SINGAPORE - Air quality is expected to continue in the moderate range on Monday (Sept 5), said the National Environment Agency (NEA).
The 1-hour PM2.5 reading is also expected to stay in the normal band.
As of 5pm on Sunday, the 24-hour PSI reading was in the moderate range at 54 to 71, while 1-hour PM2.5 concentrations were in the normal band at 7 to 51 micrograms per cubic metre.
In Sumatra, only one hot spot was detected and no visible smoke observed on Sunday, although this was partly due to cloud cover.
It rained heavily in Singapore on Sunday afternoon, and thundery showers are expected again on Monday morning.
Prevailing winds from the south and south-west, as well as a forecast of showers in both Singapore and Sumatra, mean that the likelihood of haze in the next few days is low, NEA said.