What is the pollen count in Holliston today?

Today's pollen levels in Holliston: Tree pollen is Moderate, Grass pollen is None, Weed pollen is None. Tree pollen is the dominant type right now, driven by Oak and Birch.

What does a Moderate pollen count mean in Holliston?

A Moderate pollen count means levels are noticeable. People with pollen sensitivities may experience mild symptoms like sneezing or itchy eyes, especially during extended time outdoors.

What are the main allergy triggers in Holliston right now?

The primary allergy triggers in Holliston today are Tree (Oak and Birch). 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 Moderate in Holliston?

With Moderate pollen in Holliston, basic precautions help: keep windows closed during peak hours, rinse off after outdoor time, and monitor your symptoms. Most activities can continue with awareness.

Does weather affect pollen levels in Holliston?

Yes, weather directly affects pollen levels in Holliston. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Higher humidity today (90%) may help keep some pollen grounded.

Holliston, MA Pollen Count Today

Live pollen forecast and air quality for Holliston, Massachusetts

Breathability™ Score

/10

Challenging day - reduce exposure during peak pollen times.

Today's Pollen Levels in Holliston

Tree pollen is the dominant contributor today in Holliston, 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 Very High, led by Oak and Birch
Grass pollen is None, led by Grass
Weed pollen is None, led by Ragweed and Mugwort
Air quality is Good today

How Today's Pollen May Affect You

Mild allergy sufferers

You may feel symptoms sooner today. Tree 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

Apr 15

Overall: Very High

Tree: Very High

Grass: None

Weed: None

Wind: 9 mph

Rain: 65% (may wash pollen out)

Humidity: 76%

Thu

Apr 16

Overall: Moderate

Tree: Moderate

Grass: None

Weed: None

Wind: 11 mph

Rain: 86% (may wash pollen out)

Humidity: 78%

Fri

Apr 17

Overall: Moderate

Tree: Moderate

Grass: None

Weed: None

Wind: 10 mph

Rain: 88% (may wash pollen out)

Humidity: 82%

Sat

Apr 18

Overall: Very High

Tree: Very High

Grass: None

Weed: None

Wind: 10 mph

Rain: 0%

Humidity: 83%

Sun

Apr 19

Overall: Very High

Tree: Very High

Grass: None

Weed: None

Wind: 13 mph

Rain: 76% (may wash pollen out)

Humidity: 84%

Tree Pollen in Holliston Today

Tree pollen in Holliston is Moderate today, reaching 52.92 grains/m³. Oak and Birch 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

Oak52.92 grains/m³

Birch40.06 grains/m³

Alder0 grains/m³

Hazel0 grains/m³

Grass Pollen in Holliston Today

Grass pollen in Holliston is None today. Grass pollen season typically peaks from late spring through summer (May through August in most regions). On low-count days, grass allergy sufferers can generally spend time outdoors without significant symptoms.

Species Breakdown

Grass0 grains/m³

Weed Pollen in Holliston Today

Weed pollen in Holliston 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 Holliston Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

7 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

8 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

97 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

3.1 µg/m³

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

Sulfur Dioxide (SO2)Good

2 µg/m³

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

Carbon Monoxide (CO)Good

208.8 µg/m³

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

Weather in Holliston Today

🌤️

Weather

60°F

Sunny

Humidity

90%

Wind

3 mph WSW

Feels Like

60°F

Pressure

1012 mb

Frequently Asked Questions

Allergy Guides and Resources

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