Luchtkwaliteitsindex, 27/02/2011 - 13/03/2011
| 27/02 | 28/02 | 01/03 | 02/03 | 03/03 | 04/03 | 05/03 | 06/03 | 07/03 | 08/03 | 09/03 | 10/03 | 11/03 | 12/03 | 13/03 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 3 | 6 | 7 | 7 | 7 | 7 | 5 | 4 | 4 | 6 | 5 | 3 | 4 | 4 | 3 |
| Antwerpen | 3 | 6 | 7 | 8 | 7 | 7 | 4 | 5 | 4 | 6 | 5 | 4 | 5 | 5 | 4 |
| Gent | 4 | 7 | 7 | 8 | 7 | 7 | 5 | 5 | 4 | 6 | 5 | 4 | 5 | 4 | 4 |
| Luik | 4 | 5 | 7 | 7 | 7 | 7 | 6 | 4 | 4 | 5 | 5 | 3 | 4 | 5 | 4 |
| Charleroi | 3 | 5 | 7 | 7 | 7 | 7 | 6 | 4 | 4 | 5 | 4 | 3 | 4 | 4 | 4 |
| Regio | |||||||||||||||
| Kust | 4 | 7 | 6 | 8 | 7 | 7 | 4 | 4 | 3 | 6 | 4 | 4 | 4 | 4 | 4 |
| zuid West-Vlaanderen | 2 | 6 | 7 | 7 | 7 | 7 | 4 | 5 | 4 | 6 | 4 | 4 | 4 | 4 | 4 |
| Gentse Kanaalzone | 4 | 7 | 7 | 8 | 7 | 8 | 4 | 4 | 4 | 6 | 5 | 4 | 4 | 4 | 4 |
| zuid Oost-Vlaanderen | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Antwerps Havengebied | 2 | 6 | 6 | 7 | NA | 6 | 4 | 5 | 4 | 6 | 4 | 4 | 4 | 4 | 3 |
| Kempen - oost Vlaams-Brabant | 4 | 6 | 7 | 8 | 7 | 7 | 5 | 5 | 4 | 5 | 5 | 4 | 4 | 4 | 4 |
| Limburg | 4 | 6 | 7 | 7 | 7 | 7 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Gewest | |||||||||||||||
| Brussel | 3 | 6 | 7 | 7 | 7 | 7 | 5 | 4 | 4 | 6 | 5 | 3 | 4 | 4 | 3 |
| Vlaanderen | 4 | 6 | 7 | 7 | 7 | 7 | 4 | 4 | 3 | 6 | 5 | 4 | 4 | 4 | 4 |
| Wallonië | 4 | 4 | 6 | 7 | 7 | 7 | 6 | 4 | 4 | 5 | 4 | 4 | 4 | 5 | 4 |
| Land | |||||||||||||||
| België | 4 | 6 | 7 | 7 | 7 | 7 | 5 | 4 | 3 | 5 | 5 | 4 | 4 | 4 | 4 |
| 1 | uitstekend |
| 2 | zeer goed |
| 3 | goed |
| 4 | vrij goed |
| 5 | gewoon |
| 6 | middelmatig |
| 7 | ondermaats |
| 8 | slecht |
| 9 | zeer slecht |
| 10 | verschrikkelijk slecht |