SC pollen report
Charleston Pollen Report
Charleston's Lowcountry beauty comes with a price: live oaks, palmettos, and marshland humidity drive one of the longest allergy calendars in the Southeast. Oak and pine bury the city each spring, grasses run through the long summer, ragweed fills the fall, and the marsh air keeps mold spores active for most of the year.
Collection coming soon to Charleston
PollyMap is actively recruiting a verified local partner in Charleston. Be the first to know — or apply to be the partner.
While we find a local clinic
Test the air at your own home in Charleston
No allergy clinic is reporting from Charleston yet. Until one does, you can order your own PollyKit — a simple air sampler you hang outdoors or indoors. Send it back and the PollyKit Lab shows you exactly what's floating in your air.
- Pollen from local trees, grasses and weeds
- Airborne mold spores
- Dust mites and other indoor allergens
Hang it outdoors
See which pollen and mold are in your yard this season.
Or hang it indoors
Check bedrooms and living spaces for mold, dust mites and more.
What drives allergies in Charleston
Trees: live oak, pine, and cedar (January – May)
Live oak (Quercus virginiana) is the Lowcountry's signature spring allergen; pine and red cedar contribute from late winter.
Grasses: Bermuda and Bahia (March – November)
Warm-season grasses pollinate through the long coastal growing season.
Weeds: ragweed (August – November)
Ragweed (Ambrosia) fills disturbed soils and marsh edges, with counts elevated until a late first frost.
Mold: marsh and ocean humidity
Lowcountry humidity keeps Alternaria and Cladosporium active most of the year, with spikes after tropical systems.
Pollen patterns in Charleston
In Charleston, tree pollen — including Oak, Pine, Cedar — typically dominates from late winter through spring. Bermuda grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Top trees
- Oak
- Pine
- Cedar
- Pecan
- Sweetgum
Top grasses
- Bermuda
- Bahia
- Rye
Top weeds
- Ragweed
- Pigweed
- Plantain
Top molds
- Cladosporium
- Alternaria
- Aspergillus
- Stachybotrys
Charleston pollen calendar
Typical monthly intensity across the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tree | ||||||||||||
| grass | ||||||||||||
| weed | ||||||||||||
| mold |
Historical reports
Cities near Charleston
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Charleston today?
PollyMap publishes real, microscope-verified pollen counts for Charleston — measured from physical air samples. The latest report on this page shows current tree, grass, weed, and mold levels.
Is the pollen count high in Charleston right now?
Charleston's worst stretches are March–April (oak, pine), June (grasses), and September–October (ragweed). The measured reports on this page show today's actual levels.
When is allergy season in Charleston?
January through November: trees in late winter and spring, grasses through the long summer, ragweed in the fall, and mold nearly year-round.
Do Charleston's famous live oaks cause allergies?
Yes — live oak is one of the heaviest spring pollinators in the Lowcountry, and the city's canopy is full of them.
Is pollen still bad in Charleston in the fall?
Yes. Charleston's ragweed season peaks in October, and the mild, humid Lowcountry climate keeps mold active in fall leaf litter. The coast's long frost-free season can stretch weed pollen into November.
Are you an allergy clinic in Charleston? Claim your territory on PollyMap.
PollyMap is a local authority-building tool for allergy clinics, ENT practices, and any clinic that offers allergy care. By becoming the Official PollyMap Partner for your part of Charleston, your clinic gets credited on real pollen reports, receives ready-to-share weekly content, and becomes the go-to local expert patients trust.
We assign each partner a designated territory within the Charleston metro — like a franchise territory. Charleston has room for multiple partners, but once your area is assigned, it's locked to your clinic.
No clinic has claimed a territory in Charleston yet. The best areas go to the first clinics that sign up — once one does, that part of town is off the table for everyone else.
Charleston, Mount Pleasant, Summerville, and West Ashley each make PollyMap territories. The first allergy clinic in each area becomes its credited pollen expert.
- Your clinic credited on every Charleston pollen report
- Weekly real-sample reports and ready-to-share content under your brand
- Locked territory — competing clinics can't claim your area
- Become the go-to allergy expert in your part of Charleston
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