Hotspots detected in Johor, sending haze and smoke plumes to Singapore: NEA

Hotspots in eastern Johor were spotted, with winds causing smoke plumes to drift towards Singapore, the National Environment Agency (NEA) said on Monday (Mar 30).

As of 7pm, the 24-hour Pollutant Standard Index (PSI) ranged from 56 to 71, within the moderate range.

According to NEA records, a 24-hour PSI of 71 is the joint-highest reading this year, with another instance recorded on Mar 24.

The 24-hour PSI is computed based on six air pollutants - PM2.5, PM10, ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide.

With northeasterly winds carrying smoke to Singapore, 1-hour PM2.5 levels in certain regions could increase, depending on the wind conditions, NEA said.

Northeasterly winds carried smoke plumes from hotspots in Johor towards Singapore on Mar 30, 2026. (Image: Facebook/National Environment Agency)

NEA advised the public to refer to the 1-hour PM2.5 levels when carrying out outdoor activities in the immediate hour.

Clinics in Singapore have reported a rise in haze-related cases over the past three months, with patients presenting not only respiratory symptoms but also issues like itchy eyes and skin flare-ups.