previous 14 days
O3 concentrations per day (µg/m3), 12/04/2026 - 25/04/2026
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

Codecity12/0413/0414/0415/0416/0417/0418/0419/0420/0421/0422/0423/0424/0425/04
41B011 Sint-Agatha-Berchem 67 68 88.5 93.5 90.5 93 47 82 78 89.5 102.5 98.5 91 94
41MEU1 Neder-Over-Heembeek 71.5 75.5 90 99 90 95.5 52 87 81.5 92 106.5 103 92.5 93
41N043 Voorhaven (Haren) 68 63.5 82 87.5 86 88.5 46 85.5 78.5 88.5 100 95.5 86 91.5
41R001 Sint-Jans-Molenbeek 66 55.5 78.5 89.5 83.5 87.5 49 79 71 82.5 95.5 89.5 82.5 84
41R012 Ukkel 74 73.5 90.5 99 94 98.5 57 90 86.5 96.5 107.5 104.5 101 98
42N016 Dessel 78 85 94 107 92.5 102.5 68 95.5 89.5 100.5 112 111 107 107.5
42N027 Bree 83.5 87 96 107.5 NA 107 76.5 94 94 97.5 103 107.5 108 108
42N035 Aarschot 79 91 97 112 95 102.5 63 96 94 101.5 110.5 105 103 108.5
42N040 Sint-Pieters-Leeuw 70 68.5 90.5 94 93 97 52.5 84 83.5 92.5 107 103 100 92.5
42N046 Gellik 83.5 90.5 91 106.5 95.5 107 81 94 93 93 110 106.5 103 105
42N047 Hasselt 81.5 85 91.5 106 92 102 65.5 93.5 91 96 109.5 104.5 100.5 100
42R801 Borgerhout 79.5 77.5 95 103.5 98 98.5 65 92 85 94.5 108 106 89 87
42R811 Schoten 81 82 101.5 108.5 101 104 59.5 92 54.5 95.5 65 108 95 97
42R842 Mechelen (Hendrik Speecqvest) 76.5 72.5 86.5 97.5 88.5 87.5 55.5 88.5 78 89 101.5 96.5 91 93.5
44M705 Roeselare (Haven) 82 79 102.5 95.5 91 93.5 90.5 88 88.5 91.5 111 98.5 96.5 92
44N012 Moerkerke 78.5 81.5 97.5 98.5 87 93.5 81 92.5 89 92 107 102.5 99.5 96
44N029 Houtem (Veurne) 79 88 92.5 76.5 84 88 97 90.5 89.5 87.5 97 96.5 97.5 97
44R701 Gent (Baudelopark) 80 71 98.5 96.5 89.5 91.5 75 87 87.5 93.5 109.5 99 93.5 101
44R710 Destelbergen 82 75 98 98.5 95 95.5 67.5 88 88 95 110 96 87 99.5
43N060 Havinnes 68.5 62 89 83 82.5 83 63 78 81 81.5 97 101 87.5 95.5
43N064 Rixensart 74.5 82 92 104.5 98 104.5 61 93 93 99.5 117.5 110 112 102.5
43N066 Eupen 78.5 81 92 98.5 86.5 104 89.5 84.5 88.5 81 108 100.5 100 111.5
43N070 Mons 56 59.5 86.5 85.5 81.5 92.5 56 85.5 89.5 94.5 110 106.5 104 101.5
43N073 Vezin 79 76.5 91 103.5 85.5 96.5 66 88.5 88.5 86.5 107 106 103 95
43N085 Vielsalm 80 89 87 96.5 95 105 91.5 85 92 86 106.5 105 107 103
43N093 Sinsin 81.5 72.5 88.5 101 93 94 89.5 91 91 83 107 110.5 104.5 101.5
43N100 Dourbes 87.5 81 94.5 109.5 100.5 104.5 97.5 94.5 100 96 115.5 120.5 116.5 111.5
43N113 Saint-Ode 82 91.5 87 98.5 95.5 103.5 93 92.5 89.5 88.5 107.5 108 106 104
43N121 Offagne 68 73 53 86 75.5 65.5 70 NA NA 71.5 88.5 97 97.5 91
43N132 Habay-La-Neuve 80.5 86.5 84 87.5 94 94.5 97 92 85.5 89.5 106 103 108.5 104
43R221 Herstal 88.5 83.5 84.5 108.5 91 103 82.5 92 92.5 89 108 116 99.5 100
43R222 Liège (ISSeP) 81.5 84.5 87 106 91 103 79.5 92 90.5 87.5 113 108.5 101.5 99.5
43R240 Engis 76.5 80.5 85.5 103.5 87 96 67 87 89 87.5 110 99.5 102 94
43R401 Namur 80 78 91 102 92.5 97.5 64 87.5 88.5 83.5 102 101 92.5 94
45R502 Lodelinsart 65.5 71.5 84 95 75 87 58.5 84 87 87.5 104.5 102.5 101 95.5
 
Interpolated spatial average in :
Brussels707087959094498681921041009393
Flanders787895999196679088931061019697
Wallonia7475849588937487898710410310198
Belgium767689978994718989901051029997
 
% 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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