According to National Environment Agency (NEA) official website, the 1-hour PM2.5 level in the west of Singapore on Oct. 19, 2015, at 10pm is 442:

The 1-hour PM2.5 level in the South of Singapore is equally poor at 299.

If the 1-hour PM2.5 level  in the West continues for 23 more hours, it will be viewed as "Hazardous".

According to the realistic PSI reading, it is 461:

The television stations took a while longer to compute the 3 hr PSI.

In fact, they left it blank for at least 15 minutes:

They finally updated the 3 hour PSI at 2315 Hrs:

Related articles:

This is what it looked like in Singapore when PM2.5 levels hit the fans

Respite for the west side of Singapore as PM2.5 levels drop by almost half at midnight on Oct 20

Realistic hourly PSI readings that reflect the haze level you see available at this website

These Singaporean wedding couples really made the most of the haze

Top photo via

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