| Acrobatics Circumstance | Acrobatics DC Modifier |
| Slightly obstructed (gravel, sand) | +2 |
| Severely obstructed (cavern, rubble) | +5 |
| Slightly slippery (wet) | +2 |
| Severely slippery (icy) | +5 |
| Slightly sloped (<45°) | +2 |
| Severely sloped (>45°) | +5 |
| Slightly unsteady (boat in rough water) | +2 |
| Moderately unsteady (boat in a storm) | +5 |
| Severely unsteady (earthquake) | +10 |