According to the EPA, indoor air can be up to 5 times more polluted than outdoor air. We spend 90% of our time indoors — the air quality we breathe at home directly impacts our health, sleep, and concentration.
Main Sources of Indoor Pollution
VOCs (volatile organic compounds): paints, varnishes, adhesives, cleaning products, new furniture. Mold: encouraged by excess humidity, it releases dangerous spores. CO₂: produced by breathing and combustion equipment. Fine particles: cooking, candles, incense, tobacco.
Signs of Problematic Air Quality
Frequent headaches, unexplained fatigue, eye or throat irritation, worsening asthma and allergies, feeling of heavy stuffy air.
Practical Solutions
Ventilate 10 minutes daily with cross-ventilation, even in winter: the simplest and most effective solution. HEPA air purifier: captures 99.97% of 0.3-micron particles. CO₂ and air quality monitor (Awair Element, Netatmo): real-time alerts. Air-purifying plants: peace lily, pothos, snake plant.
Humidity: An Often Overlooked Factor
Ideal: 40–60%. Too dry: viruses survive better. Too humid: mold proliferates. A digital hygrometer (under $20) monitors this continuously.