Texas, United States

Houston, TX Pollen Count Today

View the current allergy index, primary allergen, tree, grass, and weed pollen levels, plus the 5-day pollen forecast for Houston.

Today's pollen count in Houston

Today in Houston, Texas, the forecasted pollen level is moderate with an allergy index of 3. The primary allergen is Birch. Use the forecast below to see whether conditions are likely to rise, ease, or stay steady over the next few days.

AllergyAva shows forecasted pollen levels and allergy risk estimates for Houston. Actual exposure can vary by neighborhood, weather, and time outdoors.

Current level
Moderate
Allergy index
3
Main allergen
Birch

Pollen Level

Moderate Risk
3

Pollen Index

Primary Allergen

Birch

Consider taking antihistamines before heading outside. Keep windows closed.

69°

Temp

31%

Humidity

17

Wind mph

Source: Includes pollen data from Google

Updated May 13, 2026 at 9:31 PM ET.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Tomorrow - Very Low

Worst day this week

Sun - Very High

Today
84°/64°
3
Moderate
Tree2
Grass0
Weed0
Tomorrow
82°/47°
1
Very Low
Tree2
Grass0
Weed0
Sat
79°/48°
5
Very High
Tree1
Grass0
Weed0
Sun
74°/53°
5
Very High
Tree1
Grass0
Weed0
Mon
69°/61°
3
Moderate
Tree2
Grass0
Weed0
None
Very Low
Low
Moderate
High
Very High

Allergen Breakdown

Birch
Moderate
Cedar
Moderate
Oak
Low
Maple
Low

Pollen & Allergy Guide for Houston, TX

Houston, Texas residents can experience significant pollen exposure throughout the year. Tree pollen typically peaks during spring months, while grass pollen dominates in summer. Fall brings elevated ragweed levels, which is one of the most common allergens in the region.

When Is Allergy Season in Houston?

Allergy season in Houston generally begins in early spring as trees start releasing pollen. The most intense period varies by allergen type. Monitoring daily pollen counts with Allergy Ava helps you plan ahead and manage symptoms proactively.

Tips for Managing Allergies in Houston

Track your daily pollen exposure, consult with a local allergist for personalized treatment, and consider starting preventive medications 2-4 weeks before your peak allergy season. Indoor air quality management with HEPA filters can also make a significant difference.

Houston allergy season calendar

Tree pollen

In season now

Spring

Often drives early-season symptoms

Grass pollen

In season now

Late spring to summer

Can rise around lawns, parks, and open areas

Ragweed/weed pollen

Late summer to fall

Major fall allergy trigger

Mold spores

Varies

Often affected by moisture and decaying leaves

Common pollen triggers around Houston

TriggerTypical seasonWhat to know
Tree pollenSpringOften drives early-season symptoms
Grass pollenLate spring to summerCan rise around lawns, parks, and open areas
Ragweed/weed pollenLate summer to fallMajor fall allergy trigger
Mold sporesVariesOften affected by moisture and decaying leaves

Houston pollen count trends in Gulf Coast conditions

Houston allergy conditions are shaped by humidity, long growing seasons, and a wide mix of local vegetation. People searching for a Houston pollen forecast often want to understand how changing weather, storms, and high moisture levels influence airborne allergens across the metro area.

Tree pollen, grasses, and weeds can all contribute to symptoms in Houston, depending on the season. Local pollen tracking is useful because shifts in rainfall and wind can rapidly change how allergens move through the city.

Frequently asked questions about pollen in Houston

What is the pollen count in Houston today?

Today in Houston, Texas, the pollen level is moderate with an allergy index of 3. The main allergen to watch is Birch.

When is allergy season in Houston, Texas?

Allergy season in Houston, Texas can vary by allergen and weather conditions. Tree pollen often rises in spring, grass pollen becomes more active in late spring and summer, and weed pollen can remain elevated later in the year depending on local climate and vegetation.

How often should I check the pollen forecast in Houston?

If you have seasonal allergies in Houston, it is helpful to check the pollen forecast daily during peak allergy periods. Shifts in wind, rainfall, temperature, and humidity can all change local pollen exposure from one day to the next.

What pollen types affect people in Houston, Texas?

Houston residents may be affected by tree pollen, grass pollen, and weed pollen during different parts of the year. The strongest trigger depends on the season, nearby vegetation, and current weather conditions.