The Straits Times
Published on Sep 08, 2012

Air quality in Singapore improves after rain


Air quality in Singapore improved on Saturday, after the Pollutant Standards Index (PSI) hit a high of 79 at 7am on Friday morning.

The PSI has remained in the 'good' range throughout the day, according to the National Environment Agency (NEA). Rain on Friday night and early Saturday morning had helped to clear the haze.

As of 4pm, the PSI reading ranged between 33 to 41, with the lowest levels recorded in the south and central parts of Singapore.

Since Friday, PSI readings have been taken hourly, and they reflect the average of the PSI readings for the previous three hours. Previously, readings of the Pollutant Standards Index (PSI) were taken only at 8am, noon and 4pm daily, and they reflected 24-hour averages.