Wildfire Smoke and Your Lungs: What You Need to Know

As Southern Californians, we are no strangers to wildfire season. While fires pose an obvious threat to homes and communities, the smoke they generate can also have significant effects on respiratory health, even for individuals who live many miles away from the flames.

Wildfire smoke is a complex mixture of gases and microscopic particles produced by burning vegetation, buildings, and other materials. The greatest health concern comes from fine particulate matter, known as PM2.5, which is small enough to penetrate deep into the lungs and, in some cases, enter the bloodstream.

Who Is Most at Risk?

Although anyone can experience symptoms from smoke exposure, certain groups are particularly vulnerable:

• Individuals with asthma
• Patients with COPD or emphysema
• People with chronic lung disease
• Older adults
• Young children
• Pregnant women
• Individuals with heart disease

For these patients, even brief exposure to poor air quality can lead to worsening symptoms and increased risk of medical complications.

Common Symptoms of Smoke Exposure

Exposure to wildfire smoke may cause:

• Coughing
• Wheezing
• Shortness of breath
• Chest tightness
• Sore throat
• Eye irritation
• Fatigue
• Headaches

Individuals with pre-existing lung conditions may notice increased use of rescue inhalers, decreased exercise tolerance, or worsening respiratory symptoms.

How to Protect Yourself

The most effective way to reduce health risks is to minimize exposure.

We recommend:

• Monitoring local air quality reports.
• Keeping windows and doors closed during periods of poor air quality.
• Using high-efficiency air filtration systems when possible.
• Avoiding outdoor exercise when air quality is unhealthy.
• Wearing a properly fitted N95 mask if outdoor exposure cannot be avoided.
• Ensuring asthma and COPD medications are readily available and taken as prescribed.

Patients who use inhalers should confirm that prescriptions are current and rescue medications are not expired.

When to Seek Medical Attention

Medical evaluation should be considered if you experience:

• Persistent shortness of breath
• Wheezing not relieved by inhalers
• Chest pain
• Significant decreases in oxygen levels
• Severe coughing spells
• Symptoms that continue after smoke exposure has ended

Early intervention can help prevent more serious respiratory complications.

Long-Term Effects

For most healthy individuals, symptoms improve once air quality returns to normal. However, repeated or prolonged exposure to wildfire smoke may contribute to chronic respiratory inflammation and may worsen underlying lung disease.

Researchers continue to study the long-term health effects of recurrent wildfire exposure, particularly in regions where severe fires occur regularly.

A Message from Dr. Ashkan Naraghi

Wildfire smoke is more than a nuisance—it is a genuine respiratory health concern. Individuals with asthma, COPD, pulmonary fibrosis, and other chronic lung conditions should take air quality warnings seriously and develop a plan to protect themselves during smoke events.

If you are experiencing worsening respiratory symptoms during wildfire season, contact your physician promptly. Early evaluation and treatment can help reduce complications and keep you breathing easier.