South Florida Heat Index Reaches 105-110F: How to Protect Your Health and Skin

South Florida is experiencing another stretch of intense August heat. On August 4, 2026, the National Weather Service reported a moderate HeatRisk across South Florida’s urban areas, with heat-index values expected to reach approximately 105F to 110F. Sensitive individuals may be at risk for heat-related illness without adequate hydration and cooling.

For people living in Hollywood, Fort Lauderdale, Miami, and surrounding communities, this is more than uncomfortable weather. High temperatures and humidity can affect hydration, energy, mood, chronic health conditions, medications, exercise routines, and skin health.

Here is what you should know, and what you can do to protect your mind, body, and skin.

Why the heat index matters

The heat index describes how hot the weather feels when humidity is combined with the actual air temperature. Because sweat does not evaporate as efficiently in humid conditions, the body may have difficulty releasing heat.

Direct sunlight can make conditions feel even hotter than the reported heat index. The National Weather Service notes that full sun exposure may increase perceived heat-index values by as much as 15F.

Anyone can develop a heat-related illness, but additional precautions may be necessary for:

• Adults age 65 and older
• Infants and young children
• Pregnant individuals
• People with heart disease, asthma, diabetes, or other chronic conditions
• Anyone working, exercising, or spending extended time outdoors
• People taking medications that affect hydration or temperature regulation

The Centers for Disease Control and Prevention recommends staying cool, staying hydrated, recognizing the symptoms of overheating, and creating an individualized heat-action plan when health conditions or medications increase risk.

Early signs of dehydration and overheating

Dehydration does not always begin with extreme thirst. Early warning signs may include:

• Headache
• Fatigue or weakness
• Dizziness or lightheadedness
• Muscle cramps
• Nausea
• Irritability or difficulty concentrating
• Heavy sweating
• Darker urine or decreased urination

The CDC identifies muscle cramping, unusually heavy sweating, shortness of breath, dizziness, headache, weakness, and nausea as possible symptoms of overheating.

Move to a cooler environment and begin cooling down when these symptoms appear. Do not try to “push through” dizziness, weakness, or nausea during exercise or outdoor activity.

Heat exhaustion versus heat stroke

Knowing the difference between heat exhaustion and heat stroke could save a life.

Heat exhaustion

Heat exhaustion occurs when the body loses excessive water and salt, commonly through heavy sweating. Symptoms may include headache, nausea, dizziness, weakness, irritability, thirst, heavy sweating, elevated body temperature, and reduced urine output.

A person with suspected heat exhaustion should stop activity, move to a cool area, remove unnecessary clothing, take frequent sips of cool water, and receive medical evaluation, particularly when symptoms are significant, worsening, or not improving.

Heat stroke

Heat stroke is a medical emergency. Warning signs can include:

• Confusion or altered behavior
• Slurred speech
• Loss of consciousness
• Seizures
• Very high body temperature
• Hot skin, which may be dry or still sweating

Call 911 immediately when heat stroke is suspected. Move the person to a cooler location and begin rapid cooling while emergency assistance is on the way.

Your medications may affect heat tolerance

Some medications can increase dehydration, reduce sweating, affect blood pressure, alter electrolyte balance, or interfere with the body’s ability to regulate temperature. Others may be damaged when left in a hot vehicle or stored improperly.

This may be especially relevant for people taking certain psychiatric medications, blood-pressure medications, diuretics, stimulants, antihistamines, or medications for chronic medical conditions. The CDC notes that commonly prescribed medicines associated with increased heat risk include diuretics, anticholinergic agents, and some psychotropic medications.

The CDC advises patients not to stop or change medications on their own because of hot weather. Instead, speak with a healthcare provider about your individual risk, proper hydration, safe medication storage, and whether additional monitoring is necessary.

Keep medications out of parked vehicles, direct sunlight, and other excessively hot locations. Follow the storage directions provided on the label or by your pharmacist.

Practical hydration tips for Florida heat

Hydration should begin before you feel severely thirsty.

Carry a refillable water bottle and drink regularly throughout the day. The CDC recommends considering limits on beverages high in sugar or sodium, caffeine, and alcohol during hot conditions. Light-yellow or clear urine generally suggests better hydration, although individual medical conditions and medications can affect this indicator.

People with heart failure, kidney disease, fluid restrictions, or electrolyte concerns should follow their healthcare provider’s personalized instructions rather than dramatically increasing fluid intake without guidance.

Electrolyte drinks may be useful during prolonged sweating or strenuous exercise, but they are not necessary for every person or every outdoor activity. Water, balanced meals, rest breaks, and access to cooling remain the foundation of heat protection.

How extreme heat can affect mood and mental wellness

Heat can affect more than physical comfort. Poor sleep, dehydration, fatigue, disrupted routines, and limited outdoor activity may contribute to irritability, reduced concentration, anxiety, low motivation, or emotional exhaustion.

The CDC notes that dehydration may cause unclear thinking and mood changes. People living with mental health conditions may also be especially vulnerable during extreme heat.

During extended hot periods:

• Move outdoor activity to early morning or later evening.
• Maintain regular meals and sleep routines.
• Take cooling and hydration breaks before becoming exhausted.
• Check on family members who live alone.
• Seek support when anxiety, depression, irritability, or sleep problems begin interfering with daily life.

Heat may intensify an existing concern, but persistent emotional symptoms should not automatically be dismissed as “just the weather.”

Protect your skin during high heat and humidity

Sweat, sunscreen, pool chemicals, humidity, and frequent cleansing can contribute to heat rash, clogged pores, irritation, dryness, or eczema flare-ups.

The American Academy of Dermatology recommends a broad-spectrum, water-resistant sunscreen with SPF 30 or higher. Sunscreen should be combined with shade and sun-protective clothing.

Additional summer skin-care tips include:

• Apply sunscreen approximately 15 minutes before going outdoors.
• Reapply about every two hours and after swimming or sweating, following the product directions.
• Use a gentle cleanser rather than harsh or irritating soaps.
• Shower after swimming to remove chlorine, salt, and other irritants.
• Use a lightweight, non-comedogenic moisturizer appropriate for your skin type.
• Avoid leaving sunscreen in a hot car because excessive heat can accelerate the breakdown of its ingredients.
• Seek professional care if a rash or other skin problem persists or worsens.

A new sunscreen ingredient is coming to the U.S.

Summer 2026 also brings an important sunscreen update.

The U.S. Food and Drug Administration finalized an order adding bemotrizinol, also known as BEMT, as a permitted active ingredient in certain over-the-counter sunscreens at concentrations up to 6%. The order is scheduled to take effect on August 9, 2026, unless it is formally disputed under the applicable process.

Bemotrizinol provides protection against both UVA and UVB rays. The FDA considers it generally recognized as safe and effective under the conditions of the order for use in sunscreens intended for adults and children age 6 months and older.

This marks the first addition of a new active ingredient to the U.S. over-the-counter sunscreen monograph since the late 1990s. New products containing bemotrizinol may not appear immediately, because manufacturers must still develop and market finished products that comply with FDA requirements.

You do not need to wait for a new ingredient to begin protecting your skin. A sunscreen you will apply generously and consistently, along with shade and protective clothing, remains the best practical choice.

Personalized summer wellness in Hollywood, Florida

The same heat does not affect every person in the same way. Your health history, medications, activity level, skin type, hydration needs, sleep, and wellness goals all matter.

BelleVie Wellness Care provides personalized support across mental health, concierge medicine and wellness, weight-loss and hormone care, IV and cellular wellness, laboratory testing, and aesthetics and skin services in Hollywood, Florida.

A provider can help you review unexplained fatigue, recurrent dizziness, hydration concerns, medication questions, changes in mood, or skin concerns and determine whether additional evaluation is appropriate.

BelleVie Wellness Care can help

Schedule a consultation with BelleVie Wellness Care or call (954) 997-6468 to discuss a personalized summer wellness plan.

Contact us today to get started.

Educational information only. Not medical advice. Individual results may vary. Treatment eligibility and outcomes depend on provider evaluation. Call 911 for confusion, loss of consciousness, seizures, severe breathing difficulty, suspected heat stroke, or another medical emergency.