SINGAPORE – Air quality in the Republic has worsened, prompting authorities to write to Indonesia expressing “deep concern” over the situation.
A thin veil of grey hung over most areas of Singapore on Friday while the 24-hour Pollutant Standards Index (PSI) – a measure of air quality here – hovered between the high end of the moderate range and the low end of the unhealthy band from the early hours.
At 2pm, the 24-hour PSI across Singapore was in the range of 95 to 103. A reading above 100 refers to unhealthy air quality, in which prolonged or strenuous outdoor physical activity should be reduced.
At moderate levels between 50 and 100, normal activities can still be carried out.
– See more at: http://www.straitstimes.com/news/singapore/environment/story/singapore-writes-indonesia-express-concern-over-haze-20140919#sthash.O7M9Od2O.dpuf
