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Pollen Level
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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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Ann Arbor's allergy season is compressed but intense, running from April through October. The flat, agricultural landscape around Ann Arbor, MI produces significant grass and ragweed pollen during peak months.
Right now: March brings the first hints of spring in Ann Arbor. Early-blooming trees may start on unusually warm days.
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 Ann Arbor 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.
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Air Quality
AQI 32
Good
Weather
24°F
Sunny · 59% humidity · 5 mph wind
Pollen Level
High
120 grains/m³ · Tree
~120 grains/m³
~5 grains/m³
~5 grains/m³
Hourly pollen risk is estimated from weather trends when no live hourly pollen feed is available.
CAUTION
Tree pollen is high. If you need to be outside, aim for the safest window later in the day and keep precautions in place.
Lower-risk hours: 14:00, 16:00-17:00