>>3929248If weather sealing is necessary, there's only one brand you can rely on: Olympus.
The E-M1X, E-M1 Mk III and the E-M5 Mk III are all IPX-1 rated. Pic rel is water being poured on the camera (with a weather sealed lens mounted). Olympus encourage reviewers to literally run the cameras under a tap.
For rain, snow and dust/sand, you can rely on an Olympus to not break.