| Code | city | 15/12 | 16/12 | 17/12 | 18/12 | 19/12 | 20/12 | 21/12 | 22/12 | 23/12 | 24/12 | 25/12 | 26/12 | 27/12 | 28/12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 41B011 | Sint-Agatha-Berchem | 54 | 62 | 48 | 52 | 73 | 54 | 70 | 74 | 73 | 52 | 38 | 26 | 5 | 16 | |
| 41MEU1 | Neder-Over-Heembeek | 47 | 57 | 49 | 53 | 66 | 47 | 66 | 73 | 75 | 43 | 34 | 26 | 10 | 14 | |
| 41N043 | Voorhaven (Haren) | NA | 44 | 46 | 54 | 61 | 51 | 52 | NA | 56 | 42 | 33 | 27 | 13 | 19 | |
| 41R001 | Sint-Jans-Molenbeek | 48 | 60 | 46 | 55 | 73 | 48 | 62 | 70 | 73 | 45 | 36 | 28 | 7 | 21 | |
| 41R012 | Ukkel | 52 | 58 | 52 | 57 | 74 | 53 | 63 | 77 | 75 | 56 | 43 | 25 | 8 | 14 | |
| 42N016 | Dessel | 45 | 59 | 50 | 56 | 71 | 64 | 64 | 78 | 74 | 53 | 45 | 37 | 14 | 10 | |
| 42N027 | Bree | 51 | 64 | 54 | 57 | 79 | 70 | 73 | 83 | 76 | 53 | 37 | 31 | 11 | 10 | |
| 42N035 | Aarschot | 56 | 65 | 54 | 60 | 80 | 60 | 72 | 82 | 78 | 58 | 47 | 39 | 17 | 13 | |
| 42N040 | Sint-Pieters-Leeuw | 55 | 61 | 56 | 56 | 79 | 58 | 68 | 77 | 72 | 58 | 45 | 34 | 10 | 23 | |
| 42N046 | Gellik | 54 | 63 | 56 | 59 | 76 | 64 | 73 | 81 | 75 | 52 | 38 | 19 | 11 | 14 | |
| 42N047 | Hasselt | 48 | 61 | 55 | 61 | 76 | 59 | 70 | 84 | 75 | 52 | 34 | 36 | 11 | 7 | |
| 42R801 | Borgerhout | 53 | 60 | 54 | 55 | 77 | 60 | 65 | 80 | 77 | 47 | 46 | 35 | 18 | 7 | |
| 42R811 | Schoten | 54 | 63 | 54 | 57 | 78 | 60 | 69 | 70 | 78 | 51 | 49 | 34 | 19 | 8 | |
| 42R842 | Mechelen (Hendrik Speecqvest) | 55 | 62 | 51 | 58 | 78 | 60 | 71 | 76 | 79 | 47 | 37 | 33 | 15 | 11 | |
| 44M705 | Roeselare (Haven) | 60 | 64 | 56 | 69 | 82 | 60 | 76 | 76 | 66 | 75 | 60 | 54 | 13 | 16 | |
| 44N012 | Moerkerke | 57 | 70 | 58 | 72 | 81 | 62 | 70 | 78 | 77 | 68 | 59 | 59 | 15 | 17 | |
| 44N029 | Houtem (Veurne) | 66 | 72 | 59 | 73 | 85 | 70 | 75 | 81 | 73 | 62 | 62 | 62 | 25 | 13 | |
| 44R701 | Gent (Baudelopark) | 57 | 67 | 57 | 56 | 83 | 59 | 71 | 81 | 70 | 69 | 37 | 54 | 10 | 16 | |
| 44R710 | Destelbergen | 59 | 69 | 59 | 58 | 84 | 60 | 73 | 82 | 72 | 67 | 36 | 49 | 11 | 18 | |
| 43N060 | Havinnes | 52 | 59 | 50 | 44 | 68 | 55 | 65 | 67 | 60 | 63 | 33 | 30 | 7 | 14 | |
| 43N064 | Rixensart | NA | 60 | 51 | 58 | 74 | 57 | 68 | 78 | 75 | 57 | 43 | 34 | 8 | 15 | |
| 43N066 | Eupen | 48 | 56 | 50 | 59 | 71 | 56 | 63 | 78 | 68 | 51 | 38 | 21 | 32 | 31 | |
| 43N070 | Mons | 46 | 55 | 41 | 51 | 59 | 48 | 63 | 70 | 63 | 50 | 35 | 29 | 5 | 10 | |
| 43N073 | Vezin | 48 | 58 | 55 | 56 | 71 | 58 | 65 | 74 | 71 | 49 | 34 | 29 | 5 | 20 | |
| 43N085 | Vielsalm | 55 | 59 | 51 | 56 | 77 | 58 | 73 | 78 | 75 | 50 | 35 | 41 | 52 | 31 | |
| 43N093 | Sinsin | 51 | 63 | 55 | 58 | 72 | 61 | 79 | 80 | 76 | 58 | 42 | 28 | 23 | 18 | |
| 43N100 | Dourbes | 47 | 56 | 51 | 56 | 69 | 58 | 64 | 77 | 65 | 51 | 33 | 28 | 12 | 17 | |
| 43N113 | Saint-Ode | 56 | 62 | 60 | 64 | 74 | 62 | 68 | 79 | 79 | 63 | 47 | 52 | 53 | 33 | |
| 43N121 | Offagne | 42 | 61 | 55 | 57 | 70 | 56 | 65 | 74 | 72 | 47 | 42 | 49 | 48 | 34 | |
| 43N132 | Habay-La-Neuve | 40 | 54 | 50 | 58 | 72 | 56 | 62 | 78 | 77 | 45 | 39 | 48 | 44 | 20 | |
| 43R221 | Herstal | 48 | 55 | 52 | 56 | 67 | 53 | 66 | 75 | 69 | 48 | 36 | 19 | 4 | 14 | |
| 43R222 | Liège (ISSeP) | 57 | 63 | 59 | 59 | 71 | 60 | 73 | 76 | 68 | 55 | 36 | 25 | 9 | 13 | |
| 43R240 | Engis | 40 | 35 | 44 | 54 | 64 | 50 | 60 | 75 | 69 | 49 | 36 | 20 | 6 | 9 | |
| 43R401 | Namur | 51 | 62 | 54 | 56 | 72 | 60 | 71 | 77 | 71 | 38 | 33 | 25 | 5 | 11 | |
| 45R502 | Lodelinsart | 28 | 42 | 38 | 47 | 54 | 42 | 59 | 66 | 61 | 38 | 25 | 14 | 0 | 6 | |
| Interpolated spatial average in : | ||||||||||||||||
| Brussels | 51 | 60 | 48 | 56 | 73 | 52 | 65 | 74 | 74 | 49 | 37 | 27 | 9 | 16 | ||
| Flanders | 56 | 66 | 55 | 62 | 82 | 61 | 70 | 80 | 78 | 60 | 46 | 41 | 15 | 18 | ||
| Wallonia | 47 | 58 | 51 | 57 | 71 | 57 | 66 | 77 | 73 | 52 | 37 | 31 | 23 | 21 | ||
| Belgium | 51 | 62 | 53 | 59 | 76 | 59 | 68 | 78 | 75 | 55 | 41 | 36 | 19 | 19 | ||
| % 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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