Sioux Falls, SD Pollen Count Today

Live pollen forecast and air quality for Sioux Falls, South Dakota

šŸ“ Sioux Falls, SDToday Ā· Sep 20
8/10
Breathabilityā„¢ Score
Excellent breathing conditions for most plans today.
šŸŒ³Tree Pollen
None
šŸŒ±Grass Pollen
Low
šŸŒæWeed Pollen
Moderate
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Today's Pollen Levels in Sioux Falls

Weed pollen is slightly elevated at Moderate levels in Sioux Falls. 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 Sioux Falls peaks Tuesday at Moderate, driven by weed pollen.

Today
Sep 20
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 15 mph (may spread pollen)
Rain: 91% (may wash pollen out)
Humidity: 89%
Mon
Sep 21
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 13 mph
Rain: 93% (may wash pollen out)
Humidity: 96%
Tue
Sep 22
Overall: Moderate
Tree: None
Grass: Low
Weed: Moderate
Wind: 12 mph
Rain: 44%
Humidity: 88%
Wed
Sep 23
Overall: Moderate
Tree: None
Grass: Low
Weed: Moderate
Wind: 17 mph (may spread pollen)
Rain: 69% (may wash pollen out)
Humidity: 82%
Thu
Sep 24
Overall: Low
Tree: None
Grass: Low
Weed: Low
Wind: 15 mph (may spread pollen)
Rain: 93% (may wash pollen out)
Humidity: 93%

Rain is likely Monday (93% chance). The hour or two right after it stops is usually the cleanest air of the day. Plan around Tuesday though. Pollen often climbs the day after rain, when plants use the moisture to release a fresh burst.

Tree Pollen in Sioux Falls Today

Tree pollen in Sioux Falls 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 Sioux Falls Today

Grass pollen in Sioux Falls is Low today, reaching 0.82 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

Grass0.82 grains/mĀ³

Weed Pollen in Sioux Falls Today

Weed pollen in Sioux Falls is Moderate today, reaching 27.52 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

Ragweed27.52 grains/mĀ³
Mugwort0 grains/mĀ³

Air Quality in Sioux Falls Today

šŸŒ¬ļø
Air Quality
Good
Good

Air Pollutant Breakdown

PM2.5Good
2 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
2 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
80 Āµg/mĀ³
Elevated levels irritate airways and can worsen asthma symptoms.
Nitrogen Dioxide (NO2)Good
1.5 Āµg/mĀ³
A respiratory irritant from vehicle exhaust that can trigger inflammation in sensitive airways.
Sulfur Dioxide (SO2)Good
0.4 Āµg/mĀ³
Even brief exposure can tighten airways, especially for people with asthma.
Carbon Monoxide (CO)Good
126 Āµg/mĀ³
High levels reduce oxygen delivery in the body, compounding breathing difficulty on high-pollen days.
See the full Sioux Falls air quality report ā†’

Weather in Sioux Falls Today

šŸŒ§ļø
Weather
56Ā°F
Light rain shower
Humidity
94%
Wind
7 mph E
Feels Like
53Ā°F
Pressure
1018 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Pollen shifts week to week in Sioux Falls. 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 ā†’

Get free daily pollen alerts

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

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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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