What is the pollen count in Arcata today?

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

What does a Very High pollen count mean in Arcata?

A Very High pollen count means concentrations are at their peak. Nearly all allergy sufferers will experience noticeable symptoms, and limiting outdoor exposure is recommended.

What are the main allergy triggers in Arcata right now?

The primary allergy triggers in Arcata today are Grass (Grass). These pollen types are at elevated levels and are most likely to cause symptoms for sensitive people.

What should allergy sufferers do when pollen is Very High in Arcata?

When pollen is Very High in Arcata, 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 Arcata?

Yes, weather directly affects pollen levels in Arcata. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Higher humidity today (83%) may help keep some pollen grounded.

Arcata, CA Pollen Count Today

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

Live pollen forecast and air quality for Arcata, California

📍 Arcata, CAToday · Jul 17

4/10

Breathability™ Score

Mixed conditions - sensitive groups may want extra precautions.

🌳Tree Pollen

None

🌱Grass Pollen

Very High

🌿Weed Pollen

Low

mypollenpal.comAdd to your site →

Today's Pollen Levels in Arcata

Grass pollen is the dominant contributor today in Arcata, with levels reaching Very High. Other pollen types are not a significant factor right now. With a Breathability™ Score of 4, conditions are mixed and may vary through the day.

Breathability™ Score is 4/10
Tree pollen is None, led by Alder and Birch
Grass pollen is Very High, led by Grass
Weed pollen is Low, led by Mugwort and Ragweed
Air quality is Good today

Today’s pick

Flonase Sensimist Nasal Spray →

Targeted nasal spray helps with congestion and sneezing from grass pollen.

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. Grass 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

Jul 16

Overall: High

Tree: None

Grass: High

Weed: Low

Wind: 11 mph

Rain: 18%

Humidity: 85%

Fri

Jul 17

Overall: Very High

Tree: None

Grass: Very High

Weed: Low

Wind: 9 mph

Rain: 19%

Humidity: 84%

Sat

Jul 18

Overall: High

Tree: None

Grass: High

Weed: Low

Wind: 8 mph

Rain: 22%

Humidity: 81%

Sun

Jul 19

Overall: Very High

Tree: None

Grass: Very High

Weed: Low

Wind: 7 mph

Rain: 17%

Humidity: 80%

Mon

Jul 20

Overall: Very High

Tree: None

Grass: Very High

Weed: Low

Wind: 7 mph

Rain: 17%

Humidity: 79%

Tree Pollen in Arcata Today

Tree pollen in Arcata 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 Arcata Today

Grass pollen in Arcata is Very High today, reaching 276.79 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

Grass276.79 grains/m³

Weed Pollen in Arcata Today

Weed pollen in Arcata is Low today, reaching 3.33 grains/m³. Mugwort and Ragweed 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

Mugwort3.33 grains/m³

Ragweed0 grains/m³

Air Quality in Arcata Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

9 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

14 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

64 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

1.9 µg/m³

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

Sulfur Dioxide (SO2)Good

0.5 µg/m³

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

Carbon Monoxide (CO)Good

94 µg/m³

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

See the full Arcata air quality report →

Weather in Arcata Today

☁️

Weather

57°F

Partly cloudy

Humidity

83%

Wind

6 mph N

Feels Like

56°F

Pressure

1017 mb

Frequently Asked Questions

Get free daily pollen alerts

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

Join 1,587 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 California

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