Mostly, but clouds also contain dust particles and bits and pieces of ice, depending on how high they are. It is widely accepted that clouds are made of water droplets and water vapor
clouds are large quantities of liquid water droplets
Clouds are primarily composed of water droplets or ice crystals formed from water vapor in the atmosphere. While hydrogen is present in trace amounts in Earth's atmosphere, it is not a major component of clouds.
The water in clouds is in the form of liquid droplets. Clouds are made up of tiny water droplets that have condensed from water vapor in the air. If the temperature drops low enough, these liquid water droplets can freeze and turn into ice crystals.
Tiny droplets of liquid water
Clouds are made up of very small droplets of water. Water vapour is invisible, a water vapour cloud could not be seen.
condensation
Clouds are composed of tiny water droplets or ice crystals suspended in the air, making them a mixture of both gas and liquid.
Clouds are composed of tiny water droplets or ice crystals suspended in the air, making them a mixture of both liquid and gas.
super cooled, D
When clouds form, a gas (water vapor) condenses into liquid water droplets. This is a phase change from gas to liquid, known as condensation. As the water droplets accumulate and come together, they eventually form clouds in the atmosphere.
Condensation
Liquid and solid. Clouds are formed from tiny droplets of water or ice. Low fluffy clouds are liquid, the high streak clouds are usually solid ice particles. You can see the droplets often when you walk through fog, which is the same as a cloud, but at ground level.