What should the average bmi for a 13 year old be?

According to the Centers for Disease Control and Prevention (CDC), the average body mass index (BMI) for a 13-year-old child varies depending on their sex. For girls, the average BMI is between 18.5 and 22.9, while for boys, the average BMI is between 17.7 and 23.4. It is important to note that BMI is just one measure of overall health and should be considered in conjunction with other factors such as physical activity, diet, and overall growth and development.