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Pollen counts reach highest levels of year across South Carolina

Photo of landscape in Columbia, S.C.
Columbia College
Photo of landscape in Columbia, S.C.

Warm and occasionally windy conditions are helping to increase pollen production, with extremely high levels now being reported across much of the state.

According to observation sites, pollen counts are reaching some of their highest levels of the year, with elm, juniper and pine among the primary culprits.

Vegetation releases particles into the air as part of its reproductive cycle to help fertilize other plants, but the process leads to millions suffering from allergies.

Pine trees are largely responsible for the yellow coating that often blankets vehicles, outdoor furniture and virtually all other surfaces exposed to the elements.

Longer growing season, longer allergy season in Columbia since 1970.
Climate Central
Longer growing season, longer allergy season in Columbia since 1970.

According to the Centers for Disease Control and Prevention, dry soils and a lack of rainfall can make pollen and other airborne particulates more concentrated over a particular area.

Without significant precipitation to wash allergens out of the atmosphere, the particles can remain suspended in the air for longer periods.

The Asthma and Allergy Foundation of America estimates that at least 100 million Americans experience some type of allergy, with spring and early summer representing the most challenging times of the year.

Health experts say there are simple steps people can take to limit exposure during peak pollen periods.

Peak pollen hours typically occur from roughly 10 a.m. to 4 p.m., and those with severe allergies are advised to reduce prolonged outdoor activities when possible.

If outdoor activities cannot be avoided, wearing protective gear such as sunglasses, masks and hats can help minimize symptoms.

Showering after spending time outside and immediately changing clothes are also recommended to reduce the amount of pollen brought indoors.

Running a home’s air-conditioning system with a clean filter can also help improve indoor air quality.

While spring often leads to peak pollen activity, allergens are common year-round, with grasses and weeds becoming the dominant sources over the summer.

According to NOAA, no federal agency produces a pollen forecasting system, with local organizations and health groups instead releasing data related to the allergens.

Map of the longer growing season across the country.
Climate Central
Map of the longer growing season across the country.