In Singapore, the severity of the haze is measured using the Pollutants Standards Index (PSI). The National Environmental Agency (NEA) has begun issuing air pollution health warnings after the PSI reached an "unhealthy" reading of 155 on 17th June 2013. The PSI reading has then hit a "hazardous" level of 401 on 21st June 12pm -- the worst in Singapore's history.
What the PSI readings meanThe PSI readings (3-hourly average) indicate air quality at a given time:
|PSI value||Air quality|
|0 to 50||Good|
|51 to 100||Moderate|
|101 to 200||Unhealthy|
Reduce vigorous outdoor activity
|201 to 300||Very unhealthy|
Avoid vigorous outdoor activity.
|301 and above||Hazardous|
Avoid unnecessary outdoor activity.
Breathing in an excess of the air pollutants can increase one's risk of developing respiratory problems, including bacterial and viral infections, as well as exacerbate existing conditions such as heart and lung diseases, asthma and eczema.
Follow these tips to protect you and your family from the hazeStay indoors as much as possible. Children, older adults (aged 65 and above) and people with heart and lung diseases are advised to remain indoors and keep activity levels low.
Keep all doors and windows closed and use the air-conditioner.
Use an air purifier to remove pollutants.
Don't smoke or allow anyone else to smoke at home.
Drink plenty of water to help flush out any toxins that may have entered your system
Wet mop or use a vacuum cleaner in your house and indoor areas, instead of using a broom.
Wear a mask to cover your nose and mouth when you need to go out, especially when the PSI level is in the "unhealthy" range. Look for certified grade N95 masks that are able to keep out fine haze particles in the air.
If you drive, roll up the windows and turn on the air-con.