Air quality in Singapore has improved significantly, moving out of the unhealthy range. As of 9pm on September 5th, the 24-hour Pollutant Standards Index (PSI) in the central region registered at 98. This reading indicates a return to moderate air quality, a positive change from earlier, higher levels. The National Environment Agency has not released details regarding the cause of the prior deterioration, but the improvement suggests a lessening of contributing factors. Residents can expect better air quality conditions for the time being. Further updates will be provided as needed, though current data suggests no immediate health concerns related to air pollution. This improvement will be welcomed by those sensitive to poor air quality.