danger level; risk level; degree of danger
Used to quantify or describe how dangerous something is, often in safety assessments, weather warnings, or risk evaluations.
The earthquake risk level in this area is high.
The typhoon danger level is rising.
Compound of 危険 (danger) and 度 (degree, level). The exact historical derivation is uncertain, but the word follows a common pattern for forming nouns indicating a measurable degree.