Upstate Pollen Levels Surge as Spring Allergy Season Peaks

March 25, 2026

If your car, porch, and patio furniture are covered in a fine yellow dust, you’re seeing one of the clearest signs of spring in the Upstate—pollen season is here, and it’s hitting hard.

March is typically the peak of tree pollen season in South Carolina, and this year is no exception. Pine, oak, and birch trees are releasing large amounts of pollen, driven by a stretch of warm temperatures, dry air, and breezy conditions that help it spread quickly across the region.

For many Upstate residents, that means a tough few weeks of allergy symptoms, including sneezing, itchy and watery eyes, congestion, and sinus pressure. Even those who don’t typically struggle with seasonal allergies may be feeling the effects right now.

Recent weather patterns have only added to the intensity. While occasional rain can briefly wash pollen away, levels tend to rebound quickly—often within a day—as conditions dry out. Add in gusty winds, and pollen stays circulating in the air longer.

Looking ahead, high tree pollen levels are expected to continue through April. After that, grass pollen will begin to rise, extending allergy season well into late spring.

To help manage symptoms:

  • Keep windows and doors closed during peak pollen times
  • Shower and change clothes after being outdoors
  • Wipe down outdoor surfaces and vehicles regularly
  • Use air filters and consider over-the-counter allergy relief

For now, that yellow haze across the Upstate is a reminder that while spring brings warmer days and blooming landscapes, it also brings one of the region’s most challenging allergy seasons.

Cover image – from Allergic, Disease & Asthma Center, PA website- you can check their website for daily pollen levels