Performance of a microenviromental model for estimating personal NO2 exposure in children

► A novel microenvironmental model (MEEM) was developed. ► MEEM combines children's time-activity data with indoor and outdoor air pollution. ► NO2 exposures predicted by MEEM were compared against personal measurements. ► MEEM predicted personal NO2 exposure with a good level of agreement. ► MEEM performed better than an outdoor model and urban monitoring stations.