| 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 |