Haze Updates 2018 / 2019

[inlinesix]

1 minute ago, 13177 said:

Heard west and north area raining.

It was raining in Woodland around 8+am

[13177]

3 minutes ago, Davidtch said:

It was raining in Woodland around 8+am

So Woodlands now rain stopped liao? Hopefully the rain can help to clear away a bit of the haze.

[inlinesix]

Just now, 13177 said:

So Woodlands now rain stopped liao? Hopefully the rain can help to clear away a bit of the haze.

When i left at 9am, rain stopped.

[Kyrios]

Formula One folks cum down will say what the fish...first race to be cancelled due to smog?

Anyway NEA PSI readings always seem to be way much lower...i think my own eyes are better judge of the PSI..😄

[Yewheng]

Just now morning sky was not too bad, then come late morning the sky becoming less clear, then the peak is at around 1.50pm where visibility is around 3km. Now the sky is clearing up. 

 

When the visibility was bad, when pax open car door, can immediately smell the burning smell. Its that bad. 

[Adrianli]

Haze is very bad today.

[Count-Bracula]

My car very dusty. 

The haze very bad here in western part of the island.

Was at the park earlier, still got people jogging!

Edited September 14, 2019 by Count-Bracula

[Carbon82]

24 PSI reading breached 100 (unhealthy range) as of 4pm. Avoid strenuous outdoor activities. Stay indoor and turn on the air purifier if you have it.

 

Hourly readings look even worse, hitting >200 (very unhealthy range) in the Western part of the island.

[Ody_2004]

1 hour ago, Kyrios said:

Anyway NEA PSI readings always seem to be way much lower...i think my own eyes are better judge of the PSI..😄

Just like unemployment rate mah.. need to present in such a way that won't cause alarm to anyone! whahahahahahhaha

I just check SG weather app.. 180 PSI wor...

[13177]

Haze suddenly become bad. 😓

[Ody_2004]

2 minutes ago, 13177 said:

Haze suddenly become bad. 😓

208 in the west wor...

[Tohto]

NEA PSI is 24 hrs average,  it will take a long long time to see it get into higher number. 

[Dafansu]

From their facebook page 

 

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

The ambient air in Singapore is monitored through a comprehensive network of air monitoring sensors across the island. These sensors measure the level of six pollutants: particulate matter (both PM10 and PM2.5), sulphur dioxide, nitrogen dioxide, ozone and carbon monoxide. These concentrations are then used to compute the Pollutant Standards Index (PSI) over a rolling 24-hour period. Other than the PSI, the 1-hour PM2.5 concentrations are also made available as 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 United States Environmental Protection Agency (US EPA) 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.

More information about the monitoring of Singapore’s Air Quality can be found here: bit.ly/SingaporeAirQuality

[Note: Figures in the image are for illustration purposes only. Please refer to the myENV app, our website (www.nea.gov.sg) or the haze microsite (www.haze.gov.sg) for Air Quality readings]

[Tohto]

On 9/13/2019 at 4:21 PM, 13177 said:

Heard from radio that today afternoon got rain, but so far no see a single drop of rain le?

Forecast already change to no rain. 

Will be dry and hot next few days lah.

Edited September 14, 2019 by Tohto

[Kyrios]

7 minutes ago, Tohto said:

Forecast already change to no rain. 

Will be dry and hot next few days lah.

Advise everyone to trim their water usage..this is one long dry spell..conserve water..

[PSP415]

34 minutes ago, Dafansu said:

From their facebook page 

 

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

The ambient air in Singapore is monitored through a comprehensive network of air monitoring sensors across the island. These sensors measure the level of six pollutants: particulate matter (both PM10 and PM2.5), sulphur dioxide, nitrogen dioxide, ozone and carbon monoxide. These concentrations are then used to compute the Pollutant Standards Index (PSI) over a rolling 24-hour period. Other than the PSI, the 1-hour PM2.5 concentrations are also made available as 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 United States Environmental Protection Agency (US EPA) 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.

More information about the monitoring of Singapore’s Air Quality can be found here: bit.ly/SingaporeAirQuality

[Note: Figures in the image are for illustration purposes only. Please refer to the myENV app, our website (www.nea.gov.sg) or the haze microsite (www.haze.gov.sg) for Air Quality readings]

Thanks! Great info.

Safe ride 

Cheers 

[Angcheek]

this NEA ....... after so many yrs still never upgrade their system .

[13177]

2 hours ago, Ody_2004 said:

208 in the west wor...

Seems like west haze situation is the worst.