Air quality near Bonn Hardtberg
Reported by World Air Quality Index today.
The last comparable one was on 29 August 2026.
What the source measured
World Air Quality Index reported: AQI 402 (Hazardous) at Bonn
The air quality index read 402 (Hazardous) at the Bonn station.
An estimated 49,686 people live within 5 km of this point.
How we know
Confirmed by 3 independent sources, including World Air Quality Index.
Our own score for this event is 19 out of 100, at 72 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Air quality |
| Severity | critical |
| Calamity Score (ours) | 19 / 100 |
| Our confidence | 72% |
| Coordinates | 50.7158, 7.0431 |
| Nearest City | Bonn Hardtberg (2 km) |
| Population Exposed | 49.7K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-08-31T20:32:14.000Z |
| Source | https://aqicn.org/city/@-576466 |
Score Breakdown
Technical Details
| Aqi | 402 |
| AqiCategory | Hazardous |
| StationName | Bonn |
| StationUid | -576466 |
| Sensor Community Pm25Max | 72.2 |
| Sensor Community Pm25Avg | 72.2 |
| Sensor Community SensorCount | 1 |
| Sensor Community AqiCategory | Unhealthy |
| Sensor Community ClusterKey | 50.8_7.1 |
| MergedSources | [{"id":"sensor_community_50.9_6.9","source":"sensor_community","severity":"critical","severityValue":98.9966,"timestamp":1788201310000,"latitude":50.916,"longitude":6.888999999999999},{"id":"sensor_community_50.8_7.1","source":"sensor_community","severity":"medium","severityValue":42.15,"timestamp":1788201288000,"latitude":50.824,"longitude":7.134}] |
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.
Calamity.live data shows a air quality event with CalamityScore 19/100, near Bonn Hardtberg (Germany), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.