New air quality reporting system from April 1 [News]
By Woo Sian Boon, TODAY, 21 Mar 2014
The new air quality reporting system — which will come into effect on April 1, one month ahead of schedule — will better reflect visibility levels during a haze, as it will incorporate levels of fine particulate matter, or PM2.5, into the Pollutant Standards Index (PSI).
In other words, the new three-hour PSI, which will be based on PM2.5, will pass the “window test”, as an official from the National Environment Agency (NEA) put it yesterday.
During the severe bout of haze last year, there was criticism from some members of the public that the PSI readings did not correspond with what they saw outside their windows.
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