Luchtkwaliteitsindex, 29/12/2010 - 12/01/2011
| 29/12 | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 4 | 4 | 6 | 5 | 4 | 4 | 4 | 3 | 3 | 4 | 3 | 4 | 5 | 4 | 3 |
| Antwerpen | 6 | 6 | 7 | 6 | 5 | 4 | 4 | 4 | 4 | 5 | 3 | 4 | 5 | 4 | 4 |
| Gent | 5 | 6 | 7 | 5 | 3 | 4 | 4 | 3 | 2 | 3 | 3 | 4 | 4 | 3 | 3 |
| Luik | 4 | 3 | 5 | 5 | 4 | 5 | 3 | 3 | 2 | 3 | 4 | 4 | 3 | 3 | 3 |
| Charleroi | 4 | 3 | 5 | 5 | 3 | 5 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 3 | 3 |
| Regio | |||||||||||||||
| Kust | 5 | 6 | 6 | 4 | 4 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 3 | 3 |
| zuid West-Vlaanderen | 4 | 4 | 6 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 4 | 3 | 4 | 3 | 3 |
| Gentse Kanaalzone | 6 | 6 | 7 | 5 | 3 | 3 | 5 | 4 | 3 | 3 | 2 | 3 | 4 | 3 | 3 |
| zuid Oost-Vlaanderen | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Antwerps Havengebied | 4 | 4 | 6 | 3 | 3 | 3 | 3 | NA | 3 | 4 | 3 | 4 | 4 | 4 | 3 |
| Kempen - oost Vlaams-Brabant | 6 | 6 | 6 | 5 | 3 | 4 | 4 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 |
| Limburg | 5 | 6 | 6 | 5 | 3 | 4 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 |
| Gewest | |||||||||||||||
| Brussel | 4 | 4 | 6 | 5 | 4 | 4 | 4 | 3 | 3 | 4 | 3 | 4 | 5 | 4 | 3 |
| Vlaanderen | 5 | 6 | 6 | 5 | 2 | 4 | 4 | 3 | 2 | 3 | 4 | 3 | 4 | 3 | 3 |
| Wallonië | 4 | 3 | 4 | 4 | 3 | 4 | 3 | 3 | 2 | 2 | 4 | 3 | 3 | 3 | 2 |
| Land | |||||||||||||||
| België | 5 | 5 | 6 | 5 | 3 | 4 | 3 | 3 | 2 | 3 | 3 | 3 | 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 |