On Sunday (Aug 4), the National Environment Agency (NEA) released its first daily haze advisory for the year, that The Republic would experience slightly hazy conditions in the next few days.
It said that this could happen if more hot spot activities occur in Sumatra and the winds change to blow from the south-west.
Dry conditions have been forecasted to persist in Sumatra over the next few days, and prevailing winds in the region are expected to continue blowing from the south-east or south.
A total of 16 hot spots were detected in Sumatra on Sunday, and haze from persistent hot spots continue to be observed in Riau and Jambi provinces of Sumatra.
On Sunday afternoon, the conditions in Singapore were sometimes windy with brief showers over a few areas.
Prevailing winds have been blowing from the south to south-east and the air quality has been in the moderate range. The air quality is forecasted to be fair for the rest of the day with prevailing winds blowing from the south-east or south.
At 9 pm on Sunday, the 24-hour Pollutant Standards Index (PSI) range was 53 to 56, in the moderate range.
For Monday, the 24-hour PSI is expected to be in the good to moderate range. The one-hour PM2.5 concentration, which measures the concentration of tiny particles less than 2.5 micrometres in diameter, is expected to be in Band 1 which is in the normal range.
It is forecasted that prevailing winds over Singapore will blow from the south-east or south, occasionally windy with passing showers.
NEA is monitoring the haze and will provide updates when necessary.
The health impact of the haze will depend on an individual’s health status, the length and intensity of outdoor activity as well as the PSI level. Thus to limit the effects of exposure to the haze, one can reduce the outdoor activities and physical exertion.
From NEA, “Given the air quality forecast for the next 24 hours, everyone can continue with normal activities. Individuals who are not feeling well, especially the elderly and children, and those with chronic heart or lung conditions, should seek medical attention”.
As stated by the agency, since the main pollutant during the haze season is PM2.5, the public should use the one-hour PM2.5 concentration reading as an indicator for immediate activities such as going for a jog.
Taken from NEA website: https://www.haze.gov.sg/#3