Air Quality in Jefferson, United States
1 — recorded here, since 8 August 2026
1 in the last 30 days. Most recent: 8 August 2026 (23 days ago).
Recent events
- Hazardous Air Quality (AQI 500)8 August 202606:00 UTCcriticalCS 14
1 — recorded here, since 8 August 2026
1 in the last 30 days. Most recent: 8 August 2026 (23 days ago).