| Code | city | 21/10 | 22/10 | 23/10 | 24/10 | 25/10 | 26/10 | 27/10 | 28/10 | 29/10 | 30/10 | 31/10 | 01/11 | 02/11 | 03/11 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 41B011 | Sint-Agatha-Berchem | 58 | 52 | 69 | 60 | 59 | 57 | 56 | 64 | 55 | 59 | 43 | 64 | 61 | 46 | |
| 41MEU1 | Neder-Over-Heembeek | 56 | 50 | 68 | 57 | 52 | 56 | 54 | 58 | 55 | 59 | 45 | 62 | 60 | 48 | |
| 41N043 | Voorhaven (Haren) | 54 | 47 | 61 | 52 | 56 | 57 | 51 | 59 | 51 | 58 | 40 | 59 | 59 | 48 | |
| 41R001 | Sint-Jans-Molenbeek | 58 | 46 | 65 | 56 | 56 | 52 | 54 | 51 | 50 | 55 | 41 | 58 | 55 | 45 | |
| 41R012 | Ukkel | 61 | 49 | 74 | 63 | 61 | 60 | 58 | 65 | 58 | 63 | 47 | 67 | 62 | 54 | |
| 42N016 | Dessel | NA | NA | NA | 60 | 67 | 62 | 57 | 57 | 54 | 61 | 41 | 59 | 54 | 47 | |
| 42N027 | Bree | NA | NA | NA | NA | NA | 67 | 64 | 68 | 68 | 69 | 48 | 74 | 69 | 62 | |
| 42N035 | Aarschot | NA | NA | NA | 67 | 61 | 62 | 61 | 67 | 60 | 67 | 46 | 68 | 66 | 57 | |
| 42N040 | Sint-Pieters-Leeuw | 63 | 56 | 73 | 63 | 60 | 60 | 61 | 66 | 60 | 66 | 49 | 71 | 68 | 53 | |
| 42N046 | Gellik | NA | NA | NA | NA | NA | 61 | 62 | 64 | 65 | 67 | 43 | 71 | 68 | 57 | |
| 42N047 | Hasselt | NA | NA | NA | 66 | 63 | 65 | 65 | 65 | 62 | 68 | 45 | 72 | 69 | 60 | |
| 42R801 | Borgerhout | 62 | NA | 72 | 62 | 60 | 64 | 60 | 62 | 53 | 64 | 33 | 61 | 60 | 46 | |
| 42R811 | Schoten | 60 | 50 | 75 | 66 | 61 | 64 | 62 | 61 | 55 | 58 | 43 | 63 | 65 | 46 | |
| 42R842 | Mechelen (Hendrik Speecqvest) | 62 | 49 | 75 | 66 | 63 | 60 | 60 | 64 | 56 | 64 | 43 | 68 | 65 | 52 | |
| 44M705 | Roeselare (Haven) | 68 | 65 | 81 | 73 | 63 | 67 | 62 | 69 | 66 | 66 | 49 | 74 | 73 | 55 | |
| 44N012 | Moerkerke | 68 | 62 | 75 | 70 | 67 | 66 | 68 | 69 | 58 | 58 | 50 | 72 | 74 | 56 | |
| 44N029 | Houtem (Veurne) | 74 | 67 | 85 | 74 | 74 | 71 | 67 | 74 | NA | NA | 43 | 72 | 71 | 63 | |
| 44R701 | Gent (Baudelopark) | 64 | 53 | 75 | 66 | 62 | 64 | 60 | 67 | 68 | 61 | 47 | 66 | 67 | 51 | |
| 44R710 | Destelbergen | 64 | 50 | 75 | 67 | 61 | 65 | 59 | 70 | 63 | 63 | 52 | 68 | 72 | 53 | |
| 43N060 | Havinnes | 74 | 68 | 78 | 73 | 67 | 69 | 69 | 73 | 69 | 65 | 54 | 70 | 73 | 53 | |
| 43N064 | Rixensart | 67 | 69 | 78 | 64 | 64 | 65 | 63 | 69 | 62 | 70 | 51 | 72 | 69 | 55 | |
| 43N066 | Eupen | 62 | 57 | 68 | 57 | 59 | 58 | 54 | 60 | 59 | 63 | 55 | 69 | 61 | 59 | |
| 43N070 | Mons | 55 | 48 | 65 | 51 | 54 | 49 | 50 | 48 | 37 | 49 | 38 | 49 | 52 | 46 | |
| 43N073 | Vezin | 68 | 65 | 72 | 63 | 63 | 66 | 61 | 67 | 57 | 69 | 52 | 72 | 66 | 57 | |
| 43N085 | Vielsalm | 56 | 47 | 67 | 58 | 52 | 52 | 61 | 57 | 58 | 64 | 41 | 73 | 58 | 51 | |
| 43N093 | Sinsin | 70 | 66 | 76 | 64 | 63 | 65 | 65 | 68 | 64 | 68 | 52 | 78 | 67 | 59 | |
| 43N100 | Dourbes | 65 | 64 | 75 | 65 | 61 | 65 | 66 | 63 | 70 | 64 | 57 | 75 | 64 | 57 | |
| 43N113 | Saint-Ode | 70 | 61 | 76 | 66 | 64 | 62 | 67 | 65 | 70 | 69 | 56 | 84 | 70 | 65 | |
| 43N121 | Offagne | 66 | 63 | 71 | 51 | 46 | 56 | 50 | 37 | 48 | 47 | 45 | 46 | 45 | 37 | |
| 43N132 | Habay-La-Neuve | 63 | 54 | 73 | 61 | 59 | 59 | 65 | 60 | 58 | 62 | 40 | 72 | 60 | 49 | |
| 43R221 | Herstal | 64 | 65 | 74 | 58 | 62 | 62 | 59 | 55 | 55 | 63 | 40 | 65 | 66 | 60 | |
| 43R222 | Liège (ISSeP) | 66 | 66 | 74 | 64 | 65 | 66 | 62 | 65 | 62 | 63 | 50 | 76 | 68 | 60 | |
| 43R240 | Engis | 56 | 57 | 63 | 53 | 51 | 57 | 52 | 54 | 47 | 60 | 43 | 55 | 55 | 52 | |
| 43R401 | Namur | 67 | 65 | 74 | 63 | 64 | 66 | 61 | 72 | 54 | 68 | 45 | 79 | 68 | 60 | |
| 45R502 | Lodelinsart | 55 | 59 | 67 | 52 | 52 | 52 | 54 | 48 | 50 | 54 | 42 | 56 | 55 | 46 | |
| Interpolated spatial average in : | ||||||||||||||||
| Brussels | 59 | 51 | 71 | 58 | 59 | 56 | 57 | 63 | 54 | 61 | 44 | 63 | 60 | 49 | ||
| Flanders | 66 | 61 | 82 | 69 | 62 | 65 | 64 | 69 | 64 | 67 | 48 | 68 | 67 | 55 | ||
| Wallonia | 65 | 61 | 76 | 60 | 59 | 59 | 61 | 60 | 58 | 62 | 46 | 66 | 60 | 54 | ||
| Belgium | 66 | 61 | 79 | 64 | 60 | 62 | 63 | 64 | 60 | 64 | 47 | 67 | 63 | 54 | ||
| % 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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