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*Disclaimer: HeyAllergy® provides all clinical services furnished to patients in California, Florida, Texas, Illinois, Nevada, Pennsylvania. In New York, clinical services are furnished by Hey Allergy Medicine.
Real-time pollen data for Miami — updated daily. Powered by board-certified allergists.
South Florida's tree pollen season starts earlier than almost anywhere else in the country. Oak is Miami's most prolific tree allergen, with live oak and laurel oak releasing massive pollen loads from February through April. Australian pine (Casuarina) is a uniquely South Florida trigger that pollinates in fall and again in spring. Bald cypress and juniper produce winter pollen from December through February. Brazilian pepper — an invasive species that dominates disturbed land throughout Miami-Dade County — blooms from September through November, producing pollen that many newcomers to South Florida have never encountered.
What makes Miami different: Research from Miami Children's Hospital found that South Florida's overall pollen counts are surprisingly low compared to other regions, but the year-round nature of exposure means cumulative sensitization can be significant for long-term residents.
Bahia grass is Miami's dominant grass allergen, thriving in South Florida's subtropical warmth and found in lawns, parks, and roadsides throughout Miami-Dade and Broward counties. Bermuda grass is the second most common grass trigger, particularly in maintained landscapes and golf courses. Johnson grass and ryegrass also contribute to the pollen load. Miami's climate allows grass pollen to be detected nearly year-round, with highest concentrations from late spring through early fall.
St. Augustine grass — the most popular residential lawn grass in South Florida — releases minimal pollen but harbors mold spores in its thick turf, particularly after mowing.
Ragweed is Miami's most significant weed allergen, peaking from September through November. Dog fennel, nettle, pigweed, and lamb's quarters also contribute during fall months. South Florida's extended growing season pushes weed pollen later into the year than in most of the country — ragweed can remain active into December.
Easterly trade winds are an important factor: research has shown that pollen and mold counts in South Florida correlate with winds from the west, meaning allergens originate primarily from inland areas rather than the coast.
Mold may be the most clinically important outdoor allergen in South Florida. Studies have found that mold spore counts in Miami correlate with emergency room visits for asthma more strongly than pollen counts do. Alternaria, Aspergillus, Cladosporium, and Penicillium are commonly found both indoors and outdoors. Miami's warm, humid conditions — often exceeding 80% relative humidity — allow mold to grow year-round on exterior surfaces, in air conditioning systems, and inside homes with poor ventilation.
Dust mites are equally persistent. Miami's humidity never drops low enough to suppress dust mite populations, making them one of the most common perennial triggers for local residents. Pet dander from cats and dogs compounds the problem for the estimated 30% of allergy sufferers who are sensitized.
Miami has no true allergy "off season." While the rest of the country experiences winter relief, South Florida's mild temperatures allow bald cypress and juniper trees to begin pollinating in December. By February, oak pollen begins its annual surge. Snowbird visitors who relocate to South Florida for winter may develop new-onset allergy symptoms from exposure to unfamiliar subtropical allergens. Indoor allergens — dust mites and mold — remain active throughout winter.
Top allergens: Bald cypress, juniper, dust mites, mold
Severity: Low to moderate (outdoor), moderate (indoor)
Tip: If you moved to Miami and developed new symptoms, don't assume it's a cold — subtropical allergens like Australian pine and Brazilian pepper may be triggering reactions you've never experienced before.
This is Miami's most challenging period. Oak pollen reaches its annual peak in March and April, creating visible yellow-green coating on cars and outdoor surfaces. Grass pollen from Bahia and Bermuda grass begins overlapping by April. Rising humidity drives mold spore counts higher. The combination of tree pollen, early grass pollen, and mold makes spring the most miserable season for Miami allergy sufferers.
Top allergens: Oak, Bahia grass, Bermuda grass, mold
Severity: High to very high
Tip: Spring is the best time to start sublingual immunotherapy. Getting ahead of symptoms now means fewer flare-ups during summer and fall.
Grass pollen reaches peak levels as Bahia and Bermuda grass thrive in summer heat. Daily afternoon thunderstorms are a double-edged sword: rain washes pollen from the air temporarily but creates ideal conditions for explosive mold growth. Post-storm humidity spikes can push indoor mold levels to their highest point of the year. Air conditioning units run constantly, and dirty filters or neglected drip pans become mold breeding grounds.
Top allergens: Bahia grass, Bermuda grass, mold spores, dust mites
Severity: Moderate (pollen), high (mold and indoor allergens)
Tip: Have your AC system serviced before summer. Clean or replace filters monthly during the rainy season. Use a dehumidifier to keep indoor humidity below 50%.
Fall is Miami's second worst allergy season. Ragweed pollen peaks in September and October, overlapping with Brazilian pepper bloom. This period also falls during peak hurricane season — any tropical flooding event can trigger severe indoor mold blooms that persist for weeks or months. Even without hurricanes, the transition from rainy to dry season creates conditions where mold spore counts remain elevated while weed pollen adds to the allergen load.
Top allergens: Ragweed, Brazilian pepper, mold spores
Severity: Moderate to high (very high post-hurricane)
Tip: After any flooding or water intrusion from tropical storms, address moisture and mold immediately. Post-hurricane mold exposure is a serious respiratory health risk — don't wait for visible growth to act.
While most people focus on pollen counts, research from South Florida allergists shows that mold spores may be the most clinically significant outdoor allergen in the Miami area. Mold counts correlate more strongly with asthma ER visits than pollen counts do. If your symptoms persist even when pollen is low, mold is likely a major trigger. A blood allergy test from a board-certified allergist can identify whether you're sensitized to specific mold species like Alternaria, Aspergillus, or Cladosporium.
Miami's humidity regularly exceeds 80% — far above the 50% threshold where dust mites and mold flourish. Run a dehumidifier in bedrooms and main living areas year-round, not just during summer. Aim for 40–50% indoor humidity. Fix any plumbing leaks immediately — even small drips behind walls can spawn mold colonies within 48 hours in Miami's climate. Use exhaust fans during and after showers, and never let standing water accumulate in AC drip pans.
Research has shown that pollen and mold counts in South Florida are generally lower along the coast than inland. Easterly ocean breezes push airborne allergens westward, which is why coastal neighborhoods like Brickell, Edgewater, and South Beach tend to have lower pollen readings than inland areas like Kendall or Coral Gables. If you're choosing where to exercise outdoors, oceanside paths offer a measurable advantage over inland parks during peak pollen season.
Living in a hurricane zone means periodic flooding risk, and any water intrusion — from a Category 5 storm or a broken pipe — can trigger rapid mold growth in Miami's warm, humid conditions. After any water event, dry affected areas within 24–48 hours. Remove wet carpet, drywall, and insulation that can't be fully dried. If you smell musty odors or see discoloration on walls after a storm, don't ignore it — mold exposure is a serious respiratory hazard that can worsen allergies and asthma significantly.
Newcomers from northern states expect allergy season to start in spring. In Miami, tree pollen begins in December and there's no true winter break. Brazilian pepper — a tree species most northerners have never encountered — produces allergens from September through November. If you moved to South Florida and developed new symptoms you've never had before, don't assume it's just a cold that won't go away. You may be reacting to subtropical allergens your body has never been exposed to.
Antihistamines and nasal sprays provide temporary relief but don't address why your immune system is overreacting. HeyAllergy's board-certified allergists can identify your specific triggers through blood testing and create a personalized treatment plan with HeyPak® sublingual immunotherapy drops formulated for South Florida's unique allergen profile. Most patients notice improvement within 3–6 months. Book a telemedicine consultation from anywhere in Miami-Dade, Broward, or Palm Beach County — no clinic visit needed, no waitlist.
March through May is typically the worst period for allergies in Miami. Oak pollen peaks during these months and overlaps with early grass pollen. September through November is the second worst period due to ragweed and Brazilian pepper pollen. However, Miami has no truly allergy-free month — mold and dust mites are active year-round.
Yes. Miami's subtropical climate means there is no hard freeze to kill pollen-producing plants, and consistently high humidity sustains mold and dust mite populations in every month. Tree pollen starts in December, grass pollen runs April through October, weed pollen peaks August through December, and indoor allergens never subside.
New-onset allergies are extremely common among people who relocate to South Florida. Miami's subtropical vegetation — including Brazilian pepper, Australian pine, and melaleuca — produces allergens that most people from other regions have never been exposed to. Your immune system may develop new sensitivities after repeated exposure to these unfamiliar triggers. A board-certified allergist can identify your specific new triggers through blood testing.
Yes. HeyAllergy provides telemedicine appointments with board-certified allergists licensed in Florida. You can book a virtual consultation, have allergy blood tests ordered at a local lab, receive a diagnosis, and start treatment — all without visiting a clinic. No waitlist, and appointments are available quickly.
HeyAllergy's HeyPak® sublingual immunotherapy drops are customized based on your blood allergy test results and formulated with allergens specific to South Florida — including oak, Bahia grass, ragweed, Brazilian pepper, dust mites, and mold. You place drops under your tongue daily at home. Over 3–6 months, your immune system builds tolerance, reducing symptoms and medication dependence.
HeyAllergy accepts Medicare and most major PPO health plans, including United Healthcare, Anthem Blue Cross, Blue Shield, Cigna, Aetna, Humana, Oscar, and Tricare. Telemedicine benefits vary by plan — contact your insurance provider with HeyAllergy's Tax ID (85-0834175) to confirm your specific coverage.
For many Miami residents, yes. Research from South Florida allergists has found that mold spore counts correlate more strongly with asthma emergency room visits than pollen counts. Miami's consistently high humidity allows mold to grow year-round both indoors and outdoors, and post-hurricane flooding can trigger severe mold blooms. If your symptoms persist even when pollen counts are low, mold is likely a significant trigger.
HeyAllergy has no waitlist. You can book an online appointment at a time that works for you and see a board-certified allergist via secure video consultation — typically within days, not weeks. Available for residents throughout Miami-Dade, Broward, and Palm Beach counties.
Miami's subtropical climate creates one of the most complex allergy environments in the United States. Unlike most American cities where winter brings genuine relief, Miami's warm year-round temperatures mean pollen-producing plants never go fully dormant. The result is an allergy calendar with no true "off season" — just shifting combinations of tree, grass, and weed pollen layered on top of persistent mold and dust mite exposure.
South Florida's unique vegetation adds another layer of complexity. Brazilian pepper, Australian pine, and melaleuca are all common allergen-producing species that don't exist in most of the country. People who relocate to Miami from northern states frequently develop new-onset allergy symptoms within their first year of residence — reactions to subtropical triggers their immune systems have never encountered before.
While pollen gets the most attention, mold may be the most clinically important allergen in South Florida. Research conducted through Miami Children's Hospital found that mold spore counts correlate more strongly with emergency room visits for asthma than pollen counts do. This finding reflects the reality that many Miami residents live with — mold is everywhere, year-round, both indoors and outdoors.
Miami's average relative humidity frequently exceeds 80%, creating ideal conditions for mold growth on exterior walls, in bathrooms, in air conditioning systems, and behind walls where moisture can accumulate undetected. Homes with older construction, poor ventilation, or deferred maintenance are particularly vulnerable. Hurricane season adds another dimension: any flooding event — from a major storm or simply a broken pipe — can trigger rapid mold colonization that persists for months in Miami's warm, humid conditions.
For allergy sufferers, this means that even when outdoor pollen counts are low, indoor mold and dust mites can maintain chronic symptoms. Environmental control — dehumidifiers, HEPA filtration, prompt moisture remediation — isn't optional in Miami; it's essential to managing year-round allergy symptoms.
One of Miami's most distinctive allergy patterns is the development of new allergies in people who relocate from other regions. Someone who lived symptom-free in New York or Chicago for decades may develop significant allergy symptoms within 1–3 years of moving to South Florida. This happens because the immune system encounters unfamiliar allergens — Brazilian pepper, Australian pine, Bahia grass, tropical mold species — and can develop new sensitizations through repeated exposure.
This phenomenon catches many transplants off guard. They assume they "don't have allergies" because they never did before, leading them to ignore symptoms or attribute them to perpetual colds. A board-certified allergist can identify these new triggers through blood testing and create a treatment plan targeting the specific South Florida allergens causing the reactions.
Where you live within Miami can significantly impact your allergen exposure. Research has shown that pollen and mold counts in South Florida correlate with westerly wind patterns, meaning airborne allergens originate primarily from inland vegetation. Coastal neighborhoods — Brickell, South Beach, Key Biscayne, Edgewater — tend to have lower pollen concentrations because easterly ocean breezes push allergens inland.
Conversely, inland and suburban areas like Kendall, Coral Gables, and North Miami — with their abundant landscaping, tree canopy, and parks — tend to have higher pollen readings. Coral Gables' lush landscaping contributes to some of the highest tree pollen and mold readings in the metro area. Understanding this geographic variation can help allergy sufferers make informed decisions about where to exercise, live, and spend time outdoors.
Miami's traffic congestion makes getting to medical appointments a significant barrier to care. A round-trip commute to a specialist in Miami-Dade County can easily consume two hours, and traditional allergy clinics often have weeks-long wait times for new patients. For patients requiring allergy shots, the burden of weekly or biweekly clinic visits on top of Miami traffic makes long-term adherence difficult.
HeyAllergy eliminates these barriers entirely. Residents throughout Miami-Dade, Broward, and Palm Beach counties can see a board-certified allergist from home via secure video consultation. Comprehensive blood allergy tests can be ordered to a convenient lab location, and a personalized treatment plan — including prescriptions and HeyPak® sublingual immunotherapy drops — can begin without a single in-person visit.
HeyPak® is particularly well-suited for South Florida patients because the drops are customized based on your specific test results and the allergens endemic to the Miami region, including local tree, grass, weed, and mold triggers. They're mailed directly to your door, taken daily under the tongue, and monitored through follow-up telemedicine visits. No needles, no traffic, no waitlist.
If you moved to South Florida and developed new allergy symptoms you've never experienced before, if over-the-counter medications like Zyrtec or Claritin aren't providing adequate relief, if your symptoms are affecting your sleep or quality of life, if you experience recurring sinus infections, if you have both allergies and asthma, or if you're unsure what you're actually allergic to, it's time to see a board-certified allergist.
HeyAllergy accepts Medicare and most major PPO health plans, making expert allergy care accessible for residents throughout South Florida.
