TX · Allergy Season Guide
Houston Allergy Season Guide
PollyMap is actively seeking a qualified local collection partner in Houston. 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 Houston.
We're recruiting a qualified local allergy clinic — or any clinic that provides allergy care — to become the official pollen collection partner for Houston.
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Test the air at your own home in Houston
No allergy clinic is reporting from Houston 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 Houston. 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 Houston
Houston shares Texas's a wide range of climates from humid subtropical in the east to semi-arid in the west, with hot summers and mild winters statewide. at 80 ft elevation.
Houston at 80 ft elevation sits within Texas's broader regional climate.
In Houston, tree pollen — including Mountain cedar, Oak, Pecan — typically dominates from late winter through spring. Bermuda grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Houston's local mold profile includes Cladosporium, Alternaria, 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.
Houston monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Houston.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree | V.High | V.High | High | High | Mod | Low | Low | Low | Low | Mod | High | V.High |
| Grass | Low | Low | Mod | High | V.High | V.High | High | Mod | Mod | Low | Low | Low |
| Weed | Low | Low | Mod | Mod | Mod | Mod | High | V.High | V.High | High | Mod | Low |
| Mold | Mod | Mod | Mod | High | High | High | V.High | V.High | V.High | High | Mod | Mod |
Most common local pollens — trees
Most common local pollens — weeds
Most common airborne molds
Frequently asked questions about allergies in Houston
Related guides
State Guide
Texas Allergy Season Guide
Nearby city
San Antonio Allergy Season Guide
Nearby city
Dallas Allergy Season Guide
Nearby city
Austin Allergy Season Guide
Nearby city
Fort Worth Allergy Season Guide
Nearby city
El Paso Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
Latest PollyMap reports
Partners
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