previous 14 days
O3 concentrations per day (µg/m3), 29/03/2026 - 11/04/2026
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

Codecity29/0330/0331/0301/0402/0403/0404/0405/0406/0407/0408/0409/0410/0411/04
41B011 Sint-Agatha-Berchem 81 85.5 75 84.5 78 81 75 85.5 91.5 103.5 100.5 102 80 84
41MEU1 Neder-Over-Heembeek 76 87 75.5 86 76.5 72.5 69.5 81 91 108 102 102.5 80.5 88.5
41N043 Voorhaven (Haren) 73 84.5 71.5 74 65 68.5 66.5 77.5 84 99.5 94.5 98.5 75.5 80
41R001 Sint-Jans-Molenbeek 72 75 60.5 66.5 62 70 66 76.5 80.5 96.5 89.5 94 71.5 82
41R012 Ukkel 77 81 74.5 83.5 76.5 78.5 75 86 89 108.5 102 108.5 82 90
42N016 Dessel 80 87.5 83 93 79.5 87 82 84.5 98 100 107.5 112 84 95
42N027 Bree 85 87.5 80.5 69 73.5 77 NA NA NA 93 101.5 112 83 94.5
42N035 Aarschot 84.5 89 83 92.5 78 87.5 83.5 89 97.5 107 125.5 120.5 83.5 94.5
42N040 Sint-Pieters-Leeuw 78 84 71.5 85.5 75 77.5 73.5 83 95.5 106.5 107 106 84 85.5
42N046 Gellik 88 89 68.5 82.5 67 84 82.5 88.5 95.5 97 98.5 114 84 95.5
42N047 Hasselt 85.5 85.5 81.5 86.5 79 84.5 82 89 97 100.5 120 116.5 83 94
42R801 Borgerhout 79.5 87.5 72 89 78 79.5 77.5 85.5 97.5 100 112.5 111 84 87.5
42R811 Schoten 81.5 89.5 83.5 102 82.5 81 81.5 86.5 98.5 104.5 118 117 83.5 93
42R842 Mechelen (Hendrik Speecqvest) 76 84 72.5 83 74 81 72.5 81.5 89.5 99.5 105.5 97 80.5 89.5
44M705 Roeselare (Haven) 83.5 86.5 82 NA 44 83 85.5 86.5 90.5 109 110 106 91 95.5
44N012 Moerkerke 83.5 88 NA 75 83.5 79.5 80.5 85.5 96 96 103.5 96 88.5 92
44N029 Houtem (Veurne) 81 88.5 81.5 63.5 85.5 75 76.5 82.5 90.5 100 112.5 101 90 86
44R701 Gent (Baudelopark) 81 86 73 83 81.5 75.5 77.5 88.5 97 103 112.5 108 86 85.5
44R710 Destelbergen 81 87 77 86 82.5 78 80 90 97 106 114 112.5 85 89.5
43N060 Havinnes 68 72.5 66 71 72.5 64 67.5 70.5 84.5 90 108 100 80.5 78.5
43N064 Rixensart 85.5 91 79 93 82 85.5 75.5 90 96 107 106 112 87 96
43N066 Eupen 81 78.5 70.5 85.5 66 83.5 74.5 82.5 86.5 98 89.5 100.5 78 92
43N070 Mons 73 81 70 81.5 77.5 69 64 78.5 90.5 96 111 94 81.5 75
43N073 Vezin 81 83 80 87.5 69 81 76.5 83.5 90 98.5 99.5 102 83.5 93.5
43N085 Vielsalm 77.5 72.5 71 84 72 76 65.5 83.5 88 96 95.5 101.5 85 91.5
43N093 Sinsin 86 86.5 84.5 85 66 81 77 88.5 90 96 98.5 104 88 89.5
43N100 Dourbes 89 89 93.5 97 76 86 79.5 93.5 94.5 108.5 110 112.5 92 96.5
43N113 Saint-Ode 85 86.5 87.5 89.5 86 82.5 74 92.5 87 98 96 104 86.5 86
43N121 Offagne 77.5 74.5 68 69.5 68.5 69.5 47.5 86 62.5 84.5 71.5 89 65 80
43N132 Habay-La-Neuve 78.5 82 85 87 79.5 77.5 66 80.5 91 98 92 102.5 84 79.5
43R221 Herstal 85 84.5 71 85.5 61 80 74.5 86.5 89.5 98 93 113.5 84 95.5
43R222 Liège (ISSeP) 87.5 84.5 74.5 84 59 84 78 88 92 100.5 98 108 84.5 97.5
43R240 Engis 80.5 77 75.5 78 56 79.5 73.5 83.5 88.5 98.5 88.5 105 81.5 91
43R401 Namur 82.5 84 80.5 85 65.5 80.5 77.5 87.5 89 90.5 94.5 102.5 87.5 91
45R502 Lodelinsart 75 77.5 68 81 66 72 66.5 77.5 84.5 91 100 95.5 78 89
 
Interpolated spatial average in :
Brussels778472817376718289102991027986
Flanders8187788278807985951011081058590
Wallonia80817783697770838795961008286
Belgium808478837379748491981011028388
 
% 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

© IRCEL - CELINE