06 Oct '15, 12am

#SGHaze at

#SGHaze at

The PSI readings reflect a total of six pollutants - sulphur dioxide (SO2), particulate matter (PM10), fine particulate matter (PM2.5), nitrogen dioxide (NO2), carbon monoxide (CO) and ozone (O3). The air quality in Singapore is monitored through a network of air monitoring stations located in different parts of the island and is based on air quality reporting systems used by various countries that incorporate in their index, PM2.5 concentrations, which is considered an important component of air quality that impacts health. Since August 2012, the PM2.5 concentrations have been included in PSI readings. And since 2014, the 3-hour PSI is also calculated based on PM2.5 concentration levels (as opposed to readings of particulate matter or PM10 over a 3-hour period). Due to the more stringent bandings for PM2.5 there will be higher 3-hour PSI readings. As the 3-hour PSI is bas...

Full article: http://www.channelnewsasia.com/news/psi

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#SGHaze update: 24-hour PSI in unhealthy range ...

straitstimes.com 28 Sep '15, 12am

SINGAPORE - Hazy conditions will continue on Tuesday (Sept 29) with the 24-hour Pollutant Standards Index (PSI) set to ris...

#SGHaze update at 8am: 3-hour PSI is 315, while...

channelnewsasia.com 25 Sep '15, 12am

SINGAPORE: Hazy conditions in Singapore further deteriorated over Wednesday night, said the National Environment Agency (N...

#SGhaze: Haze situation improves on Saturday as 24-hour PSI drops below 200

#SGhaze: Haze situation improves on Saturday as...

straitstimes.com 26 Sep '15, 3am

SINGAPORE - The haze situation in Singapore improved on Saturday after the 24-hour Pollutant Standards Index (PSI) reached...

4pm #SGhaze update: 24-hour PSI: 232-273 (Very ...

straitstimes.com 25 Sep '15, 8am

SINGAPORE - The haze situation improved on Friday afternoon even though the 24-hour PSI remained in the higher end of the ...

haze update: 24-hour PSI:

haze update: 24-hour PSI:

straitstimes.com 04 Oct '15, 3am

SINGAPORE - Clearer skies were evident over many parts of Singapore as the haze receded somewhat on Sunday (Oct 4), with c...

#Haze: #Singapore result records very unhealthy PSI reading

#Haze: #Singapore result records very unhealthy...

nst.com.my 29 Sep '15, 6am

SINGAPORE: The haze in Singapore continues to worsen today hitting the “very unhealthy” level despite some improvement ear...

#SGhaze: 3-hr PSI at

channelnewsasia.com 29 Sep '15, 7am

SINGAPORE: The current hazy conditions in Singapore are expected to persist through Wednesday, said the National Environme...

#SGhaze update (9pm): 24-hr PSI is 139-195, 3-hr PSI down to 154

#SGhaze update (9pm): 24-hr PSI is 139-195, 3-h...

todayonline.com 28 Sep '15, 12pm

SINGAPORE — The air quality in Singapore is expected to be in the mid-to-high sections of the very unhealthy range over th...

Get respite from #SGHaze: Some libraries open e...

channelnewsasia.com 24 Sep '15, 3pm

SINGAPORE: Hazy conditions in Singapore further deteriorated over Wednesday night, said the National Environment Agency (N...

Haze worsens in Singapore on Friday as 24-hour ...

straitstimes.com 24 Sep '15, 10pm

SINGAPORE- The haze situation worsened on Friday (Sept 25) morning as the Pollutant Standards Index (PSI) hit the hazardou...

#SGHaze: 3-hr PSI rises to 184, while 24-hr PSI...

channelnewsasia.com 28 Sep '15, 12pm

SINGAPORE: The air quality in Singapore could deteriorate further into the Very Unhealthy range through Tuesday (Sep 29), ...

#SGHaze: Air quality remains in unhealthy range on Wednesday, 24-hour PSI at 8am was 120-146

#SGHaze: Air quality remains in unhealthy range...

straitstimes.com 07 Oct '15, 12am

SINGAPORE - Hazy conditions are still prevalent over most parts of Singapore on Wednesday (Oct 7), although air quality ha...

#SGHaze at 6pm: 3-hour PSI dips to 181; 24-hour PSI now 155-199, in Unhealthy range

#SGHaze at 6pm: 3-hour PSI dips to 181; 24-hour...

channelnewsasia.com 01 Oct '15, 10am

SINGAPORE: Hazy conditions in Singapore are expected to persist through Friday (Oct 2), and the air quality could deterior...

#SGhaze update: 24-hour PSI

straitstimes.com 27 Sep '15, 3am

BARCELONA (AFP) - Catalans vote on Sunday in an election dubbed the most important in Spain's recent history, with polls p...

24-hour PSI in unhealthy range at

todayonline.com 30 Sep '15, 12am

However, hazy conditions are expected to persist for the rest of today and tomorrow, said the National Environment Agency ...