Reported by World Air Quality Index today.
It is the 3rd strongest of the 8 detections recorded within 20 km of this point since 27 June 2026. The last comparable one was on 3 September 2026.
What the source measured
World Air Quality Index reported: AQI 165 (Unhealthy) at Nanzheng big Hekan Waterworks, Hanzhong (汉中南郑大河坎水厂)
The air quality index read 165 (Unhealthy) at the Nanzheng big Hekan Waterworks, Hanzhong (汉中南郑大河坎水厂) station.
An estimated 20,198 people live within 5 km of this point.
Nearby, since 27 June 2026
- September 3, 2026 · score 55 · 4.3 km
- September 4, 2026 · score 50 · 9.1 km
- June 27, 2026 · score 35 · 9.1 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 41 out of 100, at 66 % 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) | 41 / 100 |
| Our confidence | 66% |
| Coordinates | 33.0323, 107.0070 |
| Nearest City | Hanzhong (5 km) |
| Population Exposed | 20.2K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T14:00:00.000Z |
| Source | https://aqicn.org/city/@7850 |
Score Breakdown
Technical Details
| Aqi | 165 |
| AqiCategory | Unhealthy |
| StationName | Nanzheng big Hekan Waterworks, Hanzhong (汉中南郑大河坎水厂) |
| StationUid | 7850 |
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 Hanzhong?
Calamity.live data shows a air quality event with CalamityScore 41/100, near Hanzhong (China), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.