| Code | city | 24/03 | 25/03 | 26/03 | 27/03 | 28/03 | 29/03 | 30/03 | 31/03 | 01/04 | 02/04 | 03/04 | 04/04 | 05/04 | 06/04 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 41B011 | Sint-Agatha-Berchem | 74 | 81 | 77 | 83 | 94 | 95 | 81 | 81 | 89 | 78 | 91 | 87 | 79 | 88 | |
| 41MEU1 | Neder-Over-Heembeek | 71 | 80 | 74 | 81 | 88 | 93 | 77 | 81 | 86 | 73 | 85 | 84 | 74 | 87 | |
| 41N043 | Voorhaven (Haren) | 73 | 76 | 66 | 70 | 88 | 92 | 80 | 80 | 88 | 72 | 89 | 86 | 74 | 86 | |
| 41R001 | Sint-Jans-Molenbeek | 67 | 72 | 71 | 73 | 90 | 97 | 74 | 79 | 87 | 71 | 79 | 79 | 70 | 86 | |
| 41R012 | Ukkel | 77 | 77 | 77 | 80 | 95 | 96 | 75 | 83 | 89 | 76 | 90 | 89 | 76 | 93 | |
| 42N016 | Dessel | 76 | 92 | 78 | 79 | 93 | 91 | 85 | 84 | 86 | 76 | 88 | 84 | 77 | 98 | |
| 42N027 | Bree | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 76 | 97 | |
| 42N035 | Aarschot | NA | NA | NA | 83 | 100 | 93 | 81 | 84 | 95 | 83 | 92 | 93 | 84 | 99 | |
| 42N040 | Sint-Pieters-Leeuw | 76 | 82 | NA | 84 | 94 | 92 | 84 | 82 | 88 | 78 | 89 | 86 | 78 | 90 | |
| 42N046 | Gellik | 76 | 86 | NA | 82 | 93 | 88 | 83 | 87 | NA | NA | NA | 90 | 77 | 92 | |
| 42N047 | Hasselt | NA | 77 | 82 | 80 | 93 | 87 | 86 | 83 | 94 | 82 | 91 | 88 | 76 | 88 | |
| 42R801 | Borgerhout | 74 | 75 | 62 | 76 | 91 | 95 | 85 | 79 | 90 | 79 | 91 | 89 | 85 | 93 | |
| 42R842 | Mechelen (Hendrik Speecqvest) | NA | NA | NA | 74 | NA | 89 | 83 | 82 | 88 | 79 | 85 | 81 | 76 | 93 | |
| 44M705 | Roeselare (Haven) | NA | NA | NA | 68 | 95 | 91 | 87 | 88 | 93 | 90 | 93 | 90 | 90 | 91 | |
| 44N012 | Moerkerke | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 96 | 90 | 94 | |
| 44N029 | Houtem (Veurne) | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 90 | 85 | 89 | |
| 44R701 | Gent (Baudelopark) | NA | 73 | 73 | 83 | 95 | 93 | 83 | 84 | 88 | 88 | 92 | 89 | 88 | 89 | |
| 44R710 | Destelbergen | 77 | 87 | 78 | 86 | 96 | 93 | 84 | 85 | 93 | 92 | 95 | 90 | 92 | 92 | |
| 43N060 | Havinnes | 73 | 82 | 78 | 80 | 88 | 83 | 86 | 79 | 89 | 89 | 89 | 86 | 83 | 81 | |
| 43N064 | Rixensart | NA | NA | NA | NA | 97 | 90 | 84 | 86 | 93 | 85 | 92 | 90 | 80 | 95 | |
| 43N066 | Eupen | 68 | 80 | 80 | 76 | 87 | 88 | 78 | 88 | 82 | 82 | 78 | 79 | 72 | 90 | |
| 43N070 | Mons | 68 | 80 | 67 | 74 | 83 | 74 | 71 | 77 | 82 | 73 | 75 | 78 | 63 | 74 | |
| 43N073 | Vezin | 79 | 73 | NA | NA | NA | 89 | 81 | 85 | 90 | 91 | 84 | 89 | 76 | 95 | |
| 43N085 | Vielsalm | NA | NA | NA | 74 | 92 | 79 | 81 | 91 | 77 | 85 | 69 | 82 | 69 | 94 | |
| 43N093 | Sinsin | 76 | 60 | NA | NA | NA | 85 | 85 | 80 | 89 | 95 | 88 | 87 | 73 | 91 | |
| 43N100 | Dourbes | 81 | 90 | 90 | 84 | 96 | 87 | 83 | 84 | 91 | 98 | 93 | 87 | 75 | 97 | |
| 43N113 | Saint-Ode | 79 | 57 | NA | NA | NA | 84 | 79 | 80 | 84 | 95 | 86 | 84 | 68 | 89 | |
| 43N121 | Offagne | 74 | 65 | NA | NA | NA | 82 | 85 | 76 | 85 | 96 | 84 | 86 | 71 | 89 | |
| 43N132 | Habay-La-Neuve | 77 | 57 | NA | NA | NA | 79 | 78 | 82 | 79 | 94 | 78 | 86 | 74 | 94 | |
| 43R221 | Herstal | 71 | 80 | 71 | 73 | 86 | 79 | 75 | 82 | 86 | 72 | 77 | 74 | 66 | 86 | |
| 43R222 | Liège (ISSeP) | 71 | 20 | NA | NA | NA | NA | NA | 86 | 87 | 85 | 79 | 77 | 72 | 91 | |
| 43R240 | Engis | 68 | 81 | 78 | 77 | 86 | 81 | 72 | 78 | 85 | 79 | 76 | 78 | 71 | 88 | |
| 43R401 | Namur | 76 | 79 | 81 | 80 | 91 | 84 | 80 | 83 | 90 | 92 | 82 | 84 | 74 | 93 | |
| 45R502 | Lodelinsart | 70 | 84 | 81 | 81 | 88 | 85 | 66 | 80 | 86 | 82 | 74 | 72 | 68 | 86 | |
| Interpolated spatial average in : | ||||||||||||||||
| Brussels | 73 | 78 | 72 | 78 | 93 | 93 | 74 | 82 | 89 | 76 | 86 | 85 | 76 | 89 | ||
| Flanders | 77 | 88 | 76 | 85 | 99 | 94 | 83 | 86 | 95 | 88 | 93 | 94 | 88 | 93 | ||
| Wallonia | 74 | 88 | 84 | 80 | 93 | 84 | 77 | 81 | 87 | 89 | 83 | 84 | 75 | 90 | ||
| Belgium | 75 | 88 | 81 | 82 | 96 | 88 | 80 | 83 | 91 | 89 | 88 | 89 | 80 | 91 | ||
| % 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% | ||
Color legend:
These data are not validated : they should not be used for any study whatsoever
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