Clouds are formed in the troposphere, the lowest layer of the Earth's atmosphere. This is where we live, and it's also where most of the weather occurs.
The troposphere is characterized by decreasing temperature with altitude. This temperature gradient is crucial for cloud formation, as warm, moist air rises and cools, causing water vapor to condense into tiny water droplets or ice crystals. These droplets or crystals then form the visible clouds we see in the sky.
It's important to note that different types of clouds form at different altitudes within the troposphere. For example, high-altitude clouds like cirrus clouds are composed of ice crystals, while low-altitude clouds like stratus clouds are composed of water droplets.
