MN · Allergy Season Guide
Bloomington Allergy Season Guide
PollyMap is actively seeking a qualified local collection partner in Bloomington. This guide uses regional climate and historical allergen data while we recruit a local host.
PollyMap is actively looking for a qualified local partner in Bloomington.
We're recruiting a qualified local allergy clinic — or any clinic that provides allergy care — to become the official pollen collection partner for Bloomington.
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Test the air at your own home in Bloomington
No allergy clinic is reporting from Bloomington yet. Until one does, you can order your own PollyKit — a simple air sampler you hang outdoors or indoors. Send it back and the PollyKit Lab shows you exactly what's floating in your air.
- Pollen from local trees, grasses and weeds
- Airborne mold spores
- Dust mites and other indoor allergens
Hang it outdoors
See which pollen and mold are in your yard this season.
Or hang it indoors
Check bedrooms and living spaces for mold, dust mites and more.
Summary
PollyMap does not yet have weekly collected pollen data for Bloomington. This guide is based on regional climate patterns and historical allergen data while we recruit a local collection partner. Tree pollen peaks in spring, grass pollen in late spring and early summer, and weed pollen in late summer and fall.
Local allergy guide for Bloomington
Bloomington shares Minnesota's a humid continental climate with hot, humid summers and cold, snowy winters. at 830 ft elevation.
Bloomington at 830 ft elevation sits within Minnesota's broader regional climate.
In Bloomington, tree pollen — including Maple, Oak, Birch — typically dominates from late winter through spring. Bluegrass grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Bloomington's local mold profile includes Alternaria, Cladosporium, Aspergillus. Spore counts tend to peak after rainfall and during the warm, humid portion of the year.
Local weather — temperature, rainfall, wind, and humidity — drives day-to-day pollen levels. Dry, windy days following warm weather typically produce the highest counts, while heavy rain temporarily clears the air.
Bloomington monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Bloomington.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree | Low | Mod | High | V.High | V.High | High | Mod | Low | Low | Low | Low | Low |
| Grass | — | — | Low | Mod | High | V.High | High | Mod | Low | Low | — | — |
| Weed | Low | Low | Low | Mod | Mod | Mod | High | V.High | V.High | High | Mod | Low |
| Mold | Low | Low | Mod | Mod | High | High | V.High | V.High | V.High | High | Mod | Low |
Most common local pollens — weeds
Most common airborne molds
Frequently asked questions about allergies in Bloomington
Related guides
State Guide
Minnesota Allergy Season Guide
Nearby city
Minneapolis Allergy Season Guide
Nearby city
Saint Paul Allergy Season Guide
Nearby city
St. Paul Allergy Season Guide
Nearby city
Rochester Allergy Season Guide
Nearby city
Duluth Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
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