| Particules fines (PM10) : moyennes journalières en µg/m3 | |||
| Date | Fribourg : Parc de Pérolles | Fribourg : Chamblioux | Bulle : Rue de Vevey |
| 28.08.2023 | 5 | 7 | 2 |
| 29.08.2023 | 5 | 7 | 3 |
| 30.08.2023 | 7 | 8 | 5 |
| 31.08.2023 | 8 | 9 | 6 |
| 01.09.2023 | 7 | 8 | 7 |
| 02.09.2023 | 9 | 10 | 6 |
| 03.09.2023 | 10 | 10 | 6 |
| 04.09.2023 | 13 | 13 | 10 |
| 05.09.2023 | 16 | 16 | 13 |
| 06.09.2023 | 18 | 17 | 15 |
| 07.09.2023 | 19 | 20 | 16 |
| 08.09.2023 | 21 | 21 | 17 |
| 09.09.2023 | 18 | 19 | 15 |
| 10.09.2023 | 17 | 18 | 14 |
| 11.09.2023 | 19 | 19 | 17 |
| 12.09.2023 | 18 | 18 | - |
| 13.09.2023 | 8 | 11 | 7 |
| 14.09.2023 | 9 | 12 | 7 |
| 15.09.2023 | 13 | 15 | 8 |
| 16.09.2023 | 11 | 11 | 6 |
| 17.09.2023 | 13 | 11 | 8 |
| 18.09.2023 | 9 | 12 | 7 |
| 19.09.2023 | 5 | 7 | 4 |
| 20.09.2023 | 8 | 9 | 5 |
| 21.09.2023 | 9 | 9 | 7 |
| 22.09.2023 | 4 | 5 | 2 |
| 23.09.2023 | 5 | 6 | 2 |
| 24.09.2023 | 6 | 7 | 3 |
| 25.09.2023 | 10 | 10 | 6 |
| 26.09.2023 | 12 | 13 | 8 |
| 27.09.2023 | 15 | 16 | 10 |