Due to heavy fog on Saturday morning, four flights have been diverted from Delhi airport.
Alam had been under house arrest since Thursday evening.
Independence Day functions across Jammu and Kashmir went off peacefully on Friday even though curfew-like-restrictions were imposed in the old city areas of Srinagar.
With the announcement, the Model Code of Conduct has come into force in the state.
A series of flash floods in Himachal Pradesh and the Union Territories of Jammu and Kashmir, and Ladakh killed at least 16 people on Wednesday and damaged several residential houses, standing crops and a mini power plant, officials said.
Kashmir University, Central University Kashmir and Islamic University of Science and Technology have postponed all examinations scheduled for Wednesday.
Activists of radical women's outfit, Dukhtaran-e-Millat on Wednesday hoisted Pakistani flags at several places in Srinagar on the occasion of Pakistan Day.
