SINGAPORE - Air quality is expected to remain in the moderate range on Monday (Nov 2), the National Environment Agency (NEA) said in a 4pm update on Sunday.

Thundery showers have been a regular occurrence over the last few days as Singaporeans enjoyed an extended spell of clear skies, with more rain forecast to fall on Monday afternoon.

The NEA added that visibility will stay normal. Prevailing winds are expected to be weak and blow from the northeast or east.

There were 19 hotspots detected in Sumatra on Sunday, with moderate haze observed over the island's southern region.

As of 5pm on Sunday, the 24-hour Pollutant Standards Index (PSI) was in the moderate (51-100) zone at 58-65.

The three-hour PSI, not tied to any health advisory, stood at 72.

Given the air quality forecast for the next 24 hours, everyone can continue with normal activities.

For more updates, visit the NEA website (www.nea.gov.sg), the haze microsite (www.haze.gov.sg), the NEA Facebook page (www.facebook.com/NEASingapore) and Twitter (@NEAsg), or download the myENV app.