The Straits Times
Published on Sep 08, 2012

NEA to provide hourly PSI readings until haze ends

Updates will also be the average of previous three hours


With the haze worsening yesterday, the authorities have started providing hourly updates to keep the public better informed.

Previously, readings of the Pollutant Standards Index (PSI) were taken only at 8am, noon and 4pm daily, and they reflected 24-hour averages.

Since yesterday, readings have been taken hourly, and they reflect the average of the PSI readings for the previous three hours.

Readings from 7am to 7pm will be posted on the National Environment Agency's (NEA) website.