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Air Quality
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Gathering pollen, air quality, and weather data for you.
Gathering pollen, air quality, and weather data for you.
Pollen Level
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Air Quality
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Janesville's allergy season is compressed but intense, running from April through October. The flat, agricultural landscape around Janesville, WI produces significant grass and ragweed pollen during peak months.
Right now: October frosts begin ending ragweed in Janesville. Exact timing varies — check PollenTracker for daily updates.
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 Janesville 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.
Pollen Level
None
Google UPI 0/5 · Tree
Google UPI 0/5
Google UPI 0/5
Google UPI 0/5
Weather
62°F
Sunny · 87% humidity · 8 mph wind
YES
Pollen is low, but air quality is moderate (AQI 51). Most people will be fine outdoors.
Pollen: Tree pollen risk is low today; source reading: Google UPI 0/5 (None).
Best hours: 13:00-15:00
Hourly pollen risk is estimated from weather trends when no live hourly pollen feed is available.
Informational only. Not medical advice. For health concerns, please consult a qualified healthcare provider. Editorial standards.