Sion
| other name | Sitten |
| country |
 Switzerland
|
| canton | Valais |
| Altitude | 482 a.s.l. |
| coordinates | 46° 13.2' N 7° 19.8' E |
Air pollutants Sion
Ozone (O₃)
| ozone | |
|---|---|
| µg/m³ | |
| 9. Aug. | 110 |
| 10. Aug. | 112 |
| 11. Aug. | 128 |
| 12. Aug. | 129 |
| 13. Aug. | 126 |
| 14. Aug. | 104 |
| 15. Aug. | 94 |
data source: Nationales Beobachtungsnetz für Luftfremdstoffe (NABEL)
Particulate matter (PM₁₀)
| particulate matter | |
|---|---|
| µg/m³ | |
| 9. Aug. | 12 |
| 10. Aug. | 15 |
| 11. Aug. | 16 |
| 12. Aug. | 32 |
| 13. Aug. | 13 |
| 14. Aug. | 10 |
| 15. Aug. | 10 |
Nitrogen dioxide (NO₂)
| nitrogen dioxide | |
|---|---|
| µg/m³ | |
| 9. Aug. | 15 |
| 10. Aug. | 17 |
| 11. Aug. | 21 |
| 12. Aug. | 24 |
| 13. Aug. | 15 |
| 14. Aug. | 17 |
| 15. Aug. | 12 |