High Pollen in San Antonio, TX
High today, mostly weed pollen.
Last updated October 15, 2026
Driving it today
Forecast
About pollen in San Antonio
Weed pollen is driving conditions in San Antonio today, with levels high enough to cause real discomfort for those who are sensitive. Grass pollen adds to the mix at a moderate level, noticeable but less intense, while tree pollen is running low and should be only a minor factor right now. Looking ahead, weed pollen is expected to remain high over the next several days, even ticking up briefly, so sensitive individuals should expect symptoms to persist through the week. Grass will hold steady at a moderate level, and tree pollen should stay low throughout. This pattern fits the season well: mid-October in Texas is prime time for ragweed and other fall weeds, while oak, cedar, and other local trees remain mostly dormant until their usual late-winter and spring release.
What to do today
- Avoid mowing the lawn and raking leaves.
- When driving the car, close your windows and turn the air conditioning system to recirculation mode.
- Keep your windows closed and turn on your air purifier or air conditioning.
- Consider staying indoors during the peak pollen hours (morning and early afternoon).
Common questions
- What is the pollen count in San Antonio, TX today?
- San Antonio, TX is at a high 4 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 4 to 5 of 5.
- Is weed pollen high in San Antonio, TX right now?
- Weed pollen is high today at 4 of 5, and it's in season now. Many allergy sufferers will have symptoms.
- What plants are causing allergies in San Antonio, TX?
- The main sources right now are Elm, Grasses, and Ragweed. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.