High Pollen in Mission, TX

High today, mostly weed pollen.

Last updated September 30, 2026

Today's index4out of 5High
TreeVery Lowin season
GrassLowin season
WeedHighin season

Driving it today

ElmGrassesRagweed

Forecast

Thu
4
Fri
2
Sat
4
Sun
1

About pollen in Mission

Weed pollen is the main concern in Mission today, with levels running high enough to cause noticeable symptoms for those who are sensitive. Tree pollen remains very low, and grass is only mild, so most of today's discomfort will likely trace back to weeds rather than anything blooming overhead. Looking ahead, weed pollen is expected to stay high over the next couple of days before easing toward midweek, though it may climb again briefly before tapering off. Grass will hold steady at low levels through the period, and tree pollen should remain minimal throughout. This pattern fits the season well — early fall in South Texas is typically dominated by ragweed and other late-season weeds, while trees like mesquite and live oak stay dormant until closer to spring.

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 Mission, TX today?
Mission, 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 1 to 4 of 5.
Is weed pollen high in Mission, 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 Mission, 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.