Following are the five main layers of the atmosphere:

(i) Troposphere: It is the lowest layer that contains air and that extends up to 8-20 km from the Earth.

(ii) Stratosphere: It is the second layer of atmosphere that extends up to 50 km from the Earth.

(iii) Mesosphere: It is the third layer of the atmosphere that lies above the stratosphere.

(iv) Thermosphere: It is the fourth layer of atmosphere that extends up to 100-120 km from the Earth.

(v) Exosphere: It is the outermost layer of the atmosphere.