What is the pollen count in Eureka today?

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

What will the pollen count be tomorrow in Eureka?

Pollen in Eureka is forecast to reach High tomorrow. Weed 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 Very High pollen count mean in Eureka?

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 Eureka right now?

The primary allergy triggers in Eureka today are Weed (Ragweed and Mugwort). 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 Eureka?

When pollen is Very High in Eureka, 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 Eureka?

Yes, weather directly affects pollen levels in Eureka. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Higher humidity today (76%) may help keep some pollen grounded.

Eureka, SD Pollen Count Today

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

Live pollen forecast and air quality for Eureka, South Dakota

📍 Eureka, SDToday · Sep 19

2/10

Breathability™ Score

Challenging day - reduce exposure during peak pollen times.

🌳Tree Pollen

None

🌱Grass Pollen

Low

🌿Weed Pollen

Very High

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Today's Pollen Levels in Eureka

Weed pollen is the dominant contributor today in Eureka, with levels reaching Very High. Other pollen types are not a significant factor right now. With a Breathability™ Score of 2, today may feel like a tougher allergy day.

Breathability™ Score is 2/10
Tree pollen is None, led by Alder and Birch
Grass pollen is Low, led by Grass
Weed pollen is Very High, led by Ragweed and Mugwort
Air quality is Good today

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How Today's Pollen May Affect You

Mild allergy sufferers

You may feel symptoms sooner today. Weed pollen is elevated and air quality is Good, so lean toward shorter outings and cleaner indoor air.

Moderate allergy sufferers

Today may be rough. Limit prolonged outdoor time, keep indoor air filtered, and favor lower-exposure times of day.

Severe allergy sufferers

This may be a high-burden day. Minimize outdoor exposure where possible and focus on indoor spaces with filtered air.

5-Day Pollen Forecast

Pollen in Eureka eases to High by tomorrow.

Today

Sep 19

Overall: Very High

Tree: None

Grass: Low

Weed: Very High

Wind: 10 mph

Rain: 46%

Humidity: 86%

Sun

Sep 20

Overall: High

Tree: None

Grass: Low

Weed: High

Wind: 14 mph

Rain: 60% (may wash pollen out)

Humidity: 78%

Mon

Sep 21

Overall: High

Tree: None

Grass: Low

Weed: High

Wind: 11 mph

Rain: 60% (may wash pollen out)

Humidity: 80%

Tue

Sep 22

Overall: Very High

Tree: None

Grass: Low

Weed: Very High

Wind: 15 mph (may spread pollen)

Rain: 11%

Humidity: 75%

Wed

Sep 23

Overall: High

Tree: None

Grass: Low

Weed: High

Wind: 20 mph (may spread pollen)

Rain: 65% (may wash pollen out)

Humidity: 71%

Rain is likely Sunday (60% chance). The hour or two right after it stops is usually the cleanest air of the day. Plan around Monday though. Pollen often climbs the day after rain, when plants use the moisture to release a fresh burst.

Winds could reach 20 mph Wednesday. Gusts carry pollen miles from the plant that released it, so a windy day can feel worse than the count suggests.

Tree Pollen in Eureka Today

Tree pollen in Eureka 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 Eureka Today

Grass pollen in Eureka is Low today, reaching 10.11 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

Grass10.11 grains/m³

Weed Pollen in Eureka Today

Weed pollen in Eureka is Very High today, reaching 219.13 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

Ragweed219.13 grains/m³

Mugwort0 grains/m³

Air Quality in Eureka Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

2 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

2 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

73 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

0.9 µg/m³

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

Sulfur Dioxide (SO2)Good

0.1 µg/m³

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

Carbon Monoxide (CO)Good

119 µg/m³

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

See the full Eureka air quality report →

Weather in Eureka Today

🌧️

Weather

60°F

Patchy rain nearby

Humidity

76%

Wind

9 mph ENE

Feels Like

55°F

Pressure

1016 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Weed pollen is running Very High in Eureka today. 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 South Dakota →

Get free daily pollen alerts

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Allergy Guides and Resources

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

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