Luchtkwaliteitsindex, 30/12/2004 - 13/01/2005
| 30/12 | 31/12 | 01/01 | 02/01 | 03/01 | 04/01 | 05/01 | 06/01 | 07/01 | 08/01 | 09/01 | 10/01 | 11/01 | 12/01 | 13/01 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 4 | 2 | 3 | 3 | 3 | 3 | 4 | 5 |
| Antwerpen | 3 | 4 | 3 | 3 | 4 | NA | 4 | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 5 |
| Gent | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 5 |
| Luik | 3 | 3 | 3 | 4 | 4 | 3 | 3 | 4 | 5 | 5 | 5 | 6 | 6 | 5 | 5 |
| Charleroi | 3 | 4 | 3 | 4 | 4 | 3 | 3 | 4 | 2 | 3 | 4 | 3 | 3 | 4 | 6 |
| Regio | |||||||||||||||
| Kust | 3 | 3 | 4 | 4 | 3 | 4 | 2 | 3 | 4 | 4 | 4 | 3 | 4 | 4 | 4 |
| zuid West-Vlaanderen | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 6 |
| Gentse Kanaalzone | 4 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 5 |
| zuid Oost-Vlaanderen | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 4 | 6 |
| Antwerps Havengebied | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 5 |
| Kempen - oost Vlaams-Brabant | NA | NA | NA | NA | 3 | NA | 2 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | 4 |
| Limburg | NA | 2 | 3 | 4 | 3 | NA | 3 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | 4 |
| Gewest | |||||||||||||||
| Brussel | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 4 | 2 | 3 | 3 | 3 | 3 | 4 | 5 |
| Vlaanderen | 3 | 2 | 3 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 4 | 5 |
| Wallonië | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 4 | 3 | 3 | 4 | 3 | 4 | 5 | 6 |
| Land | |||||||||||||||
| België | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 4 | 5 |
| 1 | uitstekend |
| 2 | zeer goed |
| 3 | goed |
| 4 | vrij goed |
| 5 | gewoon |
| 6 | middelmatig |
| 7 | ondermaats |
| 8 | slecht |
| 9 | zeer slecht |
| 10 | verschrikkelijk slecht |