Reported by World Air Quality Index today.
The last comparable one was on 16 August 2026.
What the source measured
World Air Quality Index reported: AQI 153 (Unhealthy) at No. 4 middle school, Yibin (宜宾宜宾四中)
The air quality index read 153 (Unhealthy) at the No. 4 middle school, Yibin (宜宾宜宾四中) station.
An estimated 54,849 people live within 5 km of this point.
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.
Event Data
| Type | Air quality |
| Severity | medium |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 66% |
| Coordinates | 28.7867, 104.6061 |
| Nearest City | Yibin (4 km) |
| Population Exposed | 54.8K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-01T14:00:00.000Z |
| Source | https://aqicn.org/city/@3613 |
Score Breakdown
Technical Details
| Aqi | 153 |
| AqiCategory | Unhealthy |
| StationName | No. 4 middle school, Yibin (宜宾宜宾四中) |
| StationUid | 3613 |
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 10 February 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 Yibin?
Calamity.live data shows a air quality event with CalamityScore 46/100, near Yibin (China), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.