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 | |
| 16. Mar. | 97 |
| 17. Mar. | 77 |
| 18. Mar. | 102 |
| 19. Mar. | 93 |
| 20. Mar. | 77 |
| 21. Mar. | 73 |
| 22. Mar. | 90 |
data source: Nationales Beobachtungsnetz für Luftfremdstoffe (NABEL)
Particulate matter (PM₁₀)
| particulate matter | |
|---|---|
| µg/m³ | |
| 16. Mar. | 12 |
| 17. Mar. | 16 |
| 18. Mar. | 13 |
| 19. Mar. | 10 |
| 20. Mar. | 7 |
| 21. Mar. | 10 |
| 22. Mar. | 14 |
Nitrogen dioxide (NO₂)
| nitrogen dioxide | |
|---|---|
| µg/m³ | |
| 16. Mar. | 28 |
| 17. Mar. | 30 |
| 18. Mar. | 32 |
| 19. Mar. | 20 |
| 20. Mar. | 15 |
| 21. Mar. | 22 |
| 22. Mar. | 25 |