preposition / adjective / adverb / verb
near
NEER/nˈɪr/
Close to or approaching someone or something.
The child sits near the mother on the bench.

Etymology
Old English near meant 'closer,' the comparative of the word now spelled nigh. It gradually became an ordinary word for closeness rather than a comparison, allowing the new comparative nearer.
In context
Altostratus are grey and/or blue clouds that cover the whole sky. They tend to indicate a storm some time in the very near future since they usually precede inclimate weather.