Reported by World Air Quality Index 7 days ago.
It is the 3rd strongest of the 12 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
World Air Quality Index reported: AQI 154 (Unhealthy) at Hà Nội: ĐHBK cổng Parabol đường Giải Phóng (KK)
The air quality index read 154 (Unhealthy) at the Hà Nội: ĐHBK cổng Parabol đường Giải Phóng (KK) station.
An estimated 4,643,509 people live within 5 km of this point.
Nearby, since 12 March 2026
- September 3, 2026 · score 50 · 6.8 km
- September 2, 2026 · score 50 · 8.8 km
- August 27, 2026 · score 35 · 8.8 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 44 out of 100, at 63 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Air Quality |
| Severity | Medium |
| Calamity Score (ours) | 44 / 100 |
| Our confidence | 63% |
| Coordinates | 21.0052, 105.8418 |
| Nearest City | Hai Bà Trưng (1 km) |
| Population Exposed | 4.6M within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-08-27T06:00:00.000Z |
| Source | https://aqicn.org/city/@-476341 |
Score Breakdown
Technical Details
| Aqi | 154 |
| AqiCategory | Unhealthy |
| StationName | Hà Nội: ĐHBK cổng Parabol đường Giải Phóng (KK) |
| StationUid | -476341 |
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 Hai Bà Trưng?
Calamity.live data shows a air quality event with CalamityScore 44/100, near Hai Bà Trưng (Vietnam), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.