When answering the question ‘what is humidity?’, it may be useful to first clarify that what many refer to simply as ‘humidity’ is actually ‘relative humidity’, the amount of water vapor that is present in a mixture of air and water vapor. Environmental humidity levels vary from climate to climate – in tropical climates humidity levels are high. For this reason, when growing tropical plants in a greenhouse, humidifier machines are often used to help replicate the native environment of the plant in question.
When people talk about humidity what they are actually referring to relative humidity. In simple terms, relative humidity is the amount of moisture in the atmosphere in comparison to a standard measurement. Normal humidity levels vary from region to region, with tropical regions having the highest humidity and thus the highest rainfall as well – regions such as the Amazonian jungle, for instance. Ambient humidity levels can be manipulated via the use of a room humidifier system.
Humidity refers to the amount of moisture present in the atmosphere, and is an essential factor in the growth of plants and many industrial and agricultural processes such as wine making. The higher humidity in tropical regions, for example, means that plants such as ferns which thrive in damp areas are more prominent. Humidity regulators, which are also referred to as climate control systems, are used in a wide variety of industries, for various purposes.