Ideal indoor relative humidity?

Question

Ideal indoor relative humidity?

Answer 1

Relative humidity is very important to keeps the environment stay comfortable..

I found that when relative humidity is kept at about 50%, office workers have fewer respiratory problems (specifically in the winter) and generally feel better. Higher humidity makes the office feels "stuffy". More important, it can contribute to the development of bacterial and fungal growth (especially in sealed buildings). Humidity lower then 50% causes discomfort by drying out the mucous membranes, contributing to skin rashes, and causing some electrostatic disturbances to both office equipment and their users.”

From the University of Sydney:

Optimum humidity range 40-60%. Minimum recommended fresh air rate 10 Litres per second (L/s) per person or 10 L/s per 10 m2 for mechanical ventilation systems Optimum air movement 0.1-0.5 m/s (naturally ventilated), 0.1-0.2 m/s (air- conditioned).

Hope this helps..

Answer 2

This is all relative to the person.  However, you don't want a high humidity in your house due to the possibility for mold and stuff and you don't want a low one because then you'd get a sore throat and dry skin.

I'd say like 40%