| Code | city | 18/03 | 19/03 | 20/03 | 21/03 | 22/03 | 23/03 | 24/03 | 25/03 | 26/03 | 27/03 | 28/03 | 29/03 | 30/03 | 31/03 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 41B011 | Sint-Agatha-Berchem | 80 | 77 | 82 | 68 | 64 | 85 | 74 | 81 | 77 | 83 | 94 | 95 | 81 | 81 | |
| 41MEU1 | Neder-Over-Heembeek | 75 | 76 | 76 | 63 | 60 | 78 | 71 | 80 | 74 | 81 | 88 | 93 | 77 | 81 | |
| 41N043 | Voorhaven (Haren) | 69 | 63 | 69 | 58 | 63 | 78 | 73 | 76 | 66 | 70 | 88 | 92 | 80 | 80 | |
| 41R001 | Sint-Jans-Molenbeek | 65 | 65 | 69 | 53 | 54 | 76 | 67 | 72 | 71 | 73 | 90 | 97 | 74 | 79 | |
| 41R012 | Ukkel | 75 | 76 | 78 | 65 | 67 | 85 | 77 | 77 | 77 | 80 | 95 | 96 | 75 | 83 | |
| 42N016 | Dessel | NA | NA | 88 | 62 | 71 | 84 | 76 | 92 | 78 | 79 | 93 | 91 | 85 | 84 | |
| 42N027 | Bree | 60 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| 42N035 | Aarschot | NA | NA | NA | NA | NA | NA | NA | NA | NA | 83 | 100 | 93 | 81 | 84 | |
| 42N040 | Sint-Pieters-Leeuw | 79 | 77 | 83 | 68 | 71 | 83 | 76 | 82 | NA | 84 | 94 | 92 | 84 | 82 | |
| 42N046 | Gellik | 51 | NA | NA | NA | NA | 84 | 76 | 86 | NA | 82 | 93 | 88 | 83 | 87 | |
| 42N047 | Hasselt | 72 | NA | NA | NA | 64 | 81 | NA | 77 | 82 | 80 | 93 | 87 | 86 | 83 | |
| 42R801 | Borgerhout | 63 | 75 | 78 | 61 | 65 | 80 | 74 | 75 | 62 | 76 | 91 | 95 | 85 | 79 | |
| 42R842 | Mechelen (Hendrik Speecqvest) | NA | NA | NA | NA | NA | NA | NA | NA | NA | 74 | NA | 89 | 83 | 82 | |
| 44M705 | Roeselare (Haven) | 60 | NA | NA | NA | NA | NA | NA | NA | NA | 68 | 95 | 91 | 87 | 88 | |
| 44N012 | Moerkerke | 56 | NA | NA | NA | 74 | 86 | NA | NA | NA | NA | NA | NA | NA | NA | |
| 44N029 | Houtem (Veurne) | 58 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| 44R701 | Gent (Baudelopark) | 83 | 70 | 76 | 73 | 63 | 82 | NA | 73 | 73 | 83 | 95 | 93 | 83 | 84 | |
| 44R710 | Destelbergen | 88 | 84 | 78 | 74 | 67 | 83 | 77 | 87 | 78 | 86 | 96 | 93 | 84 | 85 | |
| 43N060 | Havinnes | 77 | 83 | 82 | 58 | 71 | 76 | 73 | 82 | 78 | 80 | 88 | 83 | 86 | 79 | |
| 43N064 | Rixensart | 61 | NA | NA | NA | 70 | NA | NA | NA | NA | NA | 97 | 90 | 84 | 86 | |
| 43N066 | Eupen | 49 | NA | NA | NA | 67 | 76 | 68 | 80 | 80 | 76 | 87 | 88 | 78 | 88 | |
| 43N070 | Mons | 65 | 63 | 72 | 46 | 62 | 76 | 68 | 80 | 67 | 74 | 83 | 74 | 71 | 77 | |
| 43N073 | Vezin | 84 | 83 | 90 | 71 | 75 | 87 | 79 | 73 | NA | NA | NA | 89 | 81 | 85 | |
| 43N085 | Vielsalm | 63 | NA | NA | NA | 79 | NA | NA | NA | NA | 74 | 92 | 79 | 81 | 91 | |
| 43N093 | Sinsin | 81 | 84 | 85 | 75 | 92 | 87 | 76 | 60 | NA | NA | NA | 85 | 85 | 80 | |
| 43N100 | Dourbes | 83 | 85 | 91 | 79 | 87 | 86 | 81 | 90 | 90 | 84 | 96 | 87 | 83 | 84 | |
| 43N113 | Saint-Ode | 86 | 85 | 92 | 82 | 86 | 84 | 79 | 57 | NA | NA | NA | 84 | 79 | 80 | |
| 43N121 | Offagne | 76 | 79 | 88 | 83 | 81 | 84 | 74 | 65 | NA | NA | NA | 82 | 85 | 76 | |
| 43N132 | Habay-La-Neuve | 82 | 86 | 87 | 87 | 88 | 85 | 77 | 57 | NA | NA | NA | 79 | 78 | 82 | |
| 43R221 | Herstal | 44 | NA | NA | NA | 61 | 79 | 71 | 80 | 71 | 73 | 86 | 79 | 75 | 82 | |
| 43R222 | Liège (ISSeP) | 69 | NA | NA | NA | 64 | 79 | 71 | 20 | NA | NA | NA | NA | NA | 86 | |
| 43R240 | Engis | 34 | NA | NA | NA | 63 | 76 | 68 | 81 | 78 | 77 | 86 | 81 | 72 | 78 | |
| 43R401 | Namur | 56 | NA | NA | NA | 71 | 83 | 76 | 79 | 81 | 80 | 91 | 84 | 80 | 83 | |
| 45R502 | Lodelinsart | 69 | 72 | 83 | 43 | 61 | 78 | 70 | 84 | 81 | 81 | 88 | 85 | 66 | 80 | |
| Interpolated spatial average in : | ||||||||||||||||
| Brussels | 72 | 72 | 76 | 65 | 64 | 80 | 73 | 78 | 72 | 78 | 93 | 93 | 74 | 82 | ||
| Flanders | 82 | 85 | 87 | 73 | 71 | 83 | 77 | 88 | 76 | 85 | 99 | 94 | 83 | 86 | ||
| Wallonia | 79 | 82 | 87 | 71 | 76 | 82 | 74 | 88 | 84 | 80 | 93 | 84 | 77 | 81 | ||
| Belgium | 80 | 83 | 87 | 72 | 74 | 82 | 75 | 88 | 81 | 82 | 96 | 88 | 80 | 83 | ||
| % 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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