What is the pollen count in Portsmouth today?

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

What does a Low pollen count mean in Portsmouth?

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 Portsmouth right now?

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

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

Pollen levels are low in Portsmouth 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 Portsmouth?

Yes, weather directly affects pollen levels in Portsmouth. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Higher humidity today (94%) may help keep some pollen grounded.

Portsmouth, NH Pollen Count Today

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

Live pollen forecast and air quality for Portsmouth, New Hampshire

📍 Portsmouth, NHToday · May 15

8/10

Breathability™ Score

Excellent breathing conditions for most plans today.

🌳Tree Pollen

Low

🌱Grass Pollen

None

🌿Weed Pollen

None

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Today's Pollen Levels in Portsmouth

Tree pollen is slightly elevated at Low levels in Portsmouth. 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 Low, led by Birch and Oak
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

Most plans can stay the same today. Tree 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

Today

May 14

Overall: Low

Tree: Low

Grass: None

Weed: None

Wind: 12 mph

Rain: 88% (may wash pollen out)

Humidity: 90%

Fri

May 15

Overall: Moderate

Tree: Moderate

Grass: None

Weed: None

Wind: 13 mph

Rain: 91% (may wash pollen out)

Humidity: 98%

Sat

May 16

Overall: Moderate

Tree: Moderate

Grass: Low

Weed: None

Wind: 10 mph

Rain: 0%

Humidity: 72%

Sun

May 17

Overall: Moderate

Tree: Moderate

Grass: Low

Weed: None

Wind: 11 mph

Rain: 0%

Humidity: 62%

Mon

May 18

Overall: Moderate

Tree: Moderate

Grass: Low

Weed: None

Wind: 13 mph

Rain: 0%

Humidity: 71%

Tree Pollen in Portsmouth Today

Tree pollen in Portsmouth is Low today, reaching 15.16 grains/m³. Birch and Oak 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

Birch15.16 grains/m³

Oak7.56 grains/m³

Alder0 grains/m³

Hazel0 grains/m³

Grass Pollen in Portsmouth Today

Grass pollen in Portsmouth 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 Portsmouth Today

Weed pollen in Portsmouth 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 Portsmouth Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

3 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

5 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

85 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

2.5 µg/m³

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

Sulfur Dioxide (SO2)Good

1.1 µg/m³

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

Carbon Monoxide (CO)Good

122.8 µg/m³

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

Weather in Portsmouth Today

🌫️

Weather

50°F

Mist

Humidity

94%

Wind

7 mph NE

Feels Like

48°F

Pressure

1005 mb

Frequently Asked Questions

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