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Singapore's air quality deteriorates as transboundary haze drifts in

Air quality in central and western Singapore has slipped into the unhealthy range, driven by smoke drifting across the Strait from southern Sumatra. Authorities warn of sustained risk from transboundary haze in the coming period.

LSN Singapore · 5 October 2026

Singapore's air quality deteriorates as transboundary haze drifts in

Air quality monitoring stations across central and western Singapore registered unhealthy readings on Tuesday, marking a deterioration in atmospheric conditions across the island-state. The decline has been attributed to smoke plumes originating from southern Sumatra, which have been transported across regional borders by prevailing wind patterns.

The transboundary haze poses a continued threat to Singapore's air quality in the near term, with meteorological conditions expected to maintain the flow of smoke into the region. Authorities have flagged the persistence of this risk, signaling that residents in affected areas should remain vigilant regarding air quality developments.

Central and western zones have borne the brunt of the current haze episode, though the situation remains fluid as wind patterns evolve. The National Environment Agency has been monitoring air quality indices closely, tracking concentrations of fine particulate matter and other pollutants associated with smoke emissions.

Members of vulnerable populations, including children, the elderly, and those with respiratory conditions, have been advised to limit outdoor activities and consider using air purification measures. The agency has recommended that residents consult real-time air quality data before planning outdoor engagements in affected areas.