In which zone of the atmosphere is the ozone layer present?

The ozone layer is housed primarily within the stratosphere, the second tier of our atmosphere. You can locate it 15 to 30 kilometers (9 to 18 miles) high above Earth’s surface, although that is just within the stratosphere itself, as it stretches to 50 kilometers high. This layer acts as a protective shield for all living things on our planet by protecting them from the sun’s harmful ultraviolet rays.