Air Quality near Piedras Negras
Reported by World Air Quality Index 16 days ago.
It is one of only 2 we have recorded within 20 km of this point since 7 July 2026. The last comparable one was on 7 July 2026.
What the source measured
World Air Quality Index reported: AQI 265 (Very Unhealthy) at Centro de Rehabilitación DIF, Piedras Negras, Coahuila, Mexico
The air quality index read 265 (Very Unhealthy) at the Centro de Rehabilitación DIF, Piedras Negras, Coahuila, Mexico station.
An estimated 100,770 people live within 5 km of this point.
How we know
One source: World Air Quality Index. Not yet confirmed by a second, independent source.
Our own score for this event is 35 out of 100, at 62 % 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 | High |
| Calamity Score (ours) | 35 / 100 |
| Our confidence | 62% |
| Coordinates | 28.7077, -100.5265 |
| Nearest City | Piedras Negras (1 km) |
| Population Exposed | 100.8K within 5 km |
| Impact Tier | severe |
| Timestamp | 2026-08-16T23:00:00.000Z |
| Source | https://aqicn.org/city/@9160 |
Score Breakdown
Technical Details
| Aqi | 265 |
| AqiCategory | Very Unhealthy |
| StationName | Centro de Rehabilitación DIF, Piedras Negras, Coahuila, Mexico |
| StationUid | 9160 |
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 Piedras Negras?
Calamity.live data shows a air quality event with CalamityScore 35/100, near Piedras Negras (Mexico), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.