Reported by World Air Quality Index today.
It is the 4th strongest of the 10 detections recorded within 20 km of this point since 6 May 2026. Another comparable one was recorded here earlier the same day.
What the source measured
World Air Quality Index reported: AQI 154 (Unhealthy) at Central, Singapore
The air quality index read 154 (Unhealthy) at the Central, Singapore station.
An estimated 50,321 people live within 5 km of this point.
This is the lowest air quality index we have recorded at this point, over 12 readings since 4 September 2026 — the previous range was 154 to 157.
Nearby, since 6 May 2026
- September 3, 2026 · score 46 · 0.0 km
- September 3, 2026 · score 41 · 11.6 km
- September 3, 2026 · score 50 · 13.2 km
How we know
One source: World Air Quality Index. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 66 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Air Quality |
| Severity | Medium |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 66% |
| Coordinates | 1.3667, 103.8000 |
| Nearest City | Saujana (4 km) |
| Population Exposed | 50.3K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T02:00:00.000Z |
| Source | https://aqicn.org/city/@1666 |
Score Breakdown
Technical Details
| Aqi | 154 |
| AqiCategory | Unhealthy |
| StationName | Central, Singapore |
| StationUid | 1666 |
Safety Information
When air quality is hazardous: stay indoors with windows closed, and run a filtered air purifier if you have one. Avoid outdoor exercise. Children, older adults and anyone with heart or lung conditions are affected first and worst — an N95 respirator helps outdoors, a cloth mask does not.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens near Saujana?
Calamity.live data shows a air quality event with CalamityScore 46/100, near Saujana (Singapore), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.