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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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Bloomington's allergy season is compressed but intense, running from April through October. The flat, agricultural landscape around Bloomington, IL produces significant grass and ragweed pollen during peak months.
Right now: July grass pollen tapers in Bloomington, 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 Bloomington 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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YES
Conditions are manageable, but Grass pollen is moderate and air quality is fair. Most people can head out with light precautions.
Pollen: Grass pollen is medium today at 50 grains/m³.
Best hours: 15:00, 20:00-21:00
Weather
90°F
Partly Cloudy · 51% humidity · 3 mph wind
~5 grains/m³
~5 grains/m³