Dr. Rob Schleiffarth
West River ENT
South Dakota Pollen Count Today
Check today's pollen count by city in South Dakota. Explore local allergy forecasts, monitor common seasonal allergens, and use city-level trends to plan around high pollen days.
Allergy Ava organizes statewide and local pollen information so you can compare conditions, anticipate seasonal flare-ups, and find relevant allergy forecast pages faster.
Today's pollen count in South Dakota
Pollen levels in South Dakota can vary by city, weather, vegetation, and season. Choose a local forecast below to see the current allergy index, main allergen, and 5-day outlook for cities including Sioux Falls, Rapid City, Aberdeen, Brookings, Watertown, Mitchell.
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Local allergy care
Allergists near South Dakota
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.
Dr. Robert Stelzle
Allergy & Asthma of the Black Hills
About Pollen in South Dakota
South Dakota allergy sufferers can use this page to monitor pollen trends and find relevant city forecasts when available. Pollen levels vary by season, with tree pollen often peaking in spring, grass pollen becoming more active in late spring and summer, and weed pollen, especially ragweed, remaining a concern in late summer and fall.
Use Allergy Ava's city-level forecasts to plan outdoor activities, manage medication timing, and stay informed about the allergens most prevalent in your area. Our data is updated regularly to give you the most accurate picture of current conditions.
Frequently asked questions about South Dakota pollen forecasts
Why can Rapid City allergies differ from Sioux Falls or Brookings?
Rapid City is more Black Hills and foothill influenced, with drier air, pine, juniper, grassland, sagebrush, dust, and stronger terrain-driven wind. Sioux Falls and Brookings are more eastern prairie, lawn, field-edge, and shelterbelt influenced.
When do fall allergies usually start in South Dakota?
Weed season often becomes noticeable from late July into August and can last until a hard freeze. Ragweed is the biggest late-season driver, but kochia, Russian thistle, pigweed, lamb’s quarters, and sagebrush can also matter.
Why do South Dakota pollen days feel worse when it is windy?
Much of the state is open and wind-exposed, so pollen, grass fragments, dry weeds, dust, and plant debris can move long distances. A moderate count can feel more irritating when gusts keep particles airborne.
Are showy flowers the main cause of South Dakota hay fever?
Usually, no. Colorful or fragrant flowers are often insect-pollinated and do not spread as much airborne pollen. Wind-pollinated grasses, ragweed, oaks, mulberries, ash, and other trees are more likely to drive respiratory symptoms.