The 30th Weather Squadron was created on 29 August 1945, at Harmon Field. During the 40s and 50s it was moved across several bases in Korea and Japan, inactivated and reactivated before inactivation on 8 August 1959. As the Vietnam War began, the squadron was reactivated in 1962 at Tan Son Nhut AB where it remained until inactivation on 1 July 1971. Reactivated again in 1976 at Yongsan AIN, Korea it remained until 1 June 1992.