Air Quality in Piedras Negras, Mexico
1 — recorded here, since 16 August 2026
1 in the last 30 days. Most recent: 16 August 2026 (16 days ago).
Recent events
- Very Unhealthy Air Quality (AQI 265)16 August 202623:00 UTChighCS 35
1 — recorded here, since 16 August 2026
1 in the last 30 days. Most recent: 16 August 2026 (16 days ago).