Yug

If you had space you could build an airwell. In ancient times, these were used in places of high elevation in order to get drinking water. It is a pile of rocks that has a space underneath for a pool of water to be captured. The rocks must allow some air to pass between them, and as the sun heats the outer layer of rock, the temperature differential between the outer layer, and the cool inner layer, will cause the moisture in the air to condense. It then drips down to the catchment pool, and is drawn off as needed. It is ancient technology, but still works since there is almost always some amount of moisture in the air - even in the desert. Google it.