Haze is keeping 591 Sarawak schools closed on Aug 21. The Sarawak Education Department said the temporary closure took effect on Aug 20 and will continue tomorrow, Aug 21, after unhealthy Air Pollutant Index (API) readings were recorded at 3pm. The order affects 509 primary schools with 107,590 pupils and 82 secondary schools with 89,733 students. The 10 affected district education offices cover Kuching, Padawan, Bau, Lundu, Samarahan, Simunjan, Serian, Sri Aman, Lubok Antu and Betong. Schools have been told to monitor readings through the Department of Environment's APIMS system and follow Ministry of Health advice. Any further update will be announced by the department. Because these readings are tied to 2026-08-20, parents should check the latest APIMS update and their school's notice before making plans for attendance or outdoor activities. A reopening is not a permanent all-clear if the API rises again. [image: 1787220315028-haze-chimon-20260820.jpg]