The maximum amount of water vapor that air can hold before becoming saturated (the saturation vapor pressure/capacity) is fundamentally a function of air temperature: warmer air can hold substantially more water vapor than colder air, following the Clausius-Clapeyron relationship, which describes how saturation vapor pressure increases roughly exponentially with temperature.
The saturation vapor pressure of air, which sets the maximum amount of water vapor the air can hold at a given temperature before condensation occurs,...
Full option-by-option analysis available to enrolled students.