Air quality in Smyrna estimated
Tennessee, United States. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.
≈ 5 µg/m³
Good
Estimated PM2.5, 7-day average to 2026-09-30, about 0.3× the WHO 24-hour guideline. 30-day average ≈ 14 µg/m³.
Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 1.13 to match 10 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.
Last 30 days, estimated
Daily means, UTC days. Dashed line: WHO 24-hour guideline (15 µg/m³).
Measured cities nearby
| City | Distance | 7-day average |
|---|---|---|
| Nashville | 31 km | 4.4 µg/m³ |
| Hendersonville | 37 km | 3.8 µg/m³ |
| Columbia | 62 km | 3.9 µg/m³ |
| Cookeville | 94 km | 3.8 µg/m³ |
| Clarksville | 97 km | 4.1 µg/m³ |
| Huntsville | 139 km | 4.8 µg/m³ |
Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. How estimates are made.