Luchtkwaliteitsindex, 25/09/2018 - 09/10/2018
| 25/09 | 26/09 | 27/09 | 28/09 | 29/09 | 30/09 | 01/10 | 02/10 | 03/10 | 04/10 | 05/10 | 06/10 | 07/10 | 08/10 | 09/10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Agglomeratie | |||||||||||||||
| Brussel | 4 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 4 | 4 | 5 | 5 | 3 | 4 | 5 |
| Antwerpen | 4 | 4 | 5 | 4 | 4 | 3 | 3 | 2 | 3 | 4 | 5 | 4 | 3 | 4 | 5 |
| Gent | 4 | 4 | 5 | 3 | 4 | 4 | 3 | 2 | 3 | 4 | 5 | 4 | 4 | 4 | 4 |
| Luik | 3 | 4 | 5 | 3 | 3 | 4 | 3 | 2 | 3 | 4 | 4 | 5 | 3 | 3 | 4 |
| Charleroi | 4 | 5 | 5 | 3 | 3 | 3 | 3 | 2 | 3 | 4 | 4 | 5 | 4 | 4 | 5 |
| Regio | |||||||||||||||
| Kust | 4 | 4 | 5 | 4 | 3 | 4 | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 2 | 3 |
| zuid West-Vlaanderen | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 5 |
| Gentse Kanaalzone | 4 | 4 | 4 | 3 | 3 | 4 | 3 | 2 | 3 | 3 | 4 | 4 | 4 | 3 | 4 |
| zuid Oost-Vlaanderen | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Antwerps Havengebied | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 2 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| Kempen - oost Vlaams-Brabant | 4 | 3 | 5 | 3 | 3 | 4 | 4 | 2 | 4 | 3 | 3 | 5 | 4 | 3 | 3 |
| Limburg | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Gewest | |||||||||||||||
| Brussel | 4 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 4 | 4 | 5 | 5 | 3 | 4 | 5 |
| Vlaanderen | 3 | 4 | 4 | 3 | 3 | 4 | 4 | 2 | 3 | 3 | 4 | 4 | 4 | 3 | 4 |
| Wallonië | 3 | 4 | 5 | 2 | 3 | 4 | 3 | 2 | 3 | 3 | 4 | 5 | 3 | 3 | 3 |
| Land | |||||||||||||||
| België | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 2 | 3 | 3 | 4 | 4 | 3 | 3 | 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 |