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The transboundary haze crisis in Singapore lasted for approximately 4 days from 20 October to 23 October 2010. [16] During this period, the overall 24-hour Pollutant Standard Index (PSI), recorded by the National Environment Agency (NEA) was mainly in the high-moderate range while the hourly PSI crept into the unhealthy range of 108. [17]
This 3-hour PSI is unique to Singapore and was introduced in 1997 to provide additional air quality information which would better reflect a more current air quality situation. [3] In 2016, the 3-hour PSI was phased out on the grounds that the 1-hour PM 2.5 reading was a better indicator of the current air quality.
The 24-hour PSI on 20 October also reached the unhealthy range at 102. [28] Later in October, though, the situation began to improve, with the PSI hitting a low of 11 at 2 p.m. on 26 October. However, in early November, intermonsoonal winds brought slight haze back to Singapore, with the 3-hour PSI in the moderate range most of the time.
The headquarters of the National Environment Agency, Singapore is located at Environment Building on Scotts Road. National Environment Agency (NEA) is a statutory board under the Ministry of Sustainability and the Environment of the Government of Singapore. The NEA is responsible for improving and sustaining a clean and green environment in ...
Issuance of Legal Notices: In 2015, the National Environment Agency (NEA) of Singapore issued legal notices to six Indonesian businesses suspected of causing fires on their lands, which contributed to the haze pollution in Singapore. These notices were a direct application of the THPA to hold companies accountable for transboundary pollution.
At 4pm on 14 September 2019, the 24-hour Pollutant Standards Index (PSI) entered the "unhealthy" range of above 100 for the first time since 2016, [32] starting from 103 in western Singapore. The PSI steadily climbed up [33] with all parts of Singapore registering "unhealthy" PSI readings at 1am the next day, peaking at 124 from 5am to 8am in ...
2.8 Singapore. 2.9 South Korea. ... The PSI chart below is grouped by index values and descriptors, according to the National Environment Agency. [36]
The graph plots the PSI readings released by NEA from 20 to 21 June 2013. At 12 p.m. on 21 June 2013, the readings reached a record-breaking level of 401, in the highest possible Hazardous range. Mild haze began to affect Singapore on 13 June, [ 106 ] before air quality worsened and remained in the Unhealthy range for a few days. [ 107 ]