Globally, 93% of children under 18 live with air pollution levels above WHO guidelines. Air pollution causes over half of all child deaths from acute lower respiratory infection in children under 5 years in lower middle income countries. Air pollution exposure is linked to a wide range of adverse health outcomes in children, including infant mortality, asthma, neurodevelopmental disorders, and childhood cancers. By “prescribing” clean air for children, policymakers can protect them from the lifelong effects of air pollution exposure.