It is called mew which causes moisture at just before dawn.

To convert moisture content from dry basis to wet basis, use the formula: MCwet = (MCdry / (1 - MCdry)) where MCwet is the moisture content on a wet basis and MCdry is the moisture content on a dry basis. For example, if the moisture content on a dry basis is 10%, the moisture content on a wet basis would be 11.1%.

Amount of water in air determines moisture. It determines the level of humidity.

Precipitation

heat