previous 14 days
O3 concentrations per day (µg/m3), 30/03/2026 - 12/04/2026
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

Codecity30/0331/0301/0402/0403/0404/0405/0406/0407/0408/0409/0410/0411/0412/04
41B011 Sint-Agatha-Berchem 85.5 75 84.5 78 81 75 85.5 91.5 103.5 100.5 102 80 84 67
41MEU1 Neder-Over-Heembeek 87 75.5 86 76.5 72.5 69.5 81 91 108 102 102.5 80.5 88.5 71.5
41N043 Voorhaven (Haren) 84.5 71.5 74 65 68.5 66.5 77.5 84 99.5 94.5 98.5 75.5 80 68
41R001 Sint-Jans-Molenbeek 75 60.5 66.5 62 70 66 76.5 80.5 96.5 89.5 94 71.5 82 66
41R012 Ukkel 81 74.5 83.5 76.5 78.5 75 86 89 108.5 102 108.5 82 90 74
42N016 Dessel 87.5 83 93 79.5 87 82 84.5 98 100 107.5 112 84 95 78
42N027 Bree 87.5 80.5 69 73.5 77 NA NA NA 93 101.5 112 83 94.5 83.5
42N035 Aarschot 89 83 92.5 78 87.5 83.5 89 97.5 107 125.5 120.5 83.5 94.5 79
42N040 Sint-Pieters-Leeuw 84 71.5 85.5 75 77.5 73.5 83 95.5 106.5 107 106 84 85.5 70
42N046 Gellik 89 68.5 82.5 67 84 82.5 88.5 95.5 97 98.5 114 84 95.5 83.5
42N047 Hasselt 85.5 81.5 86.5 79 84.5 82 89 97 100.5 120 116.5 83 94 81.5
42R801 Borgerhout 87.5 72 89 78 79.5 77.5 85.5 97.5 100 112.5 111 84 87.5 79.5
42R811 Schoten 89.5 83.5 102 82.5 81 81.5 86.5 98.5 104.5 118 117 83.5 93 81
42R842 Mechelen (Hendrik Speecqvest) 84 72.5 83 74 81 72.5 81.5 89.5 99.5 105.5 97 80.5 89.5 76.5
44M705 Roeselare (Haven) 86.5 82 NA 44 83 85.5 86.5 90.5 109 110 106 91 95.5 82
44N012 Moerkerke 88 NA 75 83.5 79.5 80.5 85.5 96 96 103.5 96 88.5 92 78.5
44N029 Houtem (Veurne) 88.5 81.5 63.5 85.5 75 76.5 82.5 90.5 100 112.5 101 90 86 79
44R701 Gent (Baudelopark) 86 73 83 81.5 75.5 77.5 88.5 97 103 112.5 108 86 85.5 80
44R710 Destelbergen 87 77 86 82.5 78 80 90 97 106 114 112.5 85 89.5 82
43N060 Havinnes 72.5 66 71 72.5 64 67.5 70.5 84.5 90 108 100 80.5 78.5 68.5
43N064 Rixensart 91 79 93 82 85.5 75.5 90 96 107 106 112 87 96 74.5
43N066 Eupen 78.5 70.5 85.5 66 83.5 74.5 82.5 86.5 98 89.5 100.5 78 92 78.5
43N070 Mons 81 70 81.5 77.5 69 64 78.5 90.5 96 111 94 81.5 75 56
43N073 Vezin 83 80 87.5 69 81 76.5 83.5 90 98.5 99.5 102 83.5 93.5 79
43N085 Vielsalm 72.5 71 84 72 76 65.5 83.5 88 96 95.5 101.5 85 91.5 80
43N093 Sinsin 86.5 84.5 85 66 81 77 88.5 90 96 98.5 104 88 89.5 81.5
43N100 Dourbes 89 93.5 97 76 86 79.5 93.5 94.5 108.5 110 112.5 92 96.5 87.5
43N113 Saint-Ode 86.5 87.5 89.5 86 82.5 74 92.5 87 98 96 104 86.5 86 82
43N121 Offagne 74.5 68 69.5 68.5 69.5 47.5 86 62.5 84.5 71.5 89 65 80 68
43N132 Habay-La-Neuve 82 85 87 79.5 77.5 66 80.5 91 98 92 102.5 84 79.5 80.5
43R221 Herstal 84.5 71 85.5 61 80 74.5 86.5 89.5 98 93 113.5 84 95.5 88.5
43R222 Liège (ISSeP) 84.5 74.5 84 59 84 78 88 92 100.5 98 108 84.5 97.5 81.5
43R240 Engis 77 75.5 78 56 79.5 73.5 83.5 88.5 98.5 88.5 105 81.5 91 76.5
43R401 Namur 84 80.5 85 65.5 80.5 77.5 87.5 89 90.5 94.5 102.5 87.5 91 80
45R502 Lodelinsart 77.5 68 81 66 72 66.5 77.5 84.5 91 100 95.5 78 89 65.5
 
Interpolated spatial average in :
Brussels847281737671828910299102798670
Flanders8778827880798595101108105859078
Wallonia81778369777083879596100828674
Belgium847883737974849198101102838876
 
% 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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