What is the pollen count in Boston today?

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

What will the pollen count be tomorrow in Boston?

Pollen in Boston is forecast to reach Low tomorrow. Weed pollen is the main driver. That's a full-day figure, so early morning usually runs higher than late afternoon. Check again in the morning, because wind and rain can shift it overnight.

What does a Low pollen count mean in Boston?

A Low pollen count means concentrations are minimal. Most people, including those with mild allergies, can spend time outdoors comfortably.

What are the main allergy triggers in Boston right now?

Pollen levels across all types are currently low in Boston. Most allergy sufferers should find conditions manageable today.

What should allergy sufferers do when pollen is Low in Boston?

Pollen levels are low in Boston today, so most outdoor activities should be comfortable. It is still a good idea to check levels daily, since conditions can change quickly with wind and weather shifts.

Does weather affect pollen levels in Boston?

Yes, weather directly affects pollen levels in Boston. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Higher humidity today (92%) may help keep some pollen grounded.

Boston, MA Pollen Count Today

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

Live pollen forecast and air quality for Boston, Massachusetts

📍 Boston, MAToday · Oct 14

8/10

Breathability™ Score

Excellent breathing conditions for most plans today.

🌳Tree Pollen

None

🌱Grass Pollen

None

🌿Weed Pollen

Low

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Today's Pollen Levels in Boston

Weed pollen is slightly elevated at Low levels in Boston. Overall conditions are manageable for most people. With a Breathability™ Score of 8, breathing conditions look good for most people.

Breathability™ Score is 8/10
Tree pollen is None, led by Alder and Birch
Grass pollen is None, led by Grass
Weed pollen is Low, led by Ragweed and Mugwort
Air quality is Good today

Yesterday's Pollen in Boston

→Tree pollen: None yesterday, None today

→Grass pollen: None yesterday, None today

→Weed pollen: Low yesterday, Low today

How Today's Pollen May Affect You

Mild allergy sufferers

Most plans can stay the same today. Weed pollen is elevated and air quality is Good, so a quick rinse after time outside may help.

Moderate allergy sufferers

Conditions look manageable with routine precautions. Keep windows closed during peak pollen periods and shower after outdoor time.

Severe allergy sufferers

Even on a better day, keep your usual high-protection routine and avoid long exposure when pollen spikes.

5-Day Pollen Forecast

Pollen in Boston holds at Low every day through Sunday.

Today

Oct 14

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 13 mph

Rain: 71% (may wash pollen out)

Humidity: 79%

Thu

Oct 15

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 15 mph (may spread pollen)

Rain: 5%

Humidity: 59%

Fri

Oct 16

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 15 mph (may spread pollen)

Rain: 90% (may wash pollen out)

Humidity: 86%

Sat

Oct 17

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 18 mph (may spread pollen)

Rain: 68% (may wash pollen out)

Humidity: 62%

Sun

Oct 18

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 11 mph

Rain: 3%

Humidity: 54%

Rain is likely Friday (90% chance). The hour or two right after it stops is usually the cleanest air of the day. Plan around Saturday though. Pollen often climbs the day after rain, when plants use the moisture to release a fresh burst.

Tree Pollen in Boston Today

Tree pollen in Boston 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 Boston Today

Grass pollen in Boston 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 Boston Today

Weed pollen in Boston is Low today, reaching 3.78 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

Ragweed3.78 grains/m³

Mugwort0 grains/m³

Air Quality in Boston Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

8 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

67 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

16.9 µg/m³

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

Sulfur Dioxide (SO2)Good

1.9 µg/m³

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

Carbon Monoxide (CO)Good

281 µg/m³

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

See the full Boston air quality report →

Weather in Boston Today

🌤️

Weather

65°F

Sunny

Humidity

92%

Wind

9 mph WSW

Feels Like

64°F

Pressure

1009 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Pollen shifts week to week in Boston. 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 Massachusetts →

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Allergy Guides and Resources

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

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