previous 14 days
O3 concentrations per day (µg/m3), 13/04/2026 - 26/04/2026
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

Codecity13/0414/0415/0416/0417/0418/0419/0420/0421/0422/0423/0424/0425/0426/04
41B011 Sint-Agatha-Berchem 68 88.5 93.5 90.5 93 47 82 78 89.5 102.5 98.5 91 94 96.5
41MEU1 Neder-Over-Heembeek 75.5 90 99 90 95.5 52 87 81.5 92 106.5 103 92.5 93 100.5
41N043 Voorhaven (Haren) 63.5 82 87.5 86 88.5 46 85.5 78.5 88.5 100 95.5 86 91.5 96.5
41R001 Sint-Jans-Molenbeek 55.5 78.5 89.5 83.5 87.5 49 79 71 82.5 95.5 89.5 82.5 84 93.5
41R012 Ukkel 73.5 90.5 99 94 98.5 57 90 86.5 96.5 107.5 104.5 101 98 105.5
42N016 Dessel 85 94 107 92.5 102.5 68 95.5 89.5 100.5 112 111 107 107.5 110.5
42N027 Bree 87 96 107.5 NA 107 76.5 94 94 97.5 103 107.5 108 108 107
42N035 Aarschot 91 97 112 95 102.5 63 96 94 101.5 110.5 105 103 108.5 109.5
42N040 Sint-Pieters-Leeuw 68.5 90.5 94 93 97 52.5 84 83.5 92.5 107 103 100 92.5 101
42N046 Gellik 90.5 91 106.5 95.5 107 81 94 93 93 110 106.5 103 105 106.5
42N047 Hasselt 85 91.5 106 92 102 65.5 93.5 91 96 109.5 104.5 100.5 100 106
42R801 Borgerhout 77.5 95 103.5 98 98.5 65 92 85 94.5 108 106 89 87 105.5
42R811 Schoten 82 101.5 108.5 101 104 59.5 92 54.5 95.5 65 108 95 97 106.5
42R842 Mechelen (Hendrik Speecqvest) 72.5 86.5 97.5 88.5 87.5 55.5 88.5 78 89 101.5 96.5 91 93.5 96.5
44M705 Roeselare (Haven) 79 102.5 95.5 91 93.5 90.5 88 88.5 91.5 111 98.5 96.5 92 114
44N012 Moerkerke 81.5 97.5 98.5 87 93.5 81 92.5 89 92 107 102.5 99.5 96 93
44N029 Houtem (Veurne) 88 92.5 76.5 84 88 97 90.5 89.5 87.5 97 96.5 97.5 97 95.5
44R701 Gent (Baudelopark) 71 98.5 96.5 89.5 91.5 75 87 87.5 93.5 109.5 99 93.5 101 99
44R710 Destelbergen 75 98 98.5 95 95.5 67.5 88 88 95 110 96 87 99.5 104.5
43N060 Havinnes 62 89 83 82.5 83 63 78 81 81.5 97 101 87.5 95.5 105.5
43N064 Rixensart 82 92 104.5 98 104.5 61 93 93 99.5 117.5 110 112 102.5 110
43N066 Eupen 81 92 98.5 86.5 104 89.5 84.5 88.5 81 108 100.5 100 111.5 93
43N070 Mons 59.5 86.5 85.5 81.5 92.5 56 85.5 89.5 94.5 110 106.5 104 101.5 109
43N073 Vezin 76.5 91 103.5 85.5 96.5 66 88.5 88.5 86.5 107 106 103 95 109
43N085 Vielsalm 89 87 96.5 95 105 91.5 85 92 86 106.5 105 107 103 101.5
43N093 Sinsin 72.5 88.5 101 93 94 89.5 91 91 83 107 110.5 104.5 101.5 98.5
43N100 Dourbes 81 94.5 109.5 100.5 104.5 97.5 94.5 100 96 115.5 120.5 116.5 111.5 117
43N113 Saint-Ode 91.5 87 98.5 95.5 103.5 93 92.5 89.5 88.5 107.5 108 106 104 107.5
43N121 Offagne 73 53 86 75.5 65.5 70 NA NA 71.5 88.5 97 97.5 91 92.5
43N132 Habay-La-Neuve 86.5 84 87.5 94 94.5 97 92 85.5 89.5 106 103 108.5 104 106.5
43R221 Herstal 83.5 84.5 108.5 91 103 82.5 92 92.5 89 108 116 99.5 100 104
43R222 Liège (ISSeP) 84.5 87 106 91 103 79.5 92 90.5 87.5 113 108.5 101.5 99.5 101
43R240 Engis 80.5 85.5 103.5 87 96 67 87 89 87.5 110 99.5 102 94 105.5
43R401 Namur 78 91 102 92.5 97.5 64 87.5 88.5 83.5 102 101 92.5 94 108.5
45R502 Lodelinsart 71.5 84 95 75 87 58.5 84 87 87.5 104.5 102.5 101 95.5 100
 
Interpolated spatial average in :
Brussels7087959094498681921041009393100
Flanders7895999196679088931061019697102
Wallonia75849588937487898710410310198101
Belgium7689978994718989901051029997102
 
% 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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