Pollen count in Houston today
Pollen in Houston, TX is Very Low (1 of 5) on Thu Nov 5: tree Very Low (1/5), grass Very Low (1/5), ragweed Very Low (1/5).
5-day pollen forecast
| Day | Tree | Grass | Ragweed | Weed |
|---|---|---|---|---|
| Thu Nov 5 | Very Low | Very Low | Very Low | None |
| Fri Nov 6 | Very Low | None | Very Low | None |
| Sat Nov 7 | Very Low | None | Very Low | None |
| Sun Nov 8 | Very Low | None | Very Low | None |
| Mon Nov 9 | Very Low | None | Very Low | None |
Scale: Universal Pollen Index, 0 None · 1 Very Low · 2 Low · 3 Moderate · 4 High · 5 Very High. What the numbers mean.
Plants in the air in Houston this week

Season: Two distinct seasons, late winter to early spring, and late summer to fall (species dependent).

Season: Late spring, summer.
Cross-reactions: Plantain (Plantago) pollen. In addition, there may be a higher risk for food allergies like melons, oranges, tomatoes, peanuts, soy, potato, and other legumes.

Season: Late summer, fall.
Cross-reactions: Mugwort and Goldenrod as well as daisies such as Sunflower, Dandelion, and Chamomile.
What to do today
Because tree is Very Low:
- Pollen levels are very low right now. It's a great day to enjoy the outdoors!
When is allergy season in Houston?
Houston follows the typical pattern for Texas and the South Central US. Dates move a few weeks with each year's weather.
| Pollen | Typical season | Notes |
|---|---|---|
| Tree | December to April | Mountain cedar (Ashe juniper) causes "cedar fever" from December to February, mainly in central Texas. Oak follows from February to April. |
| Grass | April to October | Bermuda and Johnson grass give a long season. |
| Ragweed | August to November | Ragweed and other weeds are strong across the region. |
Quietest time: Short and not every year: late November, before cedar starts.
Get a pollen alert for Houston
Pollenary is a free iPhone app. Type ZIP 77002 (or your own), tick the pollen that bothers you, and it sends one push each morning when that pollen reaches your level, with the plants named. No account and no location tracking.
Questions
What is the pollen count in Houston today?
Pollen in Houston, TX is Very Low (1 of 5) on Thu Nov 5: tree Very Low (1/5), grass Very Low (1/5), ragweed Very Low (1/5).
When is allergy season in Houston?
In Texas and the South Central US the typical seasons are: Tree: December to April; Grass: April to October; Ragweed: August to November. The quiet time is short and not every year: late November, before cedar starts. Exact dates move with the weather each year.
Which pollen is in the air in Houston right now?
Today: Elm (tree), Grasses (grass), Ragweed (ragweed).
How can I get a pollen alert for Houston?
Pollenary sends a free morning push when the pollen you choose (tree, grass, ragweed, weed or mold) reaches your level in Houston. It needs no account; you type ZIP 77002 or any other ZIP.
Nearby cities
Pollen data by Google (Universal Pollen Index, 0–5). Pollen levels are a forecast, not a medical measurement. Pollenary is not a medical device and does not diagnose or treat any condition. Talk to a doctor about your allergies.