Indianapolis Experts Offer Guidance on Protecting Indoor Air Quality from Wildfire Smoke
WISH-TV in Indianapolis is reporting on methods to safeguard indoor air quality from the effects of wildfire smoke.
Indianapolis, IN, July 21, 2026 —
As wildfire smoke continues to pose a threat to air quality across various regions, experts in Indianapolis are highlighting strategies to protect indoor environments. WISH-TV has been reporting on these methods, emphasizing the importance of maintaining healthy indoor air, particularly for vulnerable populations.
The impact of wildfire smoke can extend far beyond the immediate vicinity of the fires, with fine particulate matter capable of traveling hundreds of miles. This particulate matter, often referred to as PM2.5, can penetrate deep into the lungs and cause respiratory and cardiovascular issues. According to health officials, elevated levels of smoke can lead to symptoms such as coughing, shortness of breath, and irritated eyes and throat, even for individuals who are otherwise healthy.
To combat the infiltration of smoke particles, several recommendations have been put forth by indoor air quality specialists. A primary recommendation involves the use of high-efficiency particulate air (HEPA) filters. These filters are designed to capture tiny particles, including those found in wildfire smoke, and can be incorporated into portable air purifiers or home HVAC systems.
Key strategies for improving indoor air quality include:
- Using portable air purifiers with HEPA filters: Placing these units in rooms where people spend the most time, such as bedrooms and living areas, can significantly reduce indoor particle concentrations.
- Upgrading HVAC filters: If a home’s central air system is equipped to handle higher MERV (Minimum Efficiency Reporting Value) rated filters, upgrading to a MERV 13 or higher can help capture more fine particles. It is important to ensure the HVAC system can accommodate a denser filter without straining the motor.
- Sealing indoor spaces: Reducing the exchange of indoor and outdoor air can help keep smoke out. This includes closing windows and doors, and using weather stripping or caulk to seal gaps around windows and doors.
- Running ventilation systems in recirculate mode: If a home has a central air system, operating it in the ‘recirculate’ setting can help filter the indoor air without drawing in as much smoky outdoor air.
- Avoiding activities that create indoor pollutants: During periods of poor outdoor air quality, it is advisable to refrain from activities like vacuuming (which can stir up dust) or using aerosol sprays, as well as to limit the use of unvented stoves or fireplaces.
Health authorities often advise that individuals with pre-existing respiratory conditions, such as asthma or COPD, as well as children and the elderly, are at higher risk and should take extra precautions. Staying informed about local air quality advisories and recommendations from health agencies is crucial during periods of wildfire smoke events.
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