Singapore's central region recorded its highest pollution index (PSI) of 170 in 2026, according to the latest data from the National Environment Agency. The reading, released on October 9, marks a sharp increase from previous levels. The PSI, which measures air quality, reached 170 in the city's core, prompting health advisories for vulnerable groups.

The spike in haze levels is attributed to a combination of factors including increased emissions from nearby industrial areas and reduced wind dispersion due to weather patterns. The National Environment Agency warned that the situation could worsen if conditions remain unchanged. Residents were advised to limit outdoor activities and use air filters.

This is the second time this year that Singapore has faced such high haze levels. The previous peak was recorded in June at 165. Environmental experts note that the trend reflects ongoing challenges in regional air quality management. The haze is primarily linked to emissions from neighboring countries, particularly Indonesia, where forest fires have been frequent this year.

The Singapore government has been working with regional partners to address the issue, but the effectiveness of these measures remains under scrutiny. With the haze season typically peaking between June and October, authorities are preparing for potential further deterioration. The situation highlights the need for stronger cross-border cooperation to tackle transboundary pollution.