Luchtkwaliteitsindex, 04/03/2023 - 18/03/2023
| 04/03 | 05/03 | 06/03 | 07/03 | 08/03 | 09/03 | 10/03 | 11/03 | 12/03 | 13/03 | 14/03 | 15/03 | 16/03 | 17/03 | 18/03 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 6 | 6 | 6 | 6 | 8 | 7 | NA | 7 | 4 | 3 | 5 | 6 | 4 | 6 | 4 |
| Antwerpen | 5 | 5 | 6 | 7 | 7 | 7 | 5 | 7 | 5 | 4 | 4 | 7 | 5 | 8 | 4 |
| Gent | 4 | 4 | 6 | 3 | 6 | 6 | 3 | 5 | 5 | 3 | 4 | 5 | 4 | 4 | 4 |
| Luik | 6 | 4 | 6 | 4 | 8 | 5 | 3 | 5 | 4 | 3 | 4 | 4 | 4 | 4 | 4 |
| Charleroi | 5 | 4 | 6 | 4 | 8 | 3 | 3 | 6 | 4 | 3 | 3 | 4 | 4 | 4 | 4 |
| Regio | |||||||||||||||
| Kust | 4 | 5 | 5 | 4 | 5 | 5 | 5 | 4 | 5 | 4 | 4 | 4 | 3 | 5 | 3 |
| zuid West-Vlaanderen | 4 | 5 | 6 | 4 | 6 | 6 | 4 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 4 |
| Gentse Kanaalzone | 4 | 4 | 6 | 4 | 6 | 6 | 3 | 4 | 5 | 3 | 4 | 5 | 4 | 5 | 4 |
| zuid Oost-Vlaanderen | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Antwerps Havengebied | 5 | 5 | 6 | 6 | 7 | 7 | 5 | 7 | 5 | 5 | 5 | 7 | 5 | 7 | 5 |
| Kempen - oost Vlaams-Brabant | 4 | 4 | 6 | 3 | 5 | 5 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 |
| Limburg | 4 | 4 | 6 | 3 | 6 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Gewest | |||||||||||||||
| Brussel | 6 | 6 | 6 | 6 | 8 | 7 | NA | 7 | 4 | 3 | 5 | 6 | 4 | 6 | 4 |
| Vlaanderen | 4 | 4 | 6 | 5 | 6 | 5 | 4 | 5 | 5 | 3 | 4 | 5 | 4 | 5 | 4 |
| Wallonië | 5 | 3 | 5 | 3 | 6 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | 4 | 4 | 4 |
| Land | |||||||||||||||
| België | 4 | 4 | 6 | 4 | 6 | 5 | 3 | 5 | 4 | 3 | 4 | 5 | 4 | 5 | 4 |
| 1 | uitstekend |
| 2 | zeer goed |
| 3 | goed |
| 4 | vrij goed |
| 5 | middelmatig |
| 6 | ondermaats |
| 7 | vrij slecht |
| 8 | slecht |
| 9 | zeer slecht |
| 10 | Uitermate slecht |