| Code | city | 30/10 | 31/10 | 01/11 | 02/11 | 03/11 | 04/11 | 05/11 | 06/11 | 07/11 | 08/11 | 09/11 | 10/11 | 11/11 | 12/11 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 41B011 | Sint-Agatha-Berchem | 65 | 48 | 56 | 74 | 66 | 66 | 61 | 63 | 67 | 62 | 65 | 59 | 52 | 44 | |
| 41MEU1 | Neder-Over-Heembeek | 51 | 37 | 52 | 68 | 56 | 62 | 55 | 52 | 63 | 59 | 55 | 50 | 41 | 40 | |
| 41N043 | Voorhaven (Haren) | 63 | 46 | 54 | 70 | 66 | 62 | 62 | 57 | 62 | 58 | 58 | 57 | 52 | 36 | |
| 41R001 | Sint-Jans-Molenbeek | 52 | 42 | 51 | 68 | 62 | 62 | 57 | 56 | 55 | 57 | 57 | 54 | 38 | 35 | |
| 41R012 | Ukkel | 63 | 47 | 57 | 74 | 66 | 66 | 61 | 63 | 65 | 66 | 66 | 59 | 49 | 41 | |
| 42N027 | Bree | 75 | 72 | 66 | 85 | 76 | 82 | 76 | 70 | NA | NA | NA | NA | NA | NA | |
| 42N035 | Aarschot | NA | NA | 64 | 76 | 70 | 73 | 66 | 69 | 67 | 68 | 71 | 63 | 56 | 46 | |
| 42N040 | Sint-Pieters-Leeuw | 70 | 52 | 62 | 75 | 67 | 71 | 66 | 64 | 69 | 64 | 70 | 59 | 55 | 49 | |
| 42N046 | Gellik | 70 | 66 | 59 | 77 | 67 | 70 | 68 | 62 | NA | NA | NA | NA | NA | NA | |
| 42N047 | Hasselt | 67 | 61 | 58 | 77 | 67 | 72 | 69 | 63 | NA | NA | NA | NA | NA | NA | |
| 42N054 | Walshoutem | NA | 51 | 54 | NA | 67 | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| 42R801 | Borgerhout | 56 | 44 | 53 | 69 | 63 | 60 | 58 | 62 | 57 | 57 | 57 | 58 | 55 | 30 | |
| 42R811 | Schoten | 62 | 49 | 57 | 73 | 63 | 64 | 62 | 62 | 62 | 61 | 61 | 57 | 54 | 31 | |
| 42R831 | Berendrecht | 69 | 45 | 52 | 70 | 58 | 59 | 56 | 57 | 55 | 57 | 62 | 54 | 51 | 26 | |
| 42R842 | Mechelen (Hendrik Speecqvest) | 57 | 49 | 54 | 73 | 66 | 64 | 62 | 66 | 66 | 61 | 64 | 62 | 56 | 38 | |
| 44M705 | Roeselare (Haven) | NA | 19 | 38 | 58 | 41 | 36 | 32 | 31 | 42 | 38 | 24 | 34 | 20 | 16 | |
| 44N012 | Moerkerke | 58 | 61 | 69 | 77 | 80 | 77 | 72 | 79 | NA | NA | NA | NA | NA | NA | |
| 44N029 | Houtem (Veurne) | 59 | 56 | 72 | 72 | 75 | 77 | 72 | 79 | NA | NA | NA | NA | NA | NA | |
| 44N051 | Idegem | 78 | 52 | 58 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| 44R701 | Gent (Baudelopark) | 59 | 53 | 62 | 77 | 66 | 69 | 65 | 71 | 70 | 61 | 73 | 65 | 54 | 36 | |
| 44R710 | Destelbergen | 57 | 50 | 63 | 77 | 65 | 66 | 65 | 69 | 69 | 60 | 71 | 65 | NA | NA | |
| 44R740 | Sint-Kruiswinkel | 56 | 42 | 58 | 75 | 62 | 64 | 63 | 65 | 60 | 59 | 69 | 63 | 61 | 38 | |
| 43N060 | Havinnes | 58 | 45 | 53 | 74 | 66 | 67 | 65 | 65 | 71 | 58 | 68 | 61 | 57 | 42 | |
| 43N064 | Rixensart | 65 | 52 | 61 | 74 | 65 | 65 | 64 | 65 | 66 | 65 | 65 | 59 | 53 | 42 | |
| 43N066 | Eupen | 68 | 66 | 59 | 73 | 65 | 66 | 63 | 65 | 63 | 68 | 71 | 62 | 52 | 54 | |
| 43N070 | Mons | 52 | 40 | 55 | 68 | 59 | 61 | 59 | 56 | 52 | 54 | 53 | 49 | 39 | 43 | |
| 43N073 | Vezin | 70 | 61 | 62 | 76 | 71 | 74 | 71 | 69 | 65 | 69 | 71 | 63 | 59 | 50 | |
| 43N085 | Vielsalm | 66 | 57 | 54 | 68 | 62 | 65 | 68 | 57 | 55 | 64 | 72 | 60 | 57 | 50 | |
| 43N093 | Sinsin | 69 | 62 | 63 | 77 | 67 | 73 | 73 | 70 | 65 | 68 | 78 | 65 | 60 | 56 | |
| 43N100 | Dourbes | 67 | 59 | 65 | 79 | 71 | 76 | 74 | 69 | 67 | 69 | 77 | 65 | 62 | 59 | |
| 43N113 | Saint-Ode | 72 | 65 | 69 | 78 | 66 | 77 | 82 | 68 | 67 | 69 | 79 | 69 | 67 | 64 | |
| 43N121 | Offagne | 68 | 61 | 62 | 76 | 64 | 74 | 80 | 65 | 65 | 65 | 77 | 66 | 58 | 61 | |
| 43N132 | Habay-La-Neuve | 67 | 60 | 65 | 76 | 67 | 73 | 79 | 65 | 66 | 67 | 70 | 68 | 65 | 62 | |
| 43R221 | Herstal | 64 | 58 | 56 | 72 | 60 | 66 | 62 | 62 | 62 | 65 | 64 | 59 | 50 | 46 | |
| 43R222 | Liège (ISSeP) | 66 | 63 | 61 | 71 | 66 | 72 | 67 | 63 | 65 | 63 | 71 | 62 | 50 | 50 | |
| 43R240 | Engis | 60 | 57 | 61 | 74 | 67 | 71 | 63 | 68 | 60 | 71 | 64 | 57 | 50 | 45 | |
| 43R401 | Namur | 71 | 62 | 60 | 74 | 69 | 72 | 71 | 67 | 64 | 64 | 69 | 65 | 59 | 48 | |
| 45R502 | Lodelinsart | 54 | 41 | 51 | 69 | 58 | 65 | 57 | 58 | 49 | 60 | 55 | 48 | 46 | 45 | |
| Interpolated spatial average in : | ||||||||||||||||
| Brussels | 59 | 47 | 57 | 74 | 66 | 65 | 61 | 61 | 63 | 61 | 62 | 58 | 49 | 40 | ||
| Flanders | 60 | 55 | 62 | 79 | 68 | 67 | 65 | 68 | 66 | 63 | 69 | 64 | 49 | 38 | ||
| Wallonia | 62 | 57 | 61 | 77 | 67 | 71 | 69 | 66 | 63 | 67 | 71 | 64 | 55 | 52 | ||
| Belgium | 61 | 56 | 61 | 78 | 67 | 69 | 67 | 67 | 64 | 65 | 70 | 64 | 52 | 46 | ||
| % of the population exposed to O3 concentrations > 180 μg/m³ in: | ||||||||||||||||
| Brussels | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| Flanders | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| Wallonia | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| Belgium | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| % of the population exposed to O3 concentrations > 240 μg/m³ in: | ||||||||||||||||
| Brussels | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| Flanders | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| Wallonia | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
| Belgium | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | ||
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These data are not validated : they should not be used for any study whatsoever
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