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Haze Updates 2018 / 2019


Karoon
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(edited)

reading by NEA how come different? never even hit 100

 

https://www.haze.gov.sg/

 

https://va.ecitizen.gov.sg/CFP/CustomerPages/NEA_google/displayresult.aspx?MesId=1543232&Source=Google&url=va.ecitizen.gov.sg

 

Question:

 

Why is NEA's air quality data different from the real-time data provided by other websites, such as aqicn.org? Is NEA’s data inaccurate?

 

Answer:

 

The ambient air in Singapore is monitored through a comprehensive network of air monitoring stations located in different parts of Singapore. These monitoring stations measure concentration levels of particulate matter (PM10), fine particulate matter (PM2.5), sulphur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO). These six pollutant parameters determine the PSI.

 

Singapore uses the Pollutant Standards Index or PSI as the official national reporting system for air quality. PSI is computed based on a 24-hour average of the concentration levels of the abovementioned pollutants. PM2.5 is the dominant pollutant during transboundary haze episodes. The website aqicn.org in fact relies on the 24-hour average PM2.5 concentration data that is posted every hour by NEA. However, aqicn.org does not follow Singapore’s system of computing PSI. Instead, it computes an air quality index using the US Environmental Protection Agency‘s (USEPA) Air Quality Index (AQI) reporting system.

 

There are no international guidelines on how air quality indices should be computed. Countries adopt different index systems based on their local needs and circumstances. While Singapore’s PSI is modelled after the USEPA AQI national reporting system, it is not identical to the USEPA AQI. The only country that adopts the USEPA AQI is the US. It is therefore incorrect to compare the PSI with other air quality indices which are calculated using different methodologies. 

 

==============================================================================

 

I'm the type who don't like to rely solely on govt's numbers. Trust issue.

Edited by Weez911
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Woke up this morning I can smell it quite badly at Pasir Ris area

Exactly right.. so the NEA figures are rubbish.

 

Even their time is not accurate

 

Screenshot at 8.01am, reading as at 7am

post-1798-0-94392700-1552016354_thumb.png

 

Screenshot at 8.11am, reading is backtrack to 6am

post-1798-0-66708800-1552016437_thumb.png

post-1798-0-80294000-1552016506_thumb.png

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Moderator

I use my nose

https://va.ecitizen.gov.sg/CFP/CustomerPages/NEA_google/displayresult.aspx?MesId=1543232&Source=Google&url=va.ecitizen.gov.sg

 

Question:

 

Why is NEA's air quality data different from the real-time data provided by other websites, such as aqicn.org? Is NEAâs data inaccurate?

 

Answer:

 

The ambient air in Singapore is monitored through a comprehensive network of air monitoring stations located in different parts of Singapore. These monitoring stations measure concentration levels of particulate matter (PM10), fine particulate matter (PM2.5), sulphur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO). These six pollutant parameters determine the PSI.

 

Singapore uses the Pollutant Standards Index or PSI as the official national reporting system for air quality. PSI is computed based on a 24-hour average of the concentration levels of the abovementioned pollutants. PM2.5 is the dominant pollutant during transboundary haze episodes. The website aqicn.org in fact relies on the 24-hour average PM2.5 concentration data that is posted every hour by NEA. However, aqicn.org does not follow Singaporeâs system of computing PSI. Instead, it computes an air quality index using the US Environmental Protection Agencyâs (USEPA) Air Quality Index (AQI) reporting system.

 

There are no international guidelines on how air quality indices should be computed. Countries adopt different index systems based on their local needs and circumstances. While Singaporeâs PSI is modelled after the USEPA AQI national reporting system, it is not identical to the USEPA AQI. The only country that adopts the USEPA AQI is the US. It is therefore incorrect to compare the PSI with other air quality indices which are calculated using different methodologies.

 

==============================================================================

 

I'm the type who don't like to rely solely on govt's numbers. Trust issue.

Knn

 

Say like dun say....

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(edited)

Is our foreign minister still on talking terms with his malaysian counterpart?

 

Will the haze go away on its own without any action taken? How long will that take?

Edited by Weez911
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