Right now
The most recent data we hold from World Air Quality Index arrived 28 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 4 km from here.
Reported by World Air Quality Index today.
It is one of only 4 we have recorded within 20 km of this point since 21 March 2026. The last comparable one was on 20 September 2026. 5 more were recorded here in the fortnight before it.
What the source measured
World Air Quality Index reported: AQI 154 (Unhealthy) at Xiyuan, Jiujiang (九江西园)
The air quality index read 154 (Unhealthy) at the Xiyuan, Jiujiang (九江西园) station.
Urban PEI: 195,769 within a heuristic 5 km radius; not unique people.
Nearby, since 21 March 2026
- September 25, 2026 · score 50 · 4.0 km
- September 20, 2026 · score 50 · 4.0 km
- September 13, 2026 · 5.3 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 50 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) | 50 / 100 |
| Legacy data-support index | 0.68/1 |
| Coordinates | 29.7292, 115.9880 |
| Nearest City | Jiujiang (3 km) |
| Urban exposure index (PEI) | 195.8K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-25T19:00:00.000Z |
| Source | https://aqicn.org/city/@3648 |
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: 2026-09-25T19:00:00.000Z.
First archived: 2026-09-25T17:13:25.388Z. Material modification: 2026-09-25T19:41:41.061Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-25T19:41:41.061Z · data_change
Index 50 → 50; severity medium → medium; version 5 → 5.
2026-09-25T18:42:02.343Z · data_change
Index 50 → 50; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Aqi | 154 |
| AqiCategory | Unhealthy |
| StationName | Xiyuan, Jiujiang (九江西园) |
| StationUid | 3648 |
| 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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