What do NEA's PM2.5 bands and PSI bands mean?
1-hour PM2.5: Normal 0–55, Elevated 56–150, High 151–250, Very High 251+ µg/m³. 24-hour PSI: Good 0–50, Moderate 51–100, Unhealthy 101–200, Very unhealthy 201–300, Hazardous above 300.
Singapore now
Check your area →45 µg/m³ · Normal (1-hour PM2.5, model estimate, not official)
What NEA advises
For the 1-hour bands: normal activities; reduce strenuous outdoor activity; avoid strenuous outdoor activity; minimise all outdoor activity, each for the next hour. Vulnerable people should avoid strenuous activity from Band 2 up.
Related guides
Related questions
Sources
- NEA 1-hour PM2.5 readings (Singapore) — National Environment Agency (NEA), Singapore · official site · API / docs
- NEA 24-hour PSI (Singapore) — National Environment Agency (NEA), Singapore · official site · API / docs
- haze.gov.sg regional haze situation and outlook — NEA, drawing on the ASEAN Specialised Meteorological Centre · official site