At the IPD Serian monitoring station, the sequence was 495 at 7am, 502 at 8am, 510 at 9am and 518 at 10am. Elsewhere, Lundu (323), Tebedu (345) and Lubok Antu (398) were hazardous, while Samarahan (281) and Sri Aman (245) were very unhealthy.

An API above 300 is classified as hazardous. Sarawak authorities had identified 500 as the threshold that could trigger an emergency declaration for the affected locality, but the reports carrying the 10am readings did not announce one.

The 10am figures are a snapshot, not an all-day forecast. The Department of Environment updates MyEQMS hourly; check the latest station reading before heading outdoors and cut back on prolonged outdoor activity while the index remains hazardous.