top shots taken on Monday (6/17), bottom shots taken (6/19). Clark Quay
Excerpt from Straits Times:
SINGAPORE’S air is now “hazardous” as the Pollutant Standards Index soared to 321 at 10pm, the worst reading in its history.
Air becomes “hazardous” when the index passes 300. The previous worst reading was 226, in 1997.
|PSI||Descriptor||General Health Effects|
|0 – 50||Good||None|
|51 – 100||Moderate||Few or none for the general population|
|101 – 200||Unhealthy||Mild aggravation of symptoms among susceptible persons i.e. those with underlying conditions such as chronic heart or lung ailments; transient symptoms of irritation e.g. eye irritation, sneezing or coughing in some of the healthy population.|
|201 – 300||Very Unhealthy||Moderate aggravation of symptoms and decreased tolerance in persons with heart or lung disease; more widespread symptoms of transient irritation in the healthy population.|
|301 – 400||Hazardous||Early onset of certain diseases in addition to significant aggravation of symptoms in susceptible persons; and decreased exercise tolerance in healthy persons.|
|Above 400||Very Hazardous||PSI levels above 400 may be life-threatening to ill and elderly persons. Healthy people may experience adverse symptoms that affect normal activity.|