Divergence is where oscillators earn their reputation. It occurs when price and the oscillator move in opposite directions — and it warns that the force behind a move is fading before price actually turns. RSI divergence is one of the more reliable early-warning signals in technical analysis.
Bearish and bullish divergence
Bearish divergence: price makes a higher high, but RSI makes a lower high. Price climbed, but it did so with less momentum than before — buyers are tiring even as the chart looks strong. Bullish divergence is the mirror: price makes a lower low while RSI makes a higher low, hinting that selling is exhausting at the lows.
How to use it
Divergence is a warning, not a trigger. Momentum can fade for a long time before price actually reverses ('divergence can persist'), so acting on the divergence alone is dangerous — especially in a strong trend. Wait for confirmation: a break of structure, a trendline break, or a price-action signal at a level. Divergence tells you to get ready; price tells you to go.
Quality matters
Not all divergences are equal. The strongest appear at significant highs/lows (not minor wiggles), on higher timeframes, and at a meaningful level. A divergence on the 1-minute in the middle of a range is noise; the same pattern on the 4-hour at major resistance is worth respecting. As always, context decides.