Dry air is defined as air that has a low amount of water vapor present in it. This can occur in various environments, especially in areas with low humidity or during colder seasons when the air can hold less moisture. Unlike humid air, which contains a higher concentration of water vapor, dry air can feel cool and crisp and is often associated with clarity in the atmosphere.
The relative humidity of dry air typically sits below 30%. When the air is too dry, it can cause discomfort, leading to dry skin, irritations in the respiratory system, and can even affect the quality of certain environments, such as homes and workplaces.
Dry air is common in desert regions, during winter months, or in places with strong heating systems. To mitigate the effects of dry air, people often use humidifiers to add moisture back into their living spaces, especially during the dry winter months.