It was the weekend as usual for many people yesterday, as they headed for outdoor activities amid clearer skies. Air quality had improved as the prevailing winds shifted to blow from the south, the National Environment Agency said in its advisory.
The Pollutant Standards Index (PSI) dipped to the moderate range at 9am and stayed in the range the rest of the day.
The situation is expected to improve further today, the agency added, with the PSI for the next 24 hours forecast to be in the moderate range.
The one-hour PM2.5 concentration over the next 24 hours is expected to stay in Band I (Normal).