Fall Allergy Triggers in South Florida: What You Need to Know

Why Are Allergies Still Bad in Fall?

In many parts of the country, cooler temperatures in fall help kill off pollen and mold spores. But in South Florida, the subtropical climate means warm temperatures and high humidity often persist well into November (or later). That means pollen, mold, and dust mites continue to thrive—sometimes even more so than in summer.

Top Fall Allergy Triggers in South Florida

1. Mold Spores

Fall is peak mold season in Florida. Damp leaves, high humidity, and frequent rain create a perfect breeding ground for outdoor and indoor mold.

• Where it's found: Rotting vegetation, mulch, damp areas in your home (bathrooms, kitchens, A/C units).
• Symptoms: Nasal congestion, sneezing, coughing, watery eyes, wheezing.

2. Ragweed Pollen

Ragweed is a major fall allergen across the U.S., including Florida—though it’s not as dense as up north, it’s still present, especially in rural or grassy areas.

• When it peaks: August through November.
• Symptoms: Sneezing, itchy throat, runny nose, post-nasal drip.

3. Dust Mites

Dust mites are year-round allergens in Florida, but they can spike in the fall when people spend more time indoors with windows closed and A/Cs running.

• Where they're found: Bedding, upholstered furniture, carpets, curtains.
• Symptoms: Morning congestion, itchy eyes, sneezing, coughing.

4. Grass Pollen

Unlike cooler states where grasses die off in fall, Florida’s grass stays green year-round. Bermudagrass and Bahia grass can still release pollen in the fall months.

• Symptoms: Sneezing, nasal congestion, itchy skin, asthma flares.

5. Indoor Allergens

As the heat continues and hurricane season winds down, many Floridians spend more time indoors. That increases exposure to:

• Pet dander
• Cockroach allergens
• Indoor mold
• Dust and chemical irritants from cleaning or renovations

How to Manage Fall Allergies in South Florida

1. Keep Indoor Air Clean

• Use HEPA filters in your HVAC system.
• Run a dehumidifier to reduce mold and dust mite activity.
• Clean air vents and replace filters monthly.

2. Control Mold Growth

• Keep bathrooms and kitchens well-ventilated.
• Fix leaks quickly.
• Clean visible mold with vinegar or mold-killing solutions.

3. Minimize Pollen Exposure

• Shower and change clothes after being outside.
• Keep windows closed, especially in the morning when pollen counts are higher.
• Use a pollen-tracking app or website to plan your outdoor activities.

4. Reduce Dust Mite Exposure

• Wash bedding weekly in hot water.
• Use allergy-proof covers for pillows and mattresses.
• Vacuum with a HEPA-filter vacuum cleaner regularly.

5. Try Medications or Allergy Treatments

• Over-the-counter antihistamines, decongestants, or nasal sprays can help.
• See an allergist if symptoms persist—they may recommend allergy testing or immunotherapy (allergy shots or drops).

When to See a Doctor

If your symptoms last longer than 2–3 weeks, interfere with sleep, or trigger asthma attacks, it's time to consult an ENT specialist or allergist. Persistent symptoms may also be due to other conditions like sinus infections or nasal polyps.

Final Thoughts

Fall in South Florida may not bring colorful leaves and chilly nights, but it does come with its own set of allergy challenges. Mold, ragweed, dust mites, and indoor allergens can all wreak havoc—especially if you're sensitive or have asthma.

The good news? With the right strategies and treatments, you can breathe easier and enjoy the season. Call the office of Dr. Lapco, ENT, in Broward
County, at 954-942-6868 to schedule an appointment for effective treatment options.