previous 14 days
O3 concentrations per day (µg/m3), 24/03/2026 - 06/04/2026
next 14 days


- Click on the figures in the table cells to get an evolution graph of daily concentrations
- Click on the date to get an interpolation map
- "NA" means no or not enough data were available

Codecity24/0325/0326/0327/0328/0329/0330/0331/0301/0402/0403/0404/0405/0406/04
41B011 Sint-Agatha-Berchem 97 82 80 79 84 81 86 75 85 78 81 75 86 92
41MEU1 Neder-Over-Heembeek 90 80 80 73 85 76 87 76 86 77 73 70 81 91
41N043 Voorhaven (Haren) 83 75 77 63 80 73 85 72 74 65 69 67 78 84
41R001 Sint-Jans-Molenbeek 86 76 70 62 71 72 75 61 67 62 70 66 77 81
41R012 Ukkel 97 83 79 79 85 77 81 75 84 77 79 75 86 89
42N016 Dessel 99 83 84 80 88 80 88 83 93 80 87 82 85 98
42N027 Bree 63 82 73 85 87 85 88 81 69 74 77 NA NA NA
42N035 Aarschot 105 86 86 85 88 85 89 83 93 78 88 84 89 98
42N040 Sint-Pieters-Leeuw 91 80 78 78 82 78 84 72 86 75 78 74 83 96
42N046 Gellik 91 88 82 85 90 88 89 69 83 67 84 83 89 96
42N047 Hasselt 94 85 80 84 89 86 86 82 87 79 85 82 89 97
42R801 Borgerhout 92 84 81 77 85 80 88 72 89 78 80 78 86 98
42R811 Schoten 96 88 82 78 90 82 90 84 102 83 81 82 87 99
42R842 Mechelen (Hendrik Speecqvest) 94 80 75 74 83 76 84 73 83 74 81 73 82 90
44M705 Roeselare (Haven) 99 87 83 79 89 84 87 82 NA 44 83 86 87 91
44N012 Moerkerke 94 87 83 81 86 84 88 NA 75 84 80 81 86 96
44N029 Houtem (Veurne) 89 83 83 81 86 81 89 82 64 86 75 77 83 91
44R701 Gent (Baudelopark) 107 85 78 76 85 81 86 73 83 82 76 78 89 97
44R710 Destelbergen 105 88 81 79 87 81 87 77 86 83 78 80 90 97
43N060 Havinnes 82 71 73 69 73 68 73 66 71 73 64 68 71 85
43N064 Rixensart 100 86 84 83 90 86 91 79 93 82 86 76 90 96
43N066 Eupen 95 86 70 80 79 81 79 71 86 66 84 75 83 87
43N070 Mons 83 77 78 66 85 73 81 70 82 78 69 64 79 91
43N073 Vezin 96 83 78 83 84 81 83 80 88 69 81 77 84 90
43N085 Vielsalm 94 79 75 76 74 78 73 71 84 72 76 66 84 88
43N093 Sinsin 100 86 80 83 88 86 87 85 85 66 81 77 89 90
43N100 Dourbes 106 90 86 90 95 89 89 94 97 76 86 80 94 95
43N113 Saint-Ode 100 90 86 87 86 85 87 88 90 86 83 74 93 87
43N121 Offagne 92 76 57 70 77 78 75 68 70 69 70 48 86 63
43N132 Habay-La-Neuve 97 83 77 80 82 79 82 85 87 80 78 66 81 91
43R221 Herstal 94 87 76 78 85 85 85 71 86 61 80 75 87 90
43R222 Liège (ISSeP) 98 90 79 83 88 88 85 75 84 59 84 78 88 92
43R240 Engis 95 85 71 82 84 81 77 76 78 56 80 74 84 89
43R401 Namur 97 86 80 83 85 83 84 81 85 66 81 78 88 89
45R502 Lodelinsart 92 79 74 73 82 75 78 68 81 66 72 67 78 85
 
Interpolated spatial average in :
Brussels9281787483778472817376718289
Flanders9887818186818778827880798595
Wallonia9683777982808177836977708387
Belgium9785798084808478837379748491
 
% of the population exposed to O3 concentrations > 180 μg/m³ in:
Brussels0%0%0%0%0%0%0%0%0%0%0%0%0%0%
Flanders0%0%0%0%0%0%0%0%0%0%0%0%0%0%
Wallonia0%0%0%0%0%0%0%0%0%0%0%0%0%0%
Belgium0%0%0%0%0%0%0%0%0%0%0%0%0%0%
 
% of the population exposed to O3 concentrations > 240 μg/m³ in:
Brussels0%0%0%0%0%0%0%0%0%0%0%0%0%0%
Flanders0%0%0%0%0%0%0%0%0%0%0%0%0%0%
Wallonia0%0%0%0%0%0%0%0%0%0%0%0%0%0%
Belgium0%0%0%0%0%0%0%0%0%0%0%0%0%0%

Color legend:Kleurlegende

These data are not validated : they should not be used for any study whatsoever
The use or publication of the data is allowed only when the source (www.irceline.be) is acknowledged

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