Cornelius, OR Pollen Count Today

Live pollen forecast and air quality for Cornelius, Oregon

šŸ“ Cornelius, ORToday Ā· Oct 12
8/10
Breathabilityā„¢ Score
Excellent breathing conditions for most plans today.
šŸŒ³Tree Pollen
None
šŸŒ±Grass Pollen
Low
šŸŒæWeed Pollen
Low
mypollenpal.comAdd to your site ā†’

Today's Pollen Levels in Cornelius

Grass pollen is slightly elevated at Low levels in Cornelius. Overall conditions are manageable for most people. With a Breathabilityā„¢ Score of 8, breathing conditions look good for most people.

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 Cornelius holds at Low every day through Friday.

Today
Oct 12
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 4 mph
Rain: 4%
Humidity: 61%
Tue
Oct 13
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 3 mph
Rain: 13%
Humidity: 59%
Wed
Oct 14
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 5 mph
Rain: 7%
Humidity: 67%
Thu
Oct 15
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 5 mph
Rain: 6%
Humidity: 67%
Fri
Oct 16
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 3 mph
Rain: 7%
Humidity: 52%

Tree Pollen in Cornelius Today

Tree pollen in Cornelius 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/mĀ³
Birch0 grains/mĀ³
Hazel0 grains/mĀ³
Oak0 grains/mĀ³

Grass Pollen in Cornelius Today

Grass pollen in Cornelius is Low today, reaching 0.31 grains/mĀ³. 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

Grass0.31 grains/mĀ³

Weed Pollen in Cornelius Today

Weed pollen in Cornelius is Low today, reaching 0.97 grains/mĀ³. 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

Ragweed0.97 grains/mĀ³
Mugwort0 grains/mĀ³

Air Quality in Cornelius Today

šŸŒ¬ļø
Air Quality
Good
Good

Air Pollutant Breakdown

PM2.5Good
12 Āµg/mĀ³
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
12 Āµg/mĀ³
Larger particles up to 10 micrometers, like dust or pollen. They can irritate your airways and worsen allergies or asthma.
Ozone (O3)Good
17 Āµg/mĀ³
Elevated levels irritate airways and can worsen asthma symptoms.
Nitrogen Dioxide (NO2)Good
22 Āµg/mĀ³
A respiratory irritant from vehicle exhaust that can trigger inflammation in sensitive airways.
Sulfur Dioxide (SO2)Good
1.3 Āµg/mĀ³
Even brief exposure can tighten airways, especially for people with asthma.
Carbon Monoxide (CO)Good
268 Āµg/mĀ³
High levels reduce oxygen delivery in the body, compounding breathing difficulty on high-pollen days.
See the full Cornelius air quality report ā†’

Weather in Cornelius Today

ā˜€ļø
Weather
43Ā°F
Clear
Humidity
84%
Wind
2 mph N
Feels Like
39Ā°F
Pressure
1017 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Pollen shifts week to week in Cornelius. 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 ā†’

Get free daily pollen alerts

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

Sign up free ā†’

Allergy Guides and Resources

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

Browse all guides ā†’

Related Cities in Oregon

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