Singapore's air quality deteriorated overnight, with the Pollutant Standards Index (PSI) rising into the unhealthy range. The haze, attributed to regional forest fires, caused a sharp increase in particulate matter levels. Residents were advised to limit outdoor activities. The National Environment Agency (NEA) reported the PSI reached 123, exceeding the threshold for unhealthy air. The situation is expected to persist through the morning.

The haze, which has been a recurring issue in Southeast Asia, is linked to fires in Indonesia. These fires, often linked to land clearing, release large amounts of smoke and pollutants. Singapore, located downwind of the affected areas, is particularly vulnerable. The NEA has been monitoring the situation closely and issuing regular updates.

This is the second time this month that Singapore has experienced a significant rise in haze levels. The first spike occurred earlier in the week, prompting similar advisories. The government has urged neighboring countries to take measures to reduce emissions. Environmental groups have called for stronger regional cooperation to address the root causes of the haze. The situation remains under review, with no immediate signs of improvement.