Luchtkwaliteitsindex, 13/05/2011 - 27/05/2011
| 13/05 | 14/05 | 15/05 | 16/05 | 17/05 | 18/05 | 19/05 | 20/05 | 21/05 | 22/05 | 23/05 | 24/05 | 25/05 | 26/05 | 27/05 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 5 | 6 | 4 | 5 | 4 | 5 | 4 | 3 |
| Antwerpen | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 4 | 6 | 4 | 5 | 4 | 5 | 4 | 4 |
| Gent | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 7 | 5 | 5 | 4 | 6 | 4 | 4 |
| Luik | 6 | 5 | 4 | 4 | 5 | 4 | 4 | 4 | 6 | 5 | 5 | 5 | 6 | 5 | 3 |
| Charleroi | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 4 | 6 | 4 | 5 | 4 | 6 | 5 | 3 |
| Regio | |||||||||||||||
| Kust | 4 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 4 |
| zuid West-Vlaanderen | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 6 | 5 | 5 | 4 | 5 | 4 | 4 |
| Gentse Kanaalzone | 4 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 7 | 5 | 5 | 4 | 6 | 6 | 4 |
| zuid Oost-Vlaanderen | 6 | 5 | 5 | 4 | 5 | 5 | 3 | 5 | 7 | 5 | 6 | 5 | 6 | 4 | 4 |
| Antwerps Havengebied | 4 | 5 | 4 | 4 | 3 | 3 | 3 | 5 | 6 | 5 | 5 | 4 | 5 | 4 | 5 |
| Kempen - oost Vlaams-Brabant | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 4 | 7 | 5 | 5 | 4 | 5 | 5 | 4 |
| Limburg | 6 | 5 | 5 | 4 | 4 | 5 | 3 | 4 | 7 | 5 | 5 | 4 | 5 | 5 | 4 |
| Gewest | |||||||||||||||
| Brussel | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 5 | 6 | 4 | 5 | 4 | 5 | 4 | 3 |
| Vlaanderen | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 4 | 6 | 5 | 5 | 4 | 5 | 4 | 4 |
| Wallonië | 6 | 5 | 4 | 4 | 5 | 4 | 4 | 4 | 6 | 5 | 5 | 4 | 6 | 5 | 4 |
| Land | |||||||||||||||
| België | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 4 | 6 | 4 | 5 | 4 | 6 | 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 |