What is the pollen count in Nicasio today?

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

What does a Very High pollen count mean in Nicasio?

A Very High pollen count means concentrations are at their peak. Nearly all allergy sufferers will experience noticeable symptoms, and limiting outdoor exposure is recommended.

What are the main allergy triggers in Nicasio right now?

The primary allergy triggers in Nicasio today are Grass (Grass). These pollen types are at elevated levels and are most likely to cause symptoms for sensitive individuals.

What should allergy sufferers do when pollen is Very High in Nicasio?

When pollen is Very High in Nicasio, 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 Nicasio?

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

Nicasio, CA Pollen Count Today

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

Live pollen forecast and air quality for Nicasio, California

📍 Nicasio, CAToday · May 31

2/10

Breathability™ Score

Challenging day - reduce exposure during peak pollen times.

🌳Tree Pollen

Low

🌱Grass Pollen

Very High

🌿Weed Pollen

None

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Today's Pollen Levels in Nicasio

Grass pollen is the dominant contributor today in Nicasio, with levels reaching Very High. Other pollen types are not a significant factor right now. With a Breathability™ Score of 2, today may feel like a tougher allergy day.

Breathability™ Score is 2/10
Tree pollen is Low, led by Birch and Alder
Grass pollen is Very High, led by Grass
Weed pollen is None, led by Ragweed and Mugwort
Air quality is Good today

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Yesterday's Pollen in Nicasio

→Tree pollen: Low yesterday, Low today

→Grass pollen: Very High yesterday, Very High today

→Weed pollen: None yesterday, None today

How Today's Pollen May Affect You

Mild allergy sufferers

You may feel symptoms sooner today. Grass pollen is elevated and air quality is Good, so lean toward shorter outings and cleaner indoor air.

Moderate allergy sufferers

Today may feel challenging. Limit prolonged outdoor time, keep indoor air filtered, and prioritize 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

May 30

Overall: Very High

Tree: Low

Grass: Very High

Weed: None

Wind: 9 mph

Rain: 0%

Humidity: 65%

Sun

May 31

Overall: Very High

Tree: None

Grass: Very High

Weed: None

Wind: 9 mph

Rain: 0%

Humidity: 56%

Mon

Jun 1

Overall: Very High

Tree: None

Grass: Very High

Weed: None

Wind: 8 mph

Rain: 0%

Humidity: 67%

Tue

Jun 2

Overall: Very High

Tree: None

Grass: Very High

Weed: None

Wind: 9 mph

Rain: 0%

Humidity: 75%

Wed

Jun 3

Overall: Very High

Tree: None

Grass: Very High

Weed: None

Wind: 12 mph

Rain: 0%

Humidity: 67%

Tree Pollen in Nicasio Today

Tree pollen in Nicasio is Low today, reaching 0.53 grains/m³. Birch and Alder are the dominant contributors. At this level, most people with tree pollen allergies will experience symptoms, and even mildly sensitive individuals may notice eye irritation or sneezing.

Common Symptoms

Sneezing
Runny or stuffy nose
Itchy, watery eyes
Scratchy throat
Sinus pressure

Species Breakdown

Birch0.53 grains/m³

Alder0 grains/m³

Hazel0 grains/m³

Oak0 grains/m³

Grass Pollen in Nicasio Today

Grass pollen in Nicasio is Very High today, reaching 451.20 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 individuals

Species Breakdown

Grass451.20 grains/m³

Weed Pollen in Nicasio Today

Weed pollen in Nicasio is None today. Weed pollen season runs from late summer into fall (August through October), with ragweed as the primary trigger for most allergy sufferers. Current levels are low enough that most people should feel comfortable outdoors.

Species Breakdown

Ragweed0 grains/m³

Mugwort0 grains/m³

Air Quality in Nicasio Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

11 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

15 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

54 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

9.3 µg/m³

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

Sulfur Dioxide (SO2)Good

1.5 µg/m³

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

Carbon Monoxide (CO)Good

135.9 µg/m³

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

Weather in Nicasio Today

☀️

Weather

62°F

Clear

Humidity

47%

Wind

3 mph W

Feels Like

62°F

Pressure

1018 mb

Frequently Asked Questions

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