Right now
The most recent data we hold from World Air Quality Index arrived 3 hours 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, <1 km from here.
Reported by World Air Quality Index today.
No stronger detection stands among the 6 recorded within 20 km of this point since 25 August 2026 — 3 others scored the same. The last comparable one was on 5 September 2026.
What the source measured
World Air Quality Index reported: AQI 155 (Unhealthy) at Dachang County Government, Langfang (廊坊市大厂县政府)
The air quality index read 155 (Unhealthy) at the Dachang County Government, Langfang (廊坊市大厂县政府) station.
Nearby, since 25 August 2026
- September 5, 2026 · score 29 · 0.0 km
- September 4, 2026 · score 29 · 0.0 km
- September 3, 2026 · score 29 · 12.2 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 40 % 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 | 40% |
| Coordinates | 39.8920, 116.9970 |
| Nearest City | Sanhe (12 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-06T13:00:00.000Z |
| Source | https://aqicn.org/city/@10437 |
Score Breakdown
Technical Details
| Aqi | 155 |
| AqiCategory | Unhealthy |
| StationName | Dachang County Government, Langfang (廊坊市大厂县政府) |
| StationUid | 10437 |
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 Sanhe?
Calamity.live data shows a air quality event with CalamityScore 29/100, near Sanhe (China), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.