Should I keep my MacBook Air out of high humidity?

Regarding the MacBook Air: Yes. Long-term exposure to high humidity above 80% can cause corrosion on internal connectors, the charging port, and logic board traces, leading to flaky keyboards, unresponsive trackpads, or charging issues. Condensation from moving between humid and air-conditioned spaces can also short the machine. Keep it in an air-conditioned room when not in use and consider a silica gel pack in your laptop bag.