Troposphere

The troposphere is the lowest layer of Earth’s atmosphere, where we live and where most weather occurs. It extends from the surface up to about 8 to 15 kilometers (5 to 9 miles) high, depending on location. This layer contains most of the atmospheric gases, including oxygen and nitrogen, as well as water vapor, which creates clouds and weather patterns. Temperature decreases with altitude in the troposphere. It plays a vital role in climate regulation and supports life by providing the air we breathe.