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O3 concentrations per day (µg/m3), 05/01/2026 - 18/01/2026
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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

Codecity05/0106/0107/0108/0109/0110/0111/0112/0113/0114/0115/0116/0117/0118/01
41B011 Sint-Agatha-Berchem 48.5 45.5 59.5 59 76 48.5 55.5 58.5 40 36.5 67.5 76 51.5 26
41MEU1 Neder-Over-Heembeek 36 43 53 57.5 73.5 50.5 55 56.5 41.5 38.5 65 70.5 52 34
41N043 Voorhaven (Haren) 22.5 31.5 44.5 49.5 66 44 48 50 35.5 30.5 56 67 41 24.5
41R001 Sint-Jans-Molenbeek 26 38 48 54 71.5 33.5 47.5 52.5 35 30.5 57.5 63 38.5 17.5
41R012 Ukkel 43.5 46 59.5 61 76 45 54 59 46.5 39 72 69.5 49 49
42N016 Dessel 46 44.5 58 46.5 69.5 54 50 53 39 42.5 66 62.5 47.5 30.5
42N027 Bree 54 64.5 67 54.5 77.5 50.5 54.5 61 48.5 46 62.5 74 41.5 22
42N035 Aarschot 52 52.5 61 55 74.5 47.5 53 58.5 46.5 42 73 71.5 54.5 39
42N040 Sint-Pieters-Leeuw 44.5 52.5 60 62 73.5 47 56.5 59.5 44 40 70 72.5 54 53
42N046 Gellik 52.5 54.5 63 53.5 75 48.5 54.5 62 46 46.5 65 71.5 54.5 29.5
42N047 Hasselt 50.5 52.5 62 48.5 32.5 47 51.5 60.5 48 44 63.5 72.5 58 30
42R801 Borgerhout 35 38.5 53.5 45.5 68.5 47.5 48.5 51 36.5 33.5 57 68 35 38.5
42R811 Schoten 40 39.5 54.5 49.5 75.5 48 51 53 37.5 45 64.5 75 43.5 43.5
42R842 Mechelen (Hendrik Speecqvest) 42 45 55.5 52.5 75.5 44 54.5 57.5 39.5 37.5 63 72.5 47 35
44M705 Roeselare (Haven) 56.5 51 54.5 69 73.5 59 56.5 71 42 49.5 61 76 54.5 45
44N012 Moerkerke 66.5 62 56 55.5 73 52.5 57.5 67.5 41 53.5 60.5 71.5 53 20.5
44N029 Houtem (Veurne) 68.5 65.5 59 71.5 77 59.5 59.5 70.5 47.5 59.5 61.5 70.5 48.5 34.5
44R701 Gent (Baudelopark) 47 40.5 53 65 78 47.5 56.5 59.5 40 39.5 64.5 77 53 47.5
44R710 Destelbergen NA 44.5 57 66 75.5 45.5 58.5 60 41 40 66 76.5 54.5 49
43N060 Havinnes 30.5 31.5 52 54.5 72.5 52.5 54 53.5 40 36 58 73 42 46.5
43N064 Rixensart 56 52 64 62.5 79.5 51 59 62.5 52.5 44.5 78 73.5 62 42
43N066 Eupen 59.5 53 61 51 64 41 48.5 55.5 44 46.5 59.5 61.5 65.5 44.5
43N070 Mons 10.5 NA 54 60 74.5 47 55 55.5 39.5 38 64 64.5 51 47
43N073 Vezin 49 54.5 63 62.5 77.5 47.5 57 60.5 52 49 66.5 72.5 67.5 58.5
43N085 Vielsalm 56.5 58 60 47 NA 41 50 51.5 38 38.5 50.5 56.5 45.5 51.5
43N093 Sinsin 52 59 68 68 82.5 48.5 58.5 65 52.5 53.5 69.5 74.5 72 44.5
43N100 Dourbes 53.5 57 63.5 72.5 79 54.5 58 59 52.5 51 68.5 70.5 69.5 59.5
43N113 Saint-Ode 57 64.5 67 67.5 81 50 58 60 51.5 52 66.5 70.5 69.5 68
43N121 Offagne 40.5 45 56 53 65.5 36.5 45.5 47 NA 27 56 54 51.5 46.5
43N132 Habay-La-Neuve 52 59 61.5 61.5 72 53 48.5 50.5 47 42.5 62 64 57 49
43R221 Herstal 44.5 53.5 59 48 73 40.5 49.5 59 46 45 63 70.5 59.5 19.5
43R222 Liège (ISSeP) 54.5 58.5 65 60 79 41.5 55.5 65 52.5 49.5 70 74 64.5 19.5
43R240 Engis 51 50 60 51 68 38 49.5 55 44.5 43.5 63.5 68 61 21
43R401 Namur 44 51.5 57 58.5 77 NA 53 57 48.5 47.5 65 70.5 55.5 30
45R502 Lodelinsart 35.5 42 51.5 54 66.5 41 48 53 41.5 36 62.5 62.5 53.5 44.5
 
Interpolated spatial average in :
Brussels3642555874415256433666704630
Flanders4949615877515661444566755136
Wallonia4752646176475358484564675844
Belgium4851626077495559464565715540
 
% 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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