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SINGAPORE - The 3-hour Pollutant Standards Index (PSI) stood at 326 as of 10am today.
This is a steady climb from the 180 reading at 5am today.
The National Environmental Agency (NEA) has started to provide the 24-hour PSI averages at hourly intervals. Previously, the 24-hour averages were updated three times a day at 8am, 12 noon and 4pm.
The 24 hour average PSI at 10am was in the 176 to 235 range, a slight decrease from 179 to 246 at 8am. The PM2.5 concentration, which measures very fine particles, was 233 to 297 micrograms per cubic metre.
In an advisory issued yesterday, NEA said that hazy conditions are still expected over the weekend, as dry conditions and winds from the southwest or west are likely to persist.
The 24-hour PSI for the rest of the day is expected to be in the 'very unhealthy' band of 201 to 300, NEA said in a June 22 forecast.
HEALTH ADVISORY
Healthy people
- Avoid prolonged/strenuous outdoor physical exertion
- Wear N95 mask if prolonged and strenuous outdoor activity is unavoidable
Elderly, pregnant women and children
- Avoid all outdoor activity
- Wear N95 mask if prolonged outdoor activity is unavoidable
People with chronic medical conditions especially lung or heart disease
- Avoid all outdoor activity
- Wear N95 mask if prolonged outdoor activity is unavoidable
Those who are not feeling well are advised to seek medical attention.
Employers are advised to provide suitable respirators to all employees carrying out outdoor work. They should also deploy susceptible employees to work indoors, preferably doing work which is not physically strenuous.
MOH has activated the hospitals to prepare for the anticipated increase in the number of cases of asthma, bronchitis and conjunctivitis.
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