Moderate Pollen in Houston, TX

About pollen in Houston

Tree pollen is the main story in Houston today, sitting at a moderate level that could be noticeable for those with sensitivities. Grass and weed pollen remain very low and are unlikely to cause much trouble. Overall, it's a fairly manageable day for most people, though anyone with a strong tree allergy may still feel some effects when spending time outdoors. Looking ahead, tree pollen should hold at a similar moderate level over the next stretch, while grass and weed levels are expected to stay quiet through the coming days. This pattern is a bit unusual for late summer, when trees like oak, elm, and cypress typically finish their heavier release earlier in the year — so this lingering tree activity is worth keeping in mind if you're sensitive. As we move deeper into late summer, keep an eye out for weed pollen, particularly ragweed, which tends to pick up in the weeks ahead.

What to do today

• Pollen is moderate today; sensitive people should limit long stretches outdoors, especially in the afternoon.
• Shower and change clothes after spending time outside.
• Keep windows closed during the highest-pollen hours.

Tree map

Every dot is a tree near Houston, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.

Top tree-pollen sources

The local tree genera behind today's pollen near Houston. Each bar is that genus's share of the tree pollen.

Meet the trees near you

Get to know the tree types growing around Houston: what each looks like, how allergenic it is, and when it blooms.

Live oak

Quercus virginiana

Allergenicity 4/4Blooms spring

Common hackberry

Celtis occidentalis

Allergenicity 3/4Blooms spring

Loblolly pine

Pinus taeda

Allergenicity 1/4Blooms spring

Water oak

Quercus nigra

Allergenicity 4/4Blooms spring

Arizona ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Cedar elm

Ulmus crassifolia

Allergenicity 3/4Blooms spring

Pecan

Carya illinoinensis

Allergenicity 3/4Blooms spring

American elm

Ulmus americana

Allergenicity 3/4Blooms spring

Mulberry

Morus

Allergenicity 5/4Blooms spring

Juniper

Juniperus chinensis

Allergenicity 5/4Blooms winter,spring

Willow oak

Quercus phellos

Allergenicity 4/4Blooms spring

Chinese elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

American sycamore

Platanus occidentalis

Allergenicity 4/4Blooms spring

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring

Catalpa

Catalpa

Allergenicity 2/4Blooms spring

Shumard oak

Quercus shumardii

Allergenicity 4/4Blooms spring

Common questions

What is the pollen count in Houston, TX today?

Houston, TX is at a moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. Over the next five days it ranges from 1 to 3 of 5.

Is tree pollen high in Houston, TX right now?

Tree pollen is moderate today at 3 of 5. Sensitive people may notice symptoms.

What plants are causing allergies in Houston, TX?

The main sources right now are Oak, Plane, Elm, Celtis, and Taxodium.