How Much Does a Cloud Actually Weigh?

💡 The Answer

• A typical cloud has a volume of around 1 cubic kilometre and a density of about 1.003kg per cubic metre.
• This adds up to approximately one million tonnes of water droplets suspended in the sky.
• Clouds float because their density is around 0.4 per cent lower than the surrounding air.
• The weight is spread across such a vast volume that the upward air pressure keeps them aloft.