Mild
Mild pollen — sensitive individuals may notice
Weed pollen is the main trigger · Tomorrow → · Updated 15 hours ago
Today in Port St Lucie: weed pollen is moderate, tree pollen is very low, grass pollen is low. Overall score: 34/100. Allergies are mild right now; sensitive people may notice symptoms. Tomorrow is expected to be about the same. Updated at 2:00 AM.
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Pollen levels in Port St Lucie are currently low. Most people should not experience allergy symptoms from pollen.
Tree pollen: Very Low. Grass pollen: Low. Weed pollen: Moderate.
Tomorrow's pollen forecast for Port St Lucie is expected to be about the same, with mild pollen conditions.
Weed pollen is the highest supported pollen type in Port St Lucie today. Weed pollen is moderate.
Tree pollen in Port St Lucie is very low today.
Grass pollen in Port St Lucie is low today.
Weed pollen in Port St Lucie is moderate today.
Tomorrow's pollen forecast for Port St Lucie is expected to be about the same, with mild pollen conditions.
Port St. Lucie sits along Florida's Treasure Coast, where a humid subtropical climate, mild winters, and abundant coastal vegetation create an unusually long and overlapping allergy season.
Tree pollen typically kicks off as early as January and peaks from February through April, driven by oak, cedar, juniper, pine, bayberry, and Australian pine, with live oak often producing the heaviest local loads and visible yellow-green pollen drifts.
As trees taper, grass pollen ramps up in late April and remains a persistent irritant through summer and into early fall, with Bahia, Bermuda, and St. Augustine grasses dominating lawns and pastures across St. Lucie County.
Weed pollen becomes the main concern from late summer into November, led by ragweed, pigweed, lamb's quarters, dog fennel, and sagebrush. Because Florida's growing season is nearly year-round, overlap between lingering grasses and emerging weeds in late summer frequently intensifies symptoms.
Non-pollen triggers are equally significant: high year-round humidity fuels outdoor mold spores (especially Cladosporium and Alternaria), dust mites thrive indoors, and proximity to the Atlantic and inland wetlands keeps airborne mold counts elevated after rain.
Overall, Port St. Lucie's allergy profile is defined by extended seasons, strong grass and mold pressure, and minimal true off-season relief.