Texas, United States

San Antonio, TX Pollen Count Today

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

Updated May 13, 2026 at 9:31 PM ET

Today's pollen count in San Antonio

Today in San Antonio, Texas, the forecasted pollen level is very high with an allergy index of 5. 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 San Antonio. Actual exposure can vary by neighborhood, weather, and time outdoors.

Current level: Very High
Allergy index: 5
Main allergen: Birch

Pollen Level

Very High Risk

Pollen Index

Primary Allergen

Birch

Stay indoors when possible. Use HEPA filters and take prescribed medication.

88°

Temp

52%

Humidity

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

Today - Very Low

Worst day this week

Tomorrow - Very High

Today

80°/51°

Very Low

Tree4

Grass0

Weed0

Tomorrow

81°/62°

Very High

Tree4

Grass0

Weed0

Sat

86°/46°

Low

Tree4

Grass0

Weed0

Sun

85°/56°

Moderate

Tree5

Grass0

Weed0

Mon

89°/59°

Low

Tree4

Grass0

Weed0

None

Very Low

Low

Moderate

High

Very High

Allergen Breakdown

Birch

Very High

Oak

High

Maple

Low

Cedar

Very Low

Pollen & Allergy Guide for San Antonio, TX

San Antonio, 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 San Antonio?

Allergy season in San Antonio 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 San Antonio

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.

San Antonio 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 San Antonio

Trigger	Typical season	What to know
Tree pollen	Spring	Often drives early-season symptoms
Grass pollen	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

San Antonio pollen forecast and South Central Texas allergens

San Antonio allergy conditions often draw attention during cedar season, but local residents can also be affected by oak, grasses, and weeds through much of the year. People searching for a San Antonio pollen forecast usually want local guidance during spring tree pollen peaks and later grass or weed seasons.

Because San Antonio sits in a part of Texas where seasonal transitions can be abrupt, pollen exposure may feel intense during certain stretches of spring and fall. Daily pollen tracking helps residents plan outdoor time and reduce surprise flare-ups.

Frequently asked questions about pollen in San Antonio

What is the pollen count in San Antonio today?

Today in San Antonio, Texas, the pollen level is very high with an allergy index of 5. The main allergen to watch is Birch.

When is allergy season in San Antonio, Texas?

Allergy season in San Antonio, 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 San Antonio?

If you have seasonal allergies in San Antonio, 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 San Antonio, Texas?

San Antonio 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.