In Preparation of Haze 2016

The haze period of 2015 was in June - October. This year, to prepare ourselves for the haze (that hopefully will never comes), NEA has decided to phase out the 3-Hour PSI Reading in replacement of the 1-Hour PM2.5 Reading. The 1-Hour PM2.5 Reading will range from normal, elevated, high to very high or the Roman numericals I to IV.

A snippet of the poster created by NEA talking about the 1-Hour PM2.5 in more details. The full poster can be found here.

According to NEA, 1-Hour PM2.5 will provide a more accurate reading to indicate air quality compared to the 3-Hour PSI Reading. This will also put us in sync with the World Air Quality Index Project standards which uses the 1-Hour PM2.5 and not the 3-Hour PSI reading to measure air quality.

In addition, do note that when you refer to the air quality at haze.sg, there are several indicators reflected on the webpage such as 3-Hour PM2.5, 24-Hour PM2.5 etc. These readings are not as accurate as the 1-Hour PM2.5 reading as they may not be indicative of the current air quality conditions.

With this new update in NEA, we foresee that PSI may be phased out eventually in replacement of AQI, the standards used by the World Air Quality Index Project.

For now, let's wait and see and pray that there will not be a haze 2016.