The National Environment Agency (NEA) has spoken up about the deteriorating air quality and they bring news that you won't like to hear.
For the rest of the already murky Friday, hazy conditions are expected to persist over Singapore. 24-hour Pollutant Standards Index (PSI) levels have increased since this morning, and NEA expects it to enter the low end of the Unhealthy range should winds continue blowing in from the west. Currently, those staying in the west side of the island (Jurong, Clementi, Boon Lay, etc) have been hit the hardest in the past several hours.