This is the 10805th most frequent French word.
nébulosité
The degree of cloudiness in the sky.
In this sentence, 'nébulosité' refers to the meteorological condition indicating the cloud cover in the sky, used as a noun.
La nébulosité du ciel aujourd'hui est assez importante.
The cloudiness of the sky today is quite significant.
Here, 'nébulosité' represents the abstract quality of being unclear or obscure, applied metaphorically to communication or ideas.
Son discours était marqué par une certaine nébulosité conceptuelle.
His speech was marked by a certain conceptual obscurity.
In this usage, 'nébulosité' is related to space science, describing the presence of nebulae or cloudy material in astronomical observations.