dampness

/D AE1 M P N IH0 S/
noun
  1. 1

    Moderate humidity; moisture; moistness.

  2. 2

    The degree to which something is damp or moist.

    โ€œThe dampness in the writing paper caused the ink to spread and smudge.โ€

Source: https://en.wiktionary.org/wiki/dampness