Right now
The most recent data we hold from World Air Quality Index arrived 3 hours ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 7 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 23 May 2026. The last comparable one was on 7 September 2026. 5 more were recorded here in the fortnight before it.
What the source measured
World Air Quality Index reported: AQI 152 (Unhealthy) at No.2 middle school, Changde (常德市二中)
The air quality index read 152 (Unhealthy) at the No.2 middle school, Changde (常德市二中) station.
Nearby, since 23 May 2026
- September 11, 2026 · score 59 · 6.8 km
- September 7, 2026 · score 59 · 6.8 km
- September 6, 2026 · score 59 · 6.8 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 29 out of 100, at 46 % 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) | 29 / 100 |
| Our confidence | 46% |
| Coordinates | 28.9703, 111.6975 |
| Nearest City | Changde (7 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-11T19:00:00.000Z |
| Source | https://aqicn.org/city/@3866 |
Score Breakdown
Technical Details
| Aqi | 152 |
| AqiCategory | Unhealthy |
| StationName | No.2 middle school, Changde (常德市二中) |
| StationUid | 3866 |
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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