Air quality has deteriorated due to haze from fires. The Environment Department's data shows many areas are affected, with unhealthy readings recorded at numerous stations. A major public event has been postponed as a result.

Conditions are severe in some regions, with high readings reported. The worst air quality was recorded in a district in Sarawak.

Further information on the affected areas and air quality readings can be found in the original report, which provides details on the situation and its impact on scheduled events.