There is no way to turn off the light but that is the indicator that it is on or if water is low. The light is only a small bulb at the very bottom and is not very bright. We have it in our bedroom and it is barely noticeable. I think if having any kind of light bothers you, just set it behind something or wrap a towel around the clear portion of the unit. Just be sure to check it as then you won't be able to see the water level or light. Hope this helps.