What layer of the at atmosphere has all weather?

All weather occurs in the troposphere, which is the lowest layer of Earth's atmosphere, extending from the surface up to about 8 to 15 kilometers (5 to 9 miles) high. This layer contains most of the atmosphere's mass and is where temperature generally decreases with altitude. The presence of water vapor and various atmospheric conditions in the troposphere leads to the formation of clouds, precipitation, and various weather phenomena.