Haze update: PSI hits another new high of 400 at 11am on Friday
The Pollutant Standards Index (PSI) has surged to a new high of 400 at 11 am on Friday.
The reading surpassed the 371 recorded at 1 pm on Thursday.
From Friday, the National Environment Agency will issue a rolling 24-hour PSI reading every hour on its website, in addition to the three-hourly updates, to give a better sense of the likely impact on people's health.
The Government will also hold daily briefings to keep the public up to date.