What is the pollen count in Portland today?

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

What will the pollen count be tomorrow in Portland?

Pollen in Portland is forecast to reach Low tomorrow. Grass 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 Portland?

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 Portland right now?

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

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

Pollen levels are low in Portland 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 Portland?

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

Portland, OR Pollen Count Today

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

Live pollen forecast and air quality for Portland, Oregon

📍 Portland, ORToday · Oct 14

6/10

Breathability™ Score

Good day overall with a few allergy-aware adjustments.

🌳Tree Pollen

None

🌱Grass Pollen

Low

🌿Weed Pollen

Low

mypollenpal.comAdd to your site →

Today's Pollen Levels in Portland

Grass pollen is slightly elevated at Low levels in Portland. Overall conditions are manageable for most people. 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 Low, led by Grass
Weed pollen is Low, led by Ragweed and Mugwort
Air quality is Moderate today

Yesterday's Pollen in Portland

→Tree pollen: None yesterday, None today

→Grass pollen: Low yesterday, Low today

→Weed pollen: Low yesterday, Low today

How Today's Pollen May Affect You

Mild allergy sufferers

You may notice mild irritation at peak times. Weed 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

Pollen in Portland holds at Low every day through Saturday.

Today

Oct 13

Overall: Low

Tree: None

Grass: Low

Weed: Low

Wind: 3 mph

Rain: 6%

Humidity: 53%

Wed

Oct 14

Overall: Low

Tree: None

Grass: Low

Weed: Low

Wind: 5 mph

Rain: 5%

Humidity: 58%

Thu

Oct 15

Overall: Low

Tree: None

Grass: Low

Weed: Low

Wind: 10 mph

Rain: 3%

Humidity: 55%

Fri

Oct 16

Overall: Low

Tree: None

Grass: Low

Weed: None

Wind: 4 mph

Rain: 5%

Humidity: 38%

Sat

Oct 17

Overall: Low

Tree: None

Grass: Low

Weed: None

Wind: 9 mph

Rain: 57% (may wash pollen out)

Humidity: 64%

Tree Pollen in Portland Today

Tree pollen in Portland 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

Alder pollen in Portland →0 grains/m³

Birch pollen in Portland →0 grains/m³

Hazel0 grains/m³

Oak0 grains/m³

Grass Pollen in Portland Today

Grass pollen in Portland is Low today, reaching 1.03 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

Grass pollen in Portland →1.03 grains/m³

Weed Pollen in Portland Today

Weed pollen in Portland is Low today, reaching 1.36 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

Ragweed pollen in Portland →1.36 grains/m³

Mugwort0 grains/m³

Air Quality in Portland Today

🌬️

Air Quality

Moderate

Air Pollutant Breakdown

PM2.5Moderate

25 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

25 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

18 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

53.2 µg/m³

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

Sulfur Dioxide (SO2)Good

2.1 µg/m³

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

Carbon Monoxide (CO)Good

418 µg/m³

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

See the full Portland air quality report →

Weather in Portland Today

☁️

Weather

59°F

Partly Cloudy

Humidity

49%

Wind

2 mph NNE

Feels Like

56°F

Pressure

1023 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Pollen shifts week to week in Portland. 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 Oregon →

Get free daily pollen alerts

Morning alerts for Portland when pollen is high. One email a day, only when it matters.

Join 1,808 allergy sufferers getting daily pollen alerts.

Allergy Guides and Resources

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

Browse all guides →

Related Cities in Oregon

Looking for more places? Browse popular cities or return to the Oregon page.

Portland pollen by allergen

Grass pollen Alder pollen Birch pollen Ragweed pollen