$IOST Daily RSI has surged to 76.4
Don't rush—understand RSI before taking action
The RSI for the same coin can vary considerably across timeframes: when it's high on the 4-hour chart, the daily chart may still be in neutral territory.
Cross-checking multiple indicators is more reliable than looking at just one, but even more indicators can't provide a definite answer.

Use it as a reference, and don't believe it blindly.