To the Editor,The coronavirus disease 2019 (COVID‐19) pandemic imposed limitations on health care and clinical research that increased the need for remote monitoring of chronic pulmonary diseases. Mobile spirometers for home monitoring of lung function have been commercially available for years but have not been widely adopted in clinical practice in the United States. Multiple published investigations demonstrate that home spirometry measurements are reproducible and show a high degree of correlation with clinic‐based spirometers in adults with asthma or chronic obstructive pulmonary disease (COPD). Home spirometry studies of children have focused on the cystic fibrosis (CF) population rather than asthma and have reported little data on use in adolescent populations. Adolescents tend to have low engagement in asthma self‐management and represent a group at high risk of asthma‐related morbidity and mortality. The objective of our study was to determine if unsupervised home monitoring of lung function in adolescents at risk for future asthma exacerbation could detect clinically significant changes in forced expiratory volume in 1 second (FEV1) during mild loss‐of‐control events. Early and accurate detection of loss‐of‐control events would allow for earlier intervention to prevent progression to severe symptoms.