In which layer of the earth's atmosphere do weather phenomena such as clouds and fog occur?

Weather phenomena such as clouds, rain and snow occur in the troposphere of the atmosphere. The troposphere is the lowest layer of the atmosphere, close to the earth's surface, with a thickness of about 10 to 20 kilometers. The atmosphere in the troposphere is greatly influenced by the earth. The temperature of this layer decreases with the increase of height, and the temperature decreases by 5 ~ 6℃ with each increase of 1000 m. Most human activities, the survival of animals and plants, are also in this layer, because this layer of air convection is obvious, so it is called the troposphere.