What is the pollen count in San Diego today?

Today's pollen levels in San Diego: Tree pollen is None, Grass pollen is Moderate, Weed pollen is High. Weed pollen is the dominant type right now, driven by Ragweed and Mugwort.

What does a High pollen count mean in San Diego?

A High pollen count means concentrations are significant. Most allergy sufferers will notice symptoms, and even people with mild sensitivity may feel some irritation.

What are the main allergy triggers in San Diego right now?

The primary allergy triggers in San Diego today are Grass (Grass) and Weed (Ragweed and Mugwort). These pollen types are at elevated levels and are most likely to cause symptoms for sensitive people.

What should allergy sufferers do when pollen is High in San Diego?

When pollen is High in San Diego, limit outdoor time during midday when concentrations peak. Keep windows closed, shower after being outside, and consider taking antihistamines before symptoms start.

Does weather affect pollen levels in San Diego?

Yes, weather directly affects pollen levels in San Diego. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles.

San Diego, CA Pollen Count Today

Name: Pollen Data for San Diego
Creator: MyPollenPal
Keywords: pollen, air quality, allergies, forecast

Live pollen forecast and air quality for San Diego, California

📍 San Diego, CAToday · Aug 30

2/10

Breathability™ Score

Challenging day - reduce exposure during peak pollen times.

🌳Tree Pollen

None

🌱Grass Pollen

Moderate

🌿Weed Pollen

High

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Today's Pollen Levels in San Diego

Weed pollen and Grass pollen are both elevated today in San Diego, which is driving the Breathability™ Score down. People sensitive to multiple pollen types may notice stronger symptoms. With a Breathability™ Score of 2, today may feel like a tougher allergy day.

Breathability™ Score is 2/10
Tree pollen is None, led by Alder and Birch
Grass pollen is Moderate, led by Grass
Weed pollen is High, led by Ragweed and Mugwort
Air quality is Unhealthy for Sensitive Groups today

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How Today's Pollen May Affect You

Mild allergy sufferers

You may feel symptoms sooner today. Weed pollen is elevated and air quality is Unhealthy for Sensitive Groups, so lean toward shorter outings and cleaner indoor air.

Moderate allergy sufferers

Today may be rough. Limit prolonged outdoor time, keep indoor air filtered, and favor lower-exposure times of day.

Severe allergy sufferers

This may be a high-burden day. Minimize outdoor exposure where possible and focus on indoor spaces with filtered air.

5-Day Pollen Forecast

Today

Aug 29

Overall: Moderate

Tree: None

Grass: Low

Weed: Moderate

Wind: 12 mph

Rain: 12%

Humidity: 80%

Sun

Aug 30

Overall: Moderate

Tree: None

Grass: Low

Weed: Moderate

Wind: 12 mph

Rain: 6%

Humidity: 72%

Mon

Aug 31

Overall: Moderate

Tree: None

Grass: Low

Weed: Moderate

Wind: 12 mph

Rain: 4%

Humidity: 65%

Tue

Sep 1

Overall: Moderate

Tree: None

Grass: Low

Weed: Moderate

Wind: 14 mph

Rain: 5%

Humidity: 60%

Wed

Sep 2

Overall: High

Tree: None

Grass: Low

Weed: High

Wind: 14 mph

Rain: 5%

Humidity: 61%

Tree Pollen in San Diego Today

Tree pollen in San Diego is None today. Tree pollen season typically runs from early spring through late May, peaking when deciduous trees release their pollen. On low days like today, outdoor activities are generally comfortable for most allergy sufferers.

Species Breakdown

Alder0 grains/m³

Birch0 grains/m³

Hazel0 grains/m³

Oak0 grains/m³

Grass Pollen in San Diego Today

Grass pollen in San Diego is Moderate today, reaching 32.12 grains/m³. Grass is currently elevated. People with grass pollen sensitivity may notice nasal congestion and itchy eyes, especially during outdoor activities.

Common Symptoms

Itchy nose and eyes
Sneezing fits
Nasal congestion
Watery eyes
Coughing or wheezing for sensitive people

Species Breakdown

Grass32.12 grains/m³

Weed Pollen in San Diego Today

Weed pollen in San Diego is High today, reaching 120.91 grains/m³. Ragweed and Mugwort are the primary driver. Ragweed is the most common allergen in this category, and elevated levels can trigger persistent symptoms even in people who are only mildly sensitive.

Common Symptoms

Persistent sneezing
Runny nose
Itchy eyes and throat
Nasal congestion
Fatigue from prolonged exposure

Species Breakdown

Ragweed120.91 grains/m³

Mugwort107.45 grains/m³

Air Quality in San Diego Today

🌬️

Air Quality

Unhealthy for Sensitive Groups

Air Pollutant Breakdown

PM2.5Unhealthy

64 µg/m³

Tiny particles smaller than 2.5 micrometers that can reach deep into your lungs and bloodstream. High levels can affect breathing and heart health.

PM10Moderate

74 µg/m³

Larger particles up to 10 micrometers, like dust or pollen. They can irritate your airways and worsen allergies or asthma.

Ozone (O3)Moderate

135 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

7.7 µg/m³

A respiratory irritant from vehicle exhaust that can trigger inflammation in sensitive airways.

Sulfur Dioxide (SO2)Good

1.4 µg/m³

Even brief exposure can tighten airways, especially for people with asthma.

Carbon Monoxide (CO)Good

415 µg/m³

High levels reduce oxygen delivery in the body, compounding breathing difficulty on high-pollen days.

See the full San Diego air quality report →

Weather in San Diego Today

🌤️

Weather

80°F

Smoky haze

Humidity

67%

Wind

8 mph WNW

Feels Like

83°F

Pressure

1010 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Weed pollen is running High in San Diego today. If cetirizine (Zyrtec) or a steroid nasal spray stopped holding your symptoms down, or they drag on for months at a time, a board-certified allergist can test exactly what you react to and treat the cause instead of the symptom.

See 5 board-certified allergists in California →

Get free daily pollen alerts

Morning alerts for San Diego when pollen is high. One email a day, only when it matters.

Allergy Guides and Resources

Seasonal pollen guides, daily city rankings, and practical tips for managing your allergies.

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