I say I don’t want them near me, dark clouds (5)

I believe the answer is:

nimbi

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'dark clouds' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

(Other definitions for nimbi that I've seen before include "Rain clouds - halos" , "Rain-bearing clouds" , "Dark things" , "Rain-clouds" , "They may surround the head" .)

I've seen this clue in The Times.

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