In which layer of the atmosphere does most weather occur?

The troposphere is the lowest layer of the Earth's atmosphere and is where most of our weather phenomena take place. This layer extends from the Earth's surface up to approximately 7 to 20 kilometers in altitude, depending on the latitude and weather conditions. The troposphere contains the majority of the atmosphere's mass, including clouds, precipitation, and other weather-related events.

The presence of water vapor in the troposphere is crucial for weather formation, as it allows for processes such as cloud condensation and precipitation. This layer is also characterized by temperature decreasing with altitude, which contributes to the development of various weather systems.

In contrast, the stratosphere, which lies above the troposphere, is where the ozone layer is located. This layer is more stable and does not support typical weather phenomena due to its lack of vertical mixing and lower density of air. The mesosphere, located above the stratosphere, experiences even higher altitudes and is known for temperature decreases with altitude and very little weather activity. The exosphere is the outermost layer, where the atmosphere thins out and merges into space; weather does not occur here. Thus, the troposphere is clearly identified as the layer where weather occurs.