TX pollen report
Houston Pollen Report
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.
Collection coming soon to Houston
PollyMap is actively recruiting a verified local partner in Houston. Be the first to know — or apply to be the partner.
Pollen patterns in Houston
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.
Top trees
- Mountain cedar
- Oak
- Pecan
- Ash
- Elm
Top grasses
- Bermuda
- Johnson
- Rye
Top weeds
- Ragweed
- Pigweed
- Russian thistle
Top molds
- Cladosporium
- Alternaria
- Aspergillus
Houston pollen calendar
Typical monthly intensity across the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tree | ||||||||||||
| grass | ||||||||||||
| weed | ||||||||||||
| mold |
Historical reports
Cities near Houston
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
When is allergy season in Houston?
In Houston, allergy season starts with tree pollen in late winter and early spring, transitions to grass pollen in May and June, and ends with weed pollen — primarily ragweed and sagebrush — from August through October.
What pollen is highest in Houston?
The most prevalent local pollens in Houston include Mountain cedar, Oak, Pecan in the spring season.
What months are worst for allergies in Houston?
Most Houston allergy sufferers report the worst symptoms during peak tree pollen in March-May and again during ragweed season in September.
Does Houston have mold allergies?
Yes. Houston's climate supports Cladosporium and Alternaria spore exposure, with counts typically peaking in the warm and humid months.
Why are allergies bad in Houston?
Local geography, climate, and seasonal plant cycles all influence allergen load in Houston. The combination of regional vegetation and weather creates predictable spring and fall pollen peaks.
Is there a local pollen collection site in Houston?
Not yet. PollyMap is actively seeking a qualified local allergy clinic or environmental health partner in Houston to host weekly pollen collection.
How can my clinic become a PollyMap partner in Houston?
Clinics in Houston can apply to become the official PollyMap collection partner. Approved partners receive PollyKits weekly, conduct 24-48 hour collections, and mail samples back for microscope analysis.
Bring real pollen data to Houston.
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