The guidance aligns with federal Air Quality Index (AQI) recommendations and links indoor recess recommendations to PM2.5 levels, which is the air pollutant of main concern during winter months. The guidance also takes into account students with respiratory symptoms or pre-existing respiratory conditions who may be more sensitive to poor air quality.
**Respiratory symptoms may include coughing, wheezing, shortness of breath, and chest tightness.
***Sensitive students may include those with asthma, cystic fibrosis, chronic lung disease, congenital heart disease, compromised immune systems, or other respiratory problems.
Parents, with the advice of their health care provider, should inform the school if their child is part of a sensitive group who should have limited outdoor physical activity when air quality is poor.
As outlined in the graph, students with respiratory symptoms or other health concerns should remain indoors when PM2.5 levels are above 35.5. All students remain indoors when PM2.5 levels are above 55.5.