Right now
The most recent data we hold from World Air Quality Index arrived 5 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
Reported by World Air Quality Index today.
It is the 6th strongest of the 9 detections recorded within 20 km of this point since 6 May 2026. The last comparable one was on 25 September 2026. 12 more were recorded here in the fortnight before it.
What the source measured
World Air Quality Index reported: AQI 188 (Unhealthy) at Central, Singapore
The air quality index read 188 (Unhealthy) at the Central, Singapore station.
Urban PEI: 50,321 within a heuristic 5 km radius; not unique people.
At this point we have recorded a air quality index between 151 and 191, over 12 readings since 26 September 2026. Today's reading sits 93% of the way up that range.
Nearby, since 6 May 2026
- September 25, 2026 · score 46 · 0.0 km
- September 19, 2026 · score 46 · 0.0 km
- September 14, 2026 · score 46 · 0.0 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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. 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 |
| Legacy data-support index | 0.68/1 |
| Coordinates | 1.3667, 103.8000 |
| Nearest City | Saujana (4 km) |
| Urban exposure index (PEI) | 50.3K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-26T18:00:00.000Z |
| Source | https://aqicn.org/city/@1666 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: waqi. Occurrence: 2026-09-26T18:00:00.000Z.
First archived: 2026-09-26T04:28:38.218Z. Material modification: 2026-09-26T18:42:31.668Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-26T18:42:31.668Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T17:43:00.757Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T16:38:12.439Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T15:38:42.645Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T14:39:19.170Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T13:40:09.378Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T13:07:58.479Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T11:31:15.119Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T11:04:24.853Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T08:02:11.920Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-26T05:27:20.073Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Aqi | 188 |
| AqiCategory | Unhealthy |
| StationName | Central, Singapore |
| StationUid | 1666 |
| Network | official |
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.
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