Today is windless, and the lake surface is like a mirror.
noun which may take the genitive case particle 'no', noun
quiet; peaceful; stable; safe (seat)
Figurative use for a situation without conflict, change, or competition; in politics, refers to a safe electoral seat with little contest.
会議は無風のまま終わった。
The meeting ended quietly without any conflict.
彼の選挙区は無風区だ。
His electoral district is a safe seat.
The sea was completely calm today, with almost no waves.
That industry has remained in a stable, uneventful state for a while.