While new medications have been used to better manage chronic asthma, acute exacerbations continue to be a significant cause of pediatric morbidity and mortality. Montelukast holds an established role in the pediatric outpatient management of asthma and while two promising studies in adults have demonstrated its potential use as an adjunctive therapy for acute exacerbations, its similar use in pediatrics has yet to be established. This pilot study is designed as a prospective, double blinded, randomized, controlled, clinical trial comparing the use of oral montelukast plus standard of care vs. standard of care alone in children admitted for status asthmaticus to the pediatric intensive care unit (PICU). The primary outcome the investigators are interested in is the time to reach a Modified Pediatric Asthma Score (PAS) of \< 5, which, per the clinical protocol for the treatment of status asthmaticus, is the time when patients are able to come off continuous bronchodilator therapy. If oral montelukast, given with other standard therapies, can reduce the treatment, emotional, and financial burden (e.g., shortened intensive care stay) associated with severe, acute asthma exacerbations in children, it would provide a significant therapeutic advantage, potentially improving both the morbidity and burden of pediatric asthma.