The Hong Kong Environmental Protection Department uses the Air Quality Health Index (AQHI), to advise the public about day-to-day risks associated with air pollution. The nurse in each division checks the AQHI regularly throughout the day and advises when the levels reach 6, 8 or 10+ so appropriate measures can be taken.If you would like your child to remain indoors due to AQHI 6 and above please indicate on PowerSchool. Please know that your child will miss PE (if outdoor), recess, and/ or field trips (if outdoor) under these circumstances.For the latest AQHI information, please visit: www.aqhi.gov.hk/en.html