What humidity level should I maintain in my bedroom?

The ideal bedroom humidity is 40 to 60 percent. Below 30 percent, you will notice dry skin, static electricity, and irritated sinuses. Above 60 percent, you risk mold growth, dust mite proliferation, and a clammy feeling. Many humidifiers include a built in hygrometer that automatically adjusts output, which is the easiest way to stay in the ideal range. If yours does not, a standalone hygrometer is affordable and worth having.