Winston-Salem, NC Pollen Levels Today

Winston-Salem sits in the Piedmont region of North Carolina, where a humid subtropical climate, mild winters, and a long growing season combine to produce one of the more challenging allergy environments in the Southeast.

Tree pollen typically opens the season in late February and peaks from March through April, driven by oak, pine, cedar, birch, maple, hickory, sweetgum, and sycamore—with the region's notorious yellow pine dust coating cars and outdoor surfaces during peak weeks.

As tree counts taper in May, grass pollen takes over and remains elevated through July, with Bermuda, Kentucky bluegrass, orchard, fescue, and timothy grasses among the dominant triggers.

Late summer into fall brings weed pollen, led by ragweed from mid-August through the first hard frost in October or early November, alongside pigweed, lamb's quarters, plantain, and nettle.

The overlap between tree and grass seasons in May, and between grass and weed pollens in August, often intensifies symptoms for multi-sensitive individuals.

Beyond pollen, the area's persistent humidity supports high outdoor and indoor mold counts—especially Alternaria and Cladosporium—while dust mites thrive year-round, and summertime ozone and vehicle pollution can worsen reactions.

Overall, Winston-Salem's allergy profile is marked by a long, overlapping pollen calendar compounded by significant mold pressure.