Real-time pollen data for Savannah — updated daily.
Unlike inland Georgia cities where mold follows clear seasonal peaks, Savannah sustains high fungal spore loads across all twelve months. Tidal salt marsh saturation, a high water table, near-sea-level elevation, and subtropical humidity keep Alternaria and Cladosporium continuously active. Aspergillus and Penicillium are common indoors. Decomposing live oak litter, marsh organic matter, and moisture-holding Spanish moss feed the system constantly. This is the single most important allergen consideration in Savannah.
Live oak is Savannah's signature tree and a significant wind-pollinated allergen. Unusually, this evergreen oak sheds its leaves in spring rather than autumn, so heavy pollen release and leaf drop occur together — and the fallen litter then decomposes in warm humid conditions to feed mold. Water oak, willow oak, and laurel oak contribute additional coastal oak pollen.
A bromeliad epiphyte, not a moss or parasite, producing negligible airborne pollen of its own. Its significance is as a passive reservoir: the fine tangled structure traps pollen from surrounding trees and grasses, and its moisture-absorbing tissue supports fungal growth in humid coastal air. Distributed across an entire urban canopy, this concentrates and prolongs exposure to allergens originating elsewhere. Direct skin contact can cause dermatitis.
Coastal-specific fall allergens largely absent inland. Marsh elder is a shrubby aster-family relative of ragweed growing along the upper tidal marsh edge, wind-pollinated and blooming alongside ragweed with similar symptoms. Groundsel bush, also called sea myrtle, occupies the same zone. Together they meaningfully extend and intensify Savannah's fall allergy season beyond ragweed alone.
Loblolly and slash pine are abundant across coastal Georgia, producing the visible spring yellow film. Grains are large and less efficient at reaching deep airways than oak, but volume makes pine a meaningful irritant. Red cedar contributes winter pollen.
Savannah's near frost-free season produces the state's longest grass pollen window. Bermuda dominates lawns and parks; Bahia is widespread on roadsides and unmaintained ground, producing pollen on tall seed stalks. Smooth cordgrass fills the tidal marsh. Johnson grass and ryegrass contribute.
Ragweed remains a dominant fall allergen, compounded here by marsh elder blooming in the same window. Goldenrod blooms conspicuously alongside but is insect-pollinated and not a significant airborne source. Pigweed, lamb's quarters, and plantain contribute.
Wax myrtle, yaupon holly, cabbage palmetto, and saw palmetto are characteristic coastal species. Palms produce modest airborne pollen. Sweetgum and river birch occur in wetter bottomland areas.
The Port of Savannah generates substantial truck, rail, and vessel diesel emissions concentrated along the river and feeding corridors, including I-16 and I-95. Diesel particulate and PM2.5 inflame airway linings and amplify reactions to Savannah's abundant pollen and mold.
Dust mites reach among the highest concentrations in Georgia given sustained coastal humidity. Indoor mold risk is elevated in historic housing with crawl spaces and older building envelopes. Cockroach allergens are common. Pet dander is significant.
Severity: Moderate. Savannah has the least complete winter lull in Georgia. Tree and grass pollen drop to seasonal lows, but mold does not — tidal marsh saturation and coastal humidity keep Alternaria and Cladosporium active through winter. Red cedar produces pollen. Indoor dust mites peak with closed-window conditions and sustained humidity. This is the window to establish preventive treatment before live oak opens.
Severity: High. Live oak begins pollinating and simultaneously sheds its leaves — the reverse of deciduous trees inland. Pine begins producing. Water oak, laurel oak, and red cedar contribute. Fallen live oak litter starts decomposing in warm humid conditions, adding to the mold load. Spanish moss in the canopy begins trapping the season's first pollen.
Severity: Severe. Live oak and pine peak together. Sweetgum, wax myrtle, and coastal shrubs add pollen. The visible pine film coats surfaces. Grass begins on Bermuda and Bahia turf. Spanish moss holds trapped pollen aloft across the canopy, extending exposure beyond peak release days. Mold remains elevated throughout.
Severity: High. Bermuda and Bahia grass dominate. Smooth cordgrass fills the marsh. Coastal heat and humidity build sharply. Mold climbs further as marsh saturation and afternoon thunderstorms combine. Dust mites reach high indoor concentrations. Hurricane season opens June 1, bringing flooding and rapid post-storm mold risk.
Severity: Severe. Savannah's hardest fall stretch. Ragweed peaks alongside marsh elder and groundsel bush from the tidal marsh edge — a coastal combination inland Georgia does not face. Grass continues on the state's longest warm season. Alternaria reaches its annual high. Peak hurricane risk runs August through October, with flooding capable of triggering rapid indoor mold colonization within 24 to 48 hours.
Severity: Moderate to High. Ragweed and marsh elder decline through late October, extended by warm autumns. Grass finally tapers, later than anywhere else in Georgia. Live oak and marsh litter continue decomposing, sustaining Cladosporium and Aspergillus. Mold does not follow pollen downward — it carries straight through into winter.
Savannah's live oaks are draped in Spanish moss, and it gets blamed for a great deal. The truth is more interesting than either "it's harmless" or "it's the cause." Spanish moss is not a moss and not a parasite — it is a bromeliad epiphyte, related to pineapple, that takes moisture and nutrients from the air. It produces almost no meaningful airborne pollen of its own. What it does is act as a reservoir. Its fine, tangled structure traps pollen from surrounding trees and grasses, and because it absorbs and holds atmospheric moisture, it stays damp in Savannah's humid coastal air and supports fungal growth. Draped across an entire urban canopy, that is an enormous distributed surface area of pollen-catching, moisture-holding material. Handling it directly can also cause contact dermatitis. So it is not the origin of your symptoms, but it does concentrate and prolong exposure to allergens that come from elsewhere.
Savannah's signature tree behaves differently from the deciduous oaks inland. Live oak is evergreen, and rather than dropping its leaves in autumn it sheds them in spring — at the same time it releases pollen. The practical result is a compressed spring window where residents face heavy oak pollen and simultaneous leaf drop, with the fallen litter then decomposing in warm, humid conditions to feed mold. If you have wondered why Savannah springs feel like they involve both sneezing and constant sweeping, that overlap is why. Live oak is fully wind-pollinated and genuinely allergenic, unlike the Spanish moss hanging in it.
Salt marsh surrounds Savannah, and it produces an allergen most inland Georgians never encounter. Marsh elder is a shrubby member of the aster family — the same family as ragweed — growing along the upper edges of tidal marsh. It is wind-pollinated and blooms in late summer and fall, overlapping ragweed season and producing similar symptoms. Groundsel bush, also called sea myrtle, grows in the same zone. If you moved to Savannah from inland Georgia and your autumn symptoms are worse than they used to be despite similar ragweed exposure, coastal marsh species are the likely addition. Blood testing can distinguish marsh elder sensitivity from ragweed.
Savannah has the heaviest sustained mold burden of any city in Georgia. Tidal salt marsh, near-sea-level elevation, subtropical humidity, and a near frost-free growing season combine so that Alternaria and Cladosporium never really go dormant. This is fundamentally different from inland cities where mold has clear seasonal peaks and troughs. Practically, it means dehumidification should run year-round rather than seasonally, HVAC filtration should be maintained continuously, and indoor humidity should be held below 50 percent in every month — not just summer.
Savannah sits at low elevation on a tidal river with barrier islands offshore. King tides, tropical storms, and hurricanes all produce flooding, and the region's high water table means water drains slowly. In subtropical warmth, mold colonizes wet building materials within 24 to 48 hours — far faster than in cooler climates. After any flooding or water intrusion, remediation needs to begin immediately rather than waiting for the next dry stretch. For anyone with existing asthma or mold sensitivity, this timeline matters more here than almost anywhere else in the state.
The Port of Savannah is among the busiest container ports in North America, generating substantial truck, rail, and vessel diesel emissions concentrated along the river and the corridors feeding it. Diesel particulate does not cause allergies but inflames airway linings and amplifies reactions to pollen and mold already present. Savannah's daily sea breeze cycle also matters: onshore afternoon flow can push marine air and marsh-derived spores inland, while calm mornings allow pollen to settle and concentrate at breathing height. Timing outdoor exercise for late morning often avoids both extremes.
Not directly, but it contributes. Spanish moss is a bromeliad epiphyte, not a moss or parasite, and produces almost no airborne pollen of its own. However, its fine tangled structure traps pollen from surrounding trees and grasses, and its moisture-absorbing tissue supports mold growth in humid coastal air. Spread across an entire canopy, it concentrates and prolongs exposure to allergens that originate elsewhere. Handling it directly can also cause contact dermatitis.
February through April brings peak live oak and pine pollen. Grass runs April into October, the longest window in Georgia. August through October brings ragweed plus marsh elder and groundsel bush from the tidal marsh. Mold is elevated in all twelve months rather than seasonally — which makes Savannah's calendar the most continuous in the state.
Near-sea-level elevation, a high water table, twice-daily tidal marsh saturation, subtropical humidity, and a nearly frost-free growing season combine to keep Alternaria and Cladosporium active year-round instead of following the seasonal peaks seen inland. Decomposing live oak litter, marsh organic matter, and moisture-holding Spanish moss feed the system continuously. Savannah carries the heaviest sustained mold burden of any Georgia city.
Marsh elder is a shrubby member of the aster family — the same family as ragweed — that grows along the upper edges of tidal salt marsh. It is wind-pollinated and blooms in late summer and fall, overlapping ragweed season with similar symptoms. Because it requires salt marsh habitat, inland Georgians rarely encounter it. If your fall symptoms worsened after moving to the coast, marsh elder is a likely addition.
The allergen profile is genuinely different. Inland cities are dominated by seasonal tree and grass pollen with clear mold peaks and troughs. Savannah adds year-round mold, evergreen live oak that pollinates while shedding leaves, coastal marsh species like marsh elder, Spanish moss acting as a pollen and moisture reservoir, and the longest grass season in the state. Blood testing identifies which coastal allergens you have become sensitized to.
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HeyPak® sublingual immunotherapy drops are customized based on allergy blood test results. For Savannah residents, this targets local live oak, pine, Bermuda and Bahia grass, ragweed, marsh elder, Alternaria, Cladosporium, and dust mite allergens specific to coastal Georgia. Daily drops placed under the tongue retrain your immune system rather than just suppressing symptoms, with improvement typically seen in 3–6 months. Treatment is recommended for 3–5 years for lasting relief. Starting at $47/month.
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Savannah is a city of approximately 149,000 in Chatham County, sitting near sea level on the Savannah River about eighteen miles inland from the Atlantic. Founded in 1733 as Georgia's first city under James Oglethorpe's grid-and-squares plan, Savannah anchors the state's coast and holds one of the largest National Historic Landmark Districts in the United States. There is a neat symmetry to Georgia's geography here: Augusta sits at the head of navigation on the Savannah River where it crosses the Fall Line, and Savannah sits at its mouth. Same river, opposite ends, and two allergen environments with almost nothing in common — Savannah's is defined not by Piedmont geology or pine plantations but by tidal salt marsh, evergreen live oak canopy, and humidity that never fully relents.
Savannah is embedded in one of the largest expanses of tidal salt marsh on the Atlantic coast. Smooth cordgrass dominates the regularly flooded low marsh, while the upper marsh edge supports a distinctive shrub community including marsh elder and groundsel bush. Marsh elder is a member of the aster family, closely related to ragweed, wind-pollinated, and blooming in late summer and fall — a genuine coastal allergen that inland Georgians rarely encounter. The marsh also functions as an enormous, permanently moist organic system, generating fungal spores continuously rather than seasonally. Twice-daily tidal exchange keeps this system saturated year-round.
Savannah's twenty-two squares and residential streets are canopied by live oak, an evergreen species that sheds its leaves in spring rather than fall — simultaneously with pollen release. Live oak is wind-pollinated and significantly allergenic. Draped through that canopy is Spanish moss, a bromeliad epiphyte rather than a true moss or parasite, which absorbs moisture and nutrients directly from the air. Spanish moss produces negligible airborne pollen itself, but its fine tangled structure traps pollen from surrounding vegetation and its moisture-holding tissue supports fungal growth in the humid coastal air. Across a full urban canopy this creates a vast distributed reservoir that concentrates and prolongs exposure to allergens originating elsewhere. Direct handling can also cause contact dermatitis.
No Georgia city carries a mold load comparable to Savannah's. Near-sea-level elevation, a high water table, tidal marsh saturation, subtropical humidity, and a growing season that is nearly frost-free combine so that Alternaria and Cladosporium remain active essentially year-round rather than following the clear seasonal peaks seen inland. Aspergillus and Penicillium are common indoors. Decomposing live oak leaf litter, marsh organic matter, and moisture-laden Spanish moss all feed this continuously. For patients with mold sensitivity or mold-triggered asthma, Savannah presents a management problem that does not pause.
Beyond live oak and marsh species, coastal Georgia supports cabbage palmetto, saw palmetto, wax myrtle, yaupon holly, red cedar, sweetgum, and extensive loblolly and slash pine. Savannah's frost-free season is the longest in Georgia, producing the state's most extended allergen calendar: tree pollen opening in February, grass on Bermuda and Bahia turf running from spring deep into autumn, marsh elder and ragweed through fall, and mold across all twelve months. The winter lull that inland cities rely on is briefer here and less complete.
Low elevation, a tidal river, and barrier islands offshore leave Savannah exposed to king tides, tropical storms, and hurricanes. The high water table means floodwater drains slowly, and subtropical warmth accelerates fungal colonization of wet building materials to within roughly 24 to 48 hours — substantially faster than in cooler climates. Savannah's historic housing stock, much of it raised on piers or masonry foundations in response to exactly this flooding history, adds crawl spaces and older building envelopes that hold moisture in ways modern slab construction does not.
The Port of Savannah is among the busiest container ports in North America, and its Garden City Terminal drives constant truck, rail, and vessel movement through the region. The resulting diesel particulate and fine particulate matter concentrate along the river and the highway and rail corridors serving it. These emissions do not cause allergies, but they inflame airway linings and measurably amplify responses to the pollen and mold already abundant in coastal air — a compounding factor for residents in port-adjacent and corridor neighborhoods.
Savannah's year-round rather than seasonal mold burden driven by tidal salt marsh and subtropical humidity, Spanish moss functioning as a canopy-wide reservoir that traps pollen and holds fungal moisture, live oak releasing pollen simultaneously with spring leaf drop, marsh elder and groundsel bush adding coastal fall allergens absent inland, rapid post-flood mold colonization in a low-lying tidal city, and port diesel particulate amplifying every biological trigger create an allergy environment unlike anywhere else in Georgia. HeyAllergy connects Savannah residents with board-certified allergists through telemedicine. Patients receive allergy blood testing, personalized treatment, and HeyPak® sublingual immunotherapy drops custom-formulated for coastal Georgia allergens. Treatment starts at $47/month. No needles, no clinic visits, no waitlist.