What Does Relative Strength Index Actually Read on CL 15-minute Charts?
Educational reference. Measured from 5,443 recorded values on Crude Oil 15-minute charts through September 29, 2026.
The middle half of all readings sat between 42.48 and 60.31, with a median of 51.07.
Relative Strength Index measures where price sits within its own recent gains and losses, on a 0–100 scale. This page reports what it actually read on Crude Oil 15-minute charts — not what it is supposed to do, but the distribution of 5,443 recorded values over the last 90 days.
| Series | Median | Middle half | 5th / 95th | Full range |
|---|---|---|---|---|
| Relative Strength Index | 51.07 | 42.48 – 60.31 | 31.10 / 72.11 | 13.04 – 87.52 |
| Avg | 49.48 | 40.72 – 58.12 | 30.17 / 70.44 | 18.93 – 79.69 |
The median is the middle reading, so a single unusual session cannot drag it. The middle half is where Relative Strength Index sat on half of all bars — the range you should expect to see most of the time on this chart.
How often it reaches the levels people watch
| Reading | Bars | Share |
|---|---|---|
| Above 70 | 390 | 7.2% |
| Between 30 and 70 | 4,822 | 88.6% |
| Below 30 | 231 | 4.2% |
Relative Strength Index spent 89% of its time between 30 and 70 on this chart. A reading beyond 70 appeared about once every 14 bars, and below 30 about once every 24. How rare a signal is matters as much as what it says.
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How this was measured
Every 15-minute bar of Crude Oil recorded in the last 90 days was read, and the values grouped without smoothing or filtering. Series with fewer than 400 readings are omitted rather than shown on thin evidence. These are recorded values, not predictions.
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