Luchtkwaliteitsindex, 07/07/2009 - 21/07/2009
| 07/07 | 08/07 | 09/07 | 10/07 | 11/07 | 12/07 | 13/07 | 14/07 | 15/07 | 16/07 | 17/07 | 18/07 | 19/07 | 20/07 | 21/07 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 3 | 2 | 3 | 3 | NA | NA | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 3 | 5 |
| Antwerpen | 3 | 3 | 3 | 3 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 |
| Gent | 3 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 4 | 4 |
| Luik | 4 | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 4 | 4 | 3 | 4 | 5 |
| Charleroi | 2 | 2 | 2 | 3 | 2 | 2 | 4 | 4 | 4 | 5 | 4 | 3 | 3 | 3 | 5 |
| Regio | |||||||||||||||
| Kust | 4 | 3 | 4 | 4 | 3 | NA | 4 | 3 | 4 | 5 | 4 | 4 | 4 | 4 | 5 |
| zuid West-Vlaanderen | 3 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 4 | 5 | 4 | 4 | 4 | 4 | 5 |
| Gentse Kanaalzone | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 3 | 3 | 5 | 4 | 4 | 3 | 3 | 4 |
| zuid Oost-Vlaanderen | 3 | 3 | 4 | 3 | 3 | 4 | 5 | 4 | 4 | 5 | 4 | 4 | 3 | 4 | 5 |
| Antwerps Havengebied | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | NA | NA | 3 | 2 | 2 | 3 | 4 |
| Kempen - oost Vlaams-Brabant | 3 | 3 | 3 | 3 | 2 | 3 | 5 | 4 | 4 | 5 | 4 | 4 | 3 | 4 | 5 |
| Limburg | 4 | 3 | 4 | 2 | 3 | 4 | 5 | 4 | 5 | 5 | 4 | 4 | 3 | 4 | 5 |
| Gewest | |||||||||||||||
| Brussel | 3 | 2 | 3 | 3 | NA | NA | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 3 | 5 |
| Vlaanderen | 3 | 3 | 3 | 3 | 2 | 3 | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 4 | 5 |
| Wallonië | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 4 | 3 | 4 | 6 |
| Land | |||||||||||||||
| België | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 4 | 4 | 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 |