Singapore Haze Psi
In short
The Pollutant Standards Index (PSI) in Singapore is currently facing renewed threats of unhealthy levels following a brief period of improved air quality. While some regions saw moderate levels on 20 October, recent trends show a return of high PM2.5 concentrations.
In plain words
PSI is a number used to measure how clean or dirty the air is. A higher number means the air is more polluted and dangerous to breathe. It helps people decide if they should stay indoors to protect their health.
A simple example
If the PSI reading is 150, the air is considered unhealthy, and you might feel a cough or itchy eyes. If it is 50, the air is considered good and safe for outdoor exercise.
Why it matters
High PSI levels cause significant health risks and economic disruption, such as reduced footfall for food and beverage businesses. The government also uses these levels to coordinate legal actions against those responsible for the smoke.
Easy to mix up
Do not confuse PSI with PM2.5; PSI is the overall index score, while PM2.5 refers to the specific size of the tiny dust particles being measured.
Sources
- TikToker apologises after saying ‘good luck’ to S’poreans as she goes overseas amid haze, draws flak for ‘gloating’
- Singapore Haze Impact: F&B Businesses Struggle as Customer Footfall Falls
- Singapore is ready to use every lever at its disposal to hold those responsible for haze to account
- Haze threat looms over Singapore again after brief three-day respite