| Poussières fines (PM10) : moyennes journalières en µg/m3 | ||||
| Date | Fribourg: Parc de Pérolles | Fribourg: Chamblioux | Bulle: Rue de Vevey | Payerne (NABEL) |
| 28.06.2021 | 13 | 13 | 12 | |
| 29.06.2021 | 7 | 8 | 7 | |
| 30.06.2021 | 5 | 5 | 6 | 5 |
| 01.07.2021 | 8 | 7 | 7 | 6 |
| 02.07.2021 | 10 | 9 | 11 | 8 |
| 03.07.2021 | 9 | 12 | 10 | 12 |
| 04.07.2021 | 8 | 9 | 7 | 10 |
| 05.07.2021 | 8 | 6 | 8 | 5 |
| 06.07.2021 | 9 | 9 | 10 | 8 |
| 07.07.2021 | 7 | 6 | 6 | 6 |
| 08.07.2021 | 5 | 7 | 6 | 8 |
| 09.07.2021 | 9 | 9 | 9 | 8 |
| 10.07.2021 | 9 | 10 | 9 | 10 |
| 11.07.2021 | 8 | 8 | 8 | 8 |
| 12.07.2021 | 13 | 14 | 14 | 12 |
| 13.07.2021 | 6 | 6 | 5 | 6 |
| 14.07.2021 | 5 | 6 | 5 | 8 |
| 15.07.2021 | 3 | 6 | 4 | 5 |
| 16.07.2021 | 6 | 8 | 7 | 7 |
| 17.07.2021 | 12 | 14 | 11 | 12 |
| 18.07.2021 | 16 | 17 | 14 | 14 |
| 19.07.2021 | 18 | 19 | 19 | 17 |
| 20.07.2021 | 19 | 20 | 21 | 18 |
| 21.07.2021 | 25 | 26 | 24 | 23 |
| 22.07.2021 | 22 | 24 | 24 | 29 |
| 23.07.2021 | 27 | 28 | 24 | 30 |
| 24.07.2021 | 19 | 22 | 22 | 20 |
| 25.07.2021 | 11 | 12 | 11 | 11 |
| 26.07.2021 | 10 | 12 | 12 | 10 |
| 27.07.2021 | 13 | 17 | 14 | 16 |
| 28.07.2021 | 9 | 10 | 10 | 9 |