What is the pollen count in Lake Oswego today?

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

What does a High pollen count mean in Lake Oswego?

A High pollen count means concentrations are significant. Most allergy sufferers will notice symptoms, and even people with mild sensitivity may feel some irritation.

What are the main allergy triggers in Lake Oswego right now?

The primary allergy triggers in Lake Oswego 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 High in Lake Oswego?

When pollen is High in Lake Oswego, 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 Lake Oswego?

Yes, weather directly affects pollen levels in Lake Oswego. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Higher humidity today (89%) may help keep some pollen grounded.

Lake Oswego, OR Pollen Count Today

Live pollen forecast and air quality for Lake Oswego, Oregon

Breathability™ Score

/10

Good day overall with a few allergy-aware adjustments.

Today's Pollen Levels in Lake Oswego

Tree pollen is slightly elevated at Moderate levels in Lake Oswego. 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 Moderate, led by Oak and Birch
Grass pollen is Low, led by Grass
Weed pollen is None, led by Ragweed and Mugwort
Air quality is Good today

Today’s pick

Zyrtec 24-Hour Antihistamine →

A once-daily antihistamine is the first line of defense on high tree pollen days.

As an Amazon Associate, we earn from qualifying purchases.

How Today's Pollen May Affect You

Mild allergy sufferers

You may notice mild irritation at peak times. Tree 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

Today

Apr 14

Overall: Moderate

Tree: Moderate

Grass: Low

Weed: None

Wind: 17 mph (may spread pollen)

Rain: 84% (may wash pollen out)

Humidity: 85%

Wed

Apr 15

Overall: Moderate

Tree: Moderate

Grass: Low

Weed: None

Wind: 16 mph (may spread pollen)

Rain: 84% (may wash pollen out)

Humidity: 84%

Thu

Apr 16

Overall: Moderate

Tree: Moderate

Grass: Low

Weed: None

Wind: 8 mph

Rain: 87% (may wash pollen out)

Humidity: 82%

Fri

Apr 17

Overall: High

Tree: High

Grass: Low

Weed: None

Wind: 4 mph

Rain: 0%

Humidity: 73%

Sat

Apr 18

Overall: Very High

Tree: Very High

Grass: Low

Weed: None

Wind: 4 mph

Rain: 0%

Humidity: 65%

Tree Pollen in Lake Oswego Today

Tree pollen in Lake Oswego is High today, reaching 98.68 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

Oak98.68 grains/m³

Birch53.85 grains/m³

Alder0.30 grains/m³

Hazel0 grains/m³

Grass Pollen in Lake Oswego Today

Grass pollen in Lake Oswego is Low today, reaching 0.04 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

Grass0.04 grains/m³

Weed Pollen in Lake Oswego Today

Weed pollen in Lake Oswego 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 Lake Oswego 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

3 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

78 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

5 µg/m³

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

Sulfur Dioxide (SO2)Good

1.6 µg/m³

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

Carbon Monoxide (CO)Good

164.8 µg/m³

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

Weather in Lake Oswego Today

🌧️

Weather

48°F

Light rain

Humidity

89%

Wind

13 mph SSW

Feels Like

43°F

Pressure

1017 mb

Frequently Asked Questions

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.