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It might seem counterintuitive that the fluffy, cotton-like puffs drifting across the sky carry immense weight, but an average cumulus cloud has a mass equivalent to about 100 elephants. The secret to how something so heavy stays afloat lies in its distribution. This enormous weight is not a solid block of water; instead, it is dispersed into billions of microscopic water droplets or ice crystals spread out over a vast volume of air. Each droplet is so tiny and lightweight that its fall is incredibly slow, and the overall density of the cloud is only slightly greater than the density of the dry air around it.
The real key to a cloud's suspension, however, is the air itself. Clouds are formed and sustained by updrafts, which are columns of warm, rising air from the ground. This upward-moving air pushes on the tiny water droplets, counteracting the pull of gravity and keeping them aloft in a constant, dynamic balance. It's only when these droplets collide and merge, growing too large and heavy for the updrafts to support, that they finally fall to the Earth as rain, snow, or hail, releasing their massive weight.