Ideal Home Humidity in North America: 30–50%

The recommended indoor relative humidity for comfort and health in North American homes is 30% to 50%.

Why It Matters

• Below 30%: Dry skin, irritated sinuses, static electricity, wood cracking.
• Above 50%: Mold, dust mites, muggy feel, potential structural damage.

Maintenance Tips

• Use a hygrometer to monitor levels.
• Winter: Run a humidifier (heating dries air).
• Summer: Use a dehumidifier or AC to reduce moisture.
• Ventilate bathrooms/kitchens; fix leaks promptly.

Staying in range protects both occupants and the home.