Reported by World Air Quality Index today.
It is one of only 3 we have recorded within 20 km of this point since 20 August 2026. The last comparable one was on 21 August 2026.
What the source measured
World Air Quality Index reported: AQI 156 (Unhealthy) at Yongqing County Party Committee Office Building, Langfang (廊坊市永清县委办公楼)
The air quality index read 156 (Unhealthy) at the Yongqing County Party Committee Office Building, Langfang (廊坊市永清县委办公楼) station.
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 45 % 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 | 45% |
| Coordinates | 39.3220, 116.5040 |
| Nearest City | Langfang (28 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-04T21:00:00.000Z |
| Source | https://aqicn.org/city/@9725 |
Score Breakdown
Technical Details
| Aqi | 156 |
| AqiCategory | Unhealthy |
| StationName | Yongqing County Party Committee Office Building, Langfang (廊坊市永清县委办公楼) |
| StationUid | 9725 |
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 Langfang?
Calamity.live data shows a air quality event with CalamityScore 29/100, near Langfang (China), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.