He also laid a floral wreath on the mausoleum of Father of the Nation Quaid-e-Azam Mohammad Ali Jinnah, said a statement.
Later, the Mayor Karachi led a Fire Brigade rally in connection with Independence Day of Pakistan.
Talking to media on the occasion, he said that this year whole Pakistani nation was showing solidarity with Kashmiris and whole Pakistani nation, Army and the Government was standing by Kashmiris.
The flag of Kashmir was also hoisted besides the Pakistani flag.
Deputy Mayor Arshad Hasan, Metropolitan Commissioner Dr. Syed Saif-ur-Rehman, chairmen of KMC council and officers were also present on this occasion.
The Mayor Karachi said, "We should remember Kashmiris in these moments of observing our Independence Day."
Replying to a query, he said that infrastructure in Karachi could not bear the 200 milimetre rain.
The Sindh government should stop investing on ground and spend this money beneath the surface so that city infrastructure could be restored, he said.
He said that the drains were cleaned before rains, therefore, no overflow was seen.
He expressed hope that the Prime Minister would soon announce special funds for Karachi.