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O3 concentrations per day (µg/m3), 21/08/2026 - 03/09/2026
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- 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

Codecity21/0822/0823/0824/0825/0826/0827/0828/0829/0830/0831/0801/0902/0903/09
41B011 Sint-Agatha-Berchem 71.5 88 104 109.5 106.5 111 113.5 77 71 80.5 62.5 89 78 60
41MEU1 Neder-Over-Heembeek 72 89 107.5 105.5 110.5 106 105 70.5 69.5 78 58.5 85.5 75 58.5
41N043 Voorhaven (Haren) 68.5 NA 65.5 102.5 104.5 105 98 67 66.5 73.5 58.5 84.5 70 54
41R001 Sint-Jans-Molenbeek 65.5 80.5 95.5 103.5 101.5 102.5 108.5 74 66 77 58 86 75.5 58
41R012 Ukkel 72 88.5 107.5 107 107.5 105.5 110.5 71.5 63.5 75.5 57 91 72.5 66
42N016 Dessel 78.5 96.5 100 115.5 103.5 132 118 73 73 82 81 93.5 84 62
42N027 Bree 86 103 102.5 110.5 108 124 128.5 98 81 87.5 69.5 97.5 95 67.5
42N035 Aarschot 86 101.5 115.5 114.5 121 116 128 93 77.5 88.5 71.5 95 89 69.5
42N040 Sint-Pieters-Leeuw 73.5 87 97 105.5 110.5 114 116 78 70 79.5 64 91 80 60.5
42N046 Gellik 86 100 108 110.5 89.5 118.5 122.5 101 80 86.5 68 93 94.5 66
42N047 Hasselt 80.5 99 105 106.5 108 122.5 122 94 77.5 82.5 61.5 92 89.5 61.5
42R801 Borgerhout 78.5 93.5 107.5 113 100 118 117.5 73.5 77 81 79.5 90 80 71
42R811 Schoten 76 92 107.5 117.5 102.5 127 128 77.5 78.5 84.5 81 88.5 83.5 71
42R842 Mechelen (Hendrik Speecqvest) 64 89.5 99 108 109.5 102.5 101 78 74 80 64.5 75 69.5 64.5
44M705 Roeselare (Haven) 70.5 93.5 105.5 110.5 116 122.5 131 89.5 79 NA 75 97.5 84 75.5
44N012 Moerkerke 78 90 100 111.5 116.5 122 127 81.5 87.5 96 81 94 79 72.5
44N029 Houtem (Veurne) 73.5 93 107.5 115.5 130 125.5 116.5 85.5 81.5 89 72 89 77 64
44R701 Gent (Baudelopark) 70 85.5 98.5 117 117.5 117.5 128.5 77 84 87 73 94 79.5 69
44R710 Destelbergen 69 89.5 13 77 119.5 120 130.5 75 86.5 93.5 77 99.5 82.5 75.5
43N060 Havinnes 67.5 87.5 97.5 102 108.5 111 111 68 70.5 77.5 62.5 84 75 50.5
43N064 Rixensart 78 96.5 115.5 113 116 111.5 116.5 90 73.5 84 69 101.5 87 68
43N066 Eupen 77.5 88 101 99 88.5 99 107.5 94 73 76 63 82.5 84 76.5
43N070 Mons 61 82.5 95.5 97.5 104.5 100 90 53.5 48 59.5 43.5 69 64 48.5
43N073 Vezin 79.5 90 109.5 98 102 102 113.5 90 64.5 76 63 88.5 83 64
43N085 Vielsalm 64 63.5 98 94.5 72 93.5 107 81.5 70 67.5 54.5 68.5 74 40
43N093 Sinsin 74.5 92.5 112.5 98.5 89.5 98.5 114 100 72 77 66.5 88.5 84 69.5
43N100 Dourbes 82.5 94 118 111 118.5 107.5 120.5 103 72 79.5 76.5 95.5 91 82
43N113 Saint-Ode 70 73.5 105.5 100 94 103 112.5 96.5 73 70.5 68 84.5 80 69
43N121 Offagne 69 81 109 100.5 93.5 96 113 99.5 70 72 67 85.5 82 67.5
43N132 Habay-La-Neuve 64 77.5 101.5 94.5 89.5 99 111.5 95 67.5 73.5 66 81.5 83.5 71
43R221 Herstal 75.5 97 107 98 88 104.5 110 94 73.5 81.5 64.5 78 90.5 58
43R222 Liège (ISSeP) 80 94 109.5 97 93 104.5 110.5 98 77 80.5 66.5 91.5 92 72
43R240 Engis 67 80 100.5 92.5 89 97 106 83.5 66.5 64.5 59 85.5 85 59
43R401 Namur 79 90 103 91 103.5 103 113.5 92 65 80.5 65 92.5 85.5 65.5
45R502 Lodelinsart 71 91.5 115 100 106 101.5 105 74 62 72 58 81.5 76.5 63.5
 
Interpolated spatial average in :
Brussels718710410610710611074677759897661
Flanders759210211110811812081788472928267
Wallonia7081104989410010987677362838066
Belgium738610310410010811484727867878166
 
% 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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