Produced water is chemically very complex. The process of producing and processing produced water causes changes in temperature and pressure. The addition of treating chemicals, along with the presence of coproduced gas, oil, and likely solids, changes the produced-water properties and behavior.
Many times, relative humidity can be misleading. For example, a temperature of 30 and a dew point of 30 will give you a relative humidity of 100%, but a temperature of 80 and a dew point of 60 produces a relative humidity of 50%. It would feel much more humid on the 80 degree day with 50% relative humidity than on the 30 degree day with a 100% relative humidity.
Higher temperatures make higher levels of humidity possible. This is because warm air is capable of holding more moisture than cold air. Warm air has a stronger bond to water molecules, making the air feel drier and allowing more water to bond with air. In weather forecasting, humidity that is expressed as a percentage is called relative humidity. Relative humidity measures how much of the air's current moisture capacity is used. A relative humidity of 50 percent means that the air holds 50 percent of the moisture possible at the current temperature. This percentage changes with temperature, since colder air holds less moisture. A relative humidity of 100 percent means that the air is completely saturated with moisture.