In recent years, emotional intelligence has appeared as a predictor of adults' mental health, but little research has examined its involvement in adolescents' psychological adjustment. In this paper, we analyzed the predictive validity of perceived emotional intelligence (attention to feelings, emotional clarity, and emotional repair) over psychological adjustment in an adolescent sample at two temporal stages with a 1-year interval. At Time 1, the results indicated that adolescents with high scores in attention to feelings and low scores in emotional clarity and repair display poorer psychological adjustment, concretely, higher levels of anxiety, depression, and social stress and lower levels of general mental health. At Time 2, attention to feelings and emotional repair significantly predicted adolescents' psychological well-being, even when the effects of previous psychological adjustment were controlled for. The findings suggest that perceived emotional intelligence is a stable predictor of adolescent adjustment and may serve as a useful resource for preventive interventions.