Once in a while you get shown the light
In the strangest of places if you look at it right. Robert Hunter
An eyewash statiion is likely to be installed in an industrial facility or other process operations where there is a risk, however minimal, of eyes being subjected to harmful substances used in the process.
The cost to such an operation of making a local switch weatherproof would likely be negligible in the scale of their operation.
Just do it and the concerns expressed here, regardless of your views on their validity, are gone at a stroke.
Si hoc legere scis nimium eruditionis habes.
I would LOVE to address actiondave's argument re: perceived vs actual safety, however I cannot due to no politics policy on this forum.
Electricians do it until it Hertz!
How does that change things?
The OP is asking if the presence of a emergency eye wash station near an electrical device is a code violation.
Please stick with that, and cite the code section.
Indoors, outdoors gravity or pressure none of that comes into the question the OP asks .... unless I am missing a code section.