A state of emergency has been declared due to severe air pollution. The air pollutant index reached a reading of 515, exceeding the threshold of 500. This level is considered very hazardous, as readings above 400 fall into this category.

The situation worsened overnight, prompting the declaration of emergency. The air pollutant index reading was recorded at 5pm on Friday.

Further details are available from the source, which reported on the hazardous air quality and the resulting state of emergency in Sarawak's Serian.