hu ‧ mid ‧ i ‧ ty /hjuːˈmɪdəti, hjuːˈmɪdɪti/ BrE AmE noun [uncountable]
1 . the amount of water contained in the air:
The room is kept at 72 degrees and 50% relative humidity.
2 . when the air is very warm and wet:
a day of hot sunshine and humidity
hu ‧ mid ‧ i ‧ ty /hjuːˈmɪdəti, hjuːˈmɪdɪti/ BrE AmE noun [uncountable]
1 . the amount of water contained in the air:
The room is kept at 72 degrees and 50% relative humidity.
2 . when the air is very warm and wet:
a day of hot sunshine and humidity
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012