Reported by World Air Quality Index today.
It is the 3rd strongest of the 7 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 3 September 2026.
What the source measured
World Air Quality Index reported: AQI 173 (Unhealthy) at Rue Monnier
The air quality index read 173 (Unhealthy) at the Rue Monnier station.
An estimated 101,496 people live within 5 km of this point.
This is the lowest air quality index we have recorded at this point, over 12 readings since 4 September 2026 — the previous range was 173 to 500.
Nearby, since 15 March 2026
- September 3, 2026 · score 64 · 0.0 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 50 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) | 50 / 100 |
| Our confidence | 66% |
| Coordinates | 43.7251, 7.2723 |
| Nearest City | Saint-Roch (2 km) |
| Population Exposed | 101.5K within 5 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T02:06:59.000Z |
| Source | https://aqicn.org/city/@-1117048 |
Score Breakdown
Technical Details
| Aqi | 173 |
| AqiCategory | Unhealthy |
| StationName | Rue Monnier |
| StationUid | -1117048 |
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 Saint-Roch?
Calamity.live data shows a air quality event with CalamityScore 50/100, near Saint-Roch (France), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.