Did you know that the clouds you see contain thousands of tons of water, and the water in the clouds is 100% pure. But on one condition! If there is no rain for 2-3 months then suddenly it rains one day, the rain water becomes a bit acidic. It's better not to use it. Now lets go to the point, if there are thousands of tons of water in the clouds, then how can it float in the sky? The simple answer is that the density of water vapor in the clouds is much lower than the density of water, which is lower than the density of air, so it floats in the sky. However, the amount of particles in the cloud can store much more water.