The federal plan covers Sarawak, Kedah and Perlis, with the Malaysian Meteorological Department working alongside the Royal Malaysian Air Force. Sarawak officials are also weighing whether to bring forward the Sarawak operation as air quality deteriorates.

APIMS readings at 2pm on Aug 30 were 425 in Serian, 336 in Samarahan and 313 in Kuching. Cloud seeding is being considered for two practical reasons: helping haze-affected areas and adding water to dams as reserves fall.

The dates are a window, not a weather guarantee. Flights still depend on suitable clouds and their movement; daily flight times and target locations have not been announced.