Luchtkwaliteitsindex, 26/08/2011 - 09/09/2011
| 26/08 | 27/08 | 28/08 | 29/08 | 30/08 | 31/08 | 01/09 | 02/09 | 03/09 | 04/09 | 05/09 | 06/09 | 07/09 | 08/09 | 09/09 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 2 |
| Antwerpen | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 3 | 3 | 3 | 3 | 3 | 3 |
| Gent | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 5 | 6 | 3 | 4 | 3 | 3 | 3 | 2 |
| Luik | 3 | 4 | 4 | 4 | 3 | 4 | 5 | 5 | 6 | 4 | 4 | 4 | 3 | 3 | 2 |
| Charleroi | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 |
| Regio | |||||||||||||||
| Kust | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 5 | 5 | 3 | 4 | 3 | 3 | 4 | 2 |
| zuid West-Vlaanderen | 4 | 4 | 4 | 3 | 3 | 4 | 5 | 5 | 6 | 4 | 4 | 3 | 3 | 3 | 2 |
| Gentse Kanaalzone | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 5 | 5 | 3 | 3 | 4 | 3 | 3 | 2 |
| zuid Oost-Vlaanderen | 3 | 4 | 3 | 4 | 2 | 3 | 4 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 2 |
| Antwerps Havengebied | 3 | 4 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 3 | 4 | 3 | 2 | NA | 2 |
| Kempen - oost Vlaams-Brabant | 3 | 4 | 3 | 3 | 2 | 3 | 5 | 5 | 6 | 4 | 3 | 3 | 3 | 3 | 2 |
| Limburg | 3 | 4 | 3 | 3 | 2 | 4 | 4 | 5 | 6 | 4 | 4 | 3 | 3 | 3 | 2 |
| Gewest | |||||||||||||||
| Brussel | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 2 |
| Vlaanderen | 3 | 4 | 3 | 3 | 2 | 3 | 4 | 5 | 5 | 3 | 4 | 3 | 3 | 3 | 2 |
| Wallonië | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 2 |
| Land | |||||||||||||||
| België | 3 | 3 | 3 | 3 | 2 | 3 | 4 | 5 | 5 | 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 |