Synonyms for Cloudless:

adj.

all (adjective)
unclouded.
clear (adjective)
bright, sunny, fair.
transparent (adjective)
clear.

n.

clement, sunny, still, windless, bright, fair, calm, equable. fine. cloudless (noun)
clear, unclouded.

Other synonyms:

clement, windless. bright, equable. fair. fine. calm. still. Other relevant words:
equable, fine, still, clement, fair, windless, sunny, calm, bright.

Usage examples for cloudless

  1. Another night passed, and the day that followed was pretty fair, and towards evening the sky was almost cloudless – From Plotzk to Boston by Mary Antin Commentator: Israel Zangwill
  2. Not a waft to cool his perplexed forehead, not breeze enough to stir the short grass that glared for miles over country flat enough to mock him with the fullest possible view of the cloudless sky. – Jan of the Windmill by Juliana Horatia Ewing
  3. The mighty sun rose over Long Island in a blaze of glory, and shot upward into a cloudless sky as the anchor was lifted. – Hurricane Hurry by W.H.G. Kingston