California, United States

San Diego, CA Pollen Count Today

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

Updated May 13, 2026 at 5:53 PM ET

Today's pollen count in San Diego

Today in San Diego, California, the forecasted pollen level is moderate with an allergy index of 3. The primary allergen is Grasses. 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 Diego. Actual exposure can vary by neighborhood, weather, and time outdoors.

Current level: Moderate
Allergy index: 3
Main allergen: Grasses

Pollen Level

Moderate Risk

Pollen Index

Primary Allergen

Grasses

Consider taking antihistamines before heading outside. Keep windows closed.

72°

Temp

55%

Humidity

Wind mph

Source: Includes pollen data from Google

Updated May 13, 2026 at 5:53 PM ET.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Tomorrow - Low

Worst day this week

Sun - Moderate

Today

84°/61°

Moderate

Tree1

Grass3

Weed0

Tomorrow

81°/59°

Low

Tree1

Grass2

Weed0

Fri

84°/61°

Moderate

Tree1

Grass3

Weed0

Sat

81°/59°

Low

Tree1

Grass2

Weed0

Sun

84°/61°

Moderate

Tree1

Grass3

Weed0

None

Very Low

Low

Moderate

High

Very High

Allergen Breakdown

Grasses

Moderate

Oak

Out of seasonVery Low

Pollen & Allergy Guide for San Diego, CA

San Diego, California 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 Diego?

Allergy season in San Diego 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 Diego

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 Diego 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 Diego

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 Diego pollen forecast in a coastal Southern California climate

San Diego allergy seasons are shaped by mild temperatures, coastal airflow, and regional landscaping that can keep allergens present for long stretches of the year. Searchers looking for a San Diego pollen forecast often want daily visibility into local conditions before beach, school, or outdoor plans.

Tree pollen, grasses, and weeds can all affect San Diego residents depending on the season and neighborhood. Wind, dry periods, and inland-to-coast weather differences can all change how symptoms feel from one day to the next.

Frequently asked questions about pollen in San Diego

What is the pollen count in San Diego today?

Today in San Diego, California, the pollen level is moderate with an allergy index of 3. The main allergen to watch is Grasses.

When is allergy season in San Diego, California?

Allergy season in San Diego, California 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 Diego?

If you have seasonal allergies in San Diego, 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 Diego, California?

San Diego 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.