate.
Summer
May – Jul
Grass pollen peaks in June. Agricultural regions see elevated counts.
Fall
Aug – Oct
Ragweed is the dominant allergen. The Midwest is a major ragweed zone.
The flat terrain near Oshkosh allows pollen to travel long distances on the wind. Cold fronts can temporarily drop counts, but warm spells bring rapid pollen surges. PollenTracker monitors these daily shifts.
Open another nearby forecast without going back to the map.
CAUTION
Tree pollen is moderate, but 11 mph wind may stir it up. Take your usual precautions if you're sensitive.
Weather: 11 mph wind can spread pollen more aggressively.
Lower-risk hours: 11:00-13:00
Weather
91°F
Sunny · 56% humidity · 11 mph wind
~5 grains/m³