A gardener works in Singapore's Marina Bay area, on Aug. 26, 2016. The three-hour Pollutants Standard Index (PSI) of Singapore hit 128 at 11 a.m. local time on Friday and reached the "unhealthy" level. (Xinhua/Then Chih Wey)
A gardener works in Singapore's Marina Bay area, on Aug. 26, 2016. The three-hour Pollutants Standard Index (PSI) of Singapore hit 128 at 11 a.m. local time on Friday and reached the "unhealthy" level. (Xinhua/Then Chih Wey)