Written by the Fiveable Content Team โข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated August 2025
Definition
The troposphere is the lowest layer of Earth's atmosphere where weather occurs. It extends from the Earth's surface up to about 8-15 kilometers (5-9 miles) in altitude.