IA · Allergy Season Guide
Sioux City Allergy Season Guide
PollyMap is actively seeking a qualified local collection partner in Sioux City. 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 Sioux City.
We're recruiting a qualified local allergy clinic, naturopathic clinic, university, environmental health professional, or other qualified organization to become the official pollen collection partner for Sioux City.
Become the Official PollyMap Partner for Sioux CitySummary
PollyMap does not yet have weekly collected pollen data for Sioux City. 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 Sioux City
Sioux City shares Iowa's a humid continental climate with hot, humid summers and cold, snowy winters. at 1,135 ft elevation.
Sioux City at 1,135 ft elevation sits within Iowa's broader regional climate.
In Sioux City, 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.
Sioux City'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.
Sioux City monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Sioux City.
| 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
Current PollyMap data for Sioux City
Official PollyMap Partner in Sioux City
Frequently asked questions about allergies in Sioux City
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Related guides
State Guide
Iowa Allergy Season Guide
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Des Moines Allergy Season Guide
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Cedar Rapids Allergy Season Guide
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Davenport Allergy Season Guide
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Iowa City Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
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