Luchtkwaliteitsindex, 17/12/2021 - 31/12/2021
| 17/12 | 18/12 | 19/12 | 20/12 | 21/12 | 22/12 | 23/12 | 24/12 | 25/12 | 26/12 | 27/12 | 28/12 | 29/12 | 30/12 | 31/12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 3 | 2 | 2 | 3 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| Antwerpen | 3 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 2 | 3 | 3 | 3 | 2 | 3 | 2 |
| Gent | 4 | 3 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 3 | 2 | 4 | 3 | 3 | 3 |
| Luik | 5 | 2 | 2 | 4 | 4 | 5 | 3 | 2 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| Charleroi | 4 | 2 | 2 | 3 | 4 | 4 | 3 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | 2 |
| Regio | |||||||||||||||
| Kust | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 4 | 3 | 3 | 3 |
| zuid West-Vlaanderen | 3 | 3 | 2 | 3 | 5 | 5 | 4 | 3 | 3 | 3 | 2 | 4 | 3 | 3 | 3 |
| Gentse Kanaalzone | 3 | 3 | 3 | 3 | 5 | 5 | 4 | 4 | 2 | 3 | 2 | 4 | 3 | 3 | 3 |
| zuid Oost-Vlaanderen | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Antwerps Havengebied | 3 | 2 | 3 | 3 | 4 | 6 | 6 | 4 | 2 | 3 | 3 | 3 | 2 | 3 | 3 |
| Kempen - oost Vlaams-Brabant | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| Limburg | 4 | 3 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| Gewest | |||||||||||||||
| Brussel | 3 | 2 | 2 | 3 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| Vlaanderen | 3 | 2 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 3 | 2 | 4 | 3 | 3 | 2 |
| Wallonië | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| Land | |||||||||||||||
| België | 3 | 2 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 2 | 2 | 4 | 3 | 3 | 2 |
| 1 | uitstekend |
| 2 | zeer goed |
| 3 | goed |
| 4 | vrij goed |
| 5 | gewoon |
| 6 | middelmatig |
| 7 | ondermaats |
| 8 | slecht |
| 9 | zeer slecht |
| 10 | verschrikkelijk slecht |