What is the pollen count in South San Francisco today?

Today's pollen levels in South San Francisco: Tree pollen is None, Grass pollen is High, Weed pollen is Low. Grass pollen is the dominant type right now, driven by Grass.

What does a High pollen count mean in South San Francisco?

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 South San Francisco right now?

The primary allergy triggers in South San Francisco today are Grass (Grass). 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 South San Francisco?

When pollen is High in South San Francisco, 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 South San Francisco?

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

South San Francisco, CA Pollen Count Today

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

Live pollen forecast and air quality for South San Francisco, California

📍 South San Francisco, CAToday · Jul 17

6/10

Breathability™ Score

Good day overall with a few allergy-aware adjustments.

🌳Tree Pollen

None

🌱Grass Pollen

High

🌿Weed Pollen

Low

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Today's Pollen Levels in South San Francisco

Grass pollen is the dominant contributor today in South San Francisco, with levels reaching High. Other pollen types are not a significant factor right now. With a Breathability™ Score of 6, conditions are mixed and may vary through the day.

Breathability™ Score is 6/10
Tree pollen is None, led by Alder and Birch
Grass pollen is High, led by Grass
Weed pollen is Low, led by Mugwort and Ragweed
Air quality is Good today

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How Today's Pollen May Affect You

Mild allergy sufferers

You may notice mild irritation at peak times. Grass pollen is elevated; consider shorter midday exposure and keep water handy.

Moderate allergy sufferers

Plan around peak pollen windows. Try errands early or later, and consider a mask in high-traffic outdoor areas.

Severe allergy sufferers

Use high-protection habits today: shorter trips, cleaner indoor air, and reduced exposure during peak pollen hours.

5-Day Pollen Forecast

Today

Jul 16

Overall: Moderate

Tree: None

Grass: Moderate

Weed: Low

Wind: 13 mph

Rain: 7%

Humidity: 74%

Fri

Jul 17

Overall: Moderate

Tree: None

Grass: Moderate

Weed: Low

Wind: 13 mph

Rain: 12%

Humidity: 80%

Sat

Jul 18

Overall: Moderate

Tree: None

Grass: Moderate

Weed: Low

Wind: 12 mph

Rain: 20%

Humidity: 80%

Sun

Jul 19

Overall: Moderate

Tree: None

Grass: Moderate

Weed: Low

Wind: 11 mph

Rain: 19%

Humidity: 81%

Mon

Jul 20

Overall: Moderate

Tree: None

Grass: Moderate

Weed: Low

Wind: 9 mph

Rain: 12%

Humidity: 77%

Tree Pollen in South San Francisco Today

Tree pollen in South San Francisco 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 South San Francisco Today

Grass pollen in South San Francisco is High today, reaching 133.40 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

Grass133.40 grains/m³

Weed Pollen in South San Francisco Today

Weed pollen in South San Francisco is Low today, reaching 14.84 grains/m³. Mugwort and Ragweed 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

Mugwort14.84 grains/m³

Ragweed0 grains/m³

Air Quality in South San Francisco Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

10 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.

PM10Good

16 µg/m³

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

Ozone (O3)Good

56 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

6 µg/m³

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

Sulfur Dioxide (SO2)Good

0.6 µg/m³

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

Carbon Monoxide (CO)Good

93 µg/m³

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

See the full South San Francisco air quality report →

Weather in South San Francisco Today

🌤️

Weather

67°F

Sunny

Humidity

59%

Wind

13 mph W

Feels Like

67°F

Pressure

1012 mb

Frequently Asked Questions

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