Singapore air quality improves to moderate levels after haze episode

Singapore's air quality showed signs of improvement early Tuesday as readings in the central region returned to moderate levels, providing relief after a period of unhealthy air conditions. The Pollutant Standards Index for the area crossed the threshold from unhealthy to moderate just after midnight, indicating a shift in atmospheric conditions. The improvement came as regional weather patterns and wind directions changed, dispersing the haze that had blanketed parts of the island. Residents in the central region, which includes densely populated areas, were able to experience cleaner air following the adjustment. Authorities will continue to monitor air quality readings across all monitoring stations throughout the island as conditions remain fluid. The National Environment Agency regularly updates the public on PSI levels, which measure concentrations of particulate matter and other pollutants in the atmosphere.