Pollen in Houston, TX

About pollen in Houston

Houston's air is essentially free of pollen today, with tree levels reading at zero. Anyone who typically deals with allergy symptoms should get a welcome break, as there is little to trigger a reaction right now. This calm stretch looks set to continue over the next few days, with tree pollen expected to remain absent. This tracks with the season: local trees such as oak, magnolia, ligustrum, crape myrtle (Lagerstroemia), and Washingtonia palms have already released their heaviest pollen loads earlier in the year, and midsummer in Houston tends to bring a lull before late-summer and fall triggers, like ragweed, can become more relevant.

What to do today

• Pollen is minimal today, so it's a great time to be outside.
• No special pollen precautions are needed right now.

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 has no notable tree, grass, or weed pollen today.

What plants are causing allergies in Houston, TX?

The main sources right now are Ligustrum, Magnolia, Lagerstroemia, Oak, and Washingtonia.