previous 14 days
O3 concentrations per day (µg/m3), 21/12/2025 - 03/01/2026
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

Codecity21/1222/1223/1224/1225/1226/1227/1228/1229/1230/1231/1201/0102/0103/01
41B011 Sint-Agatha-Berchem 23 17 34 56 52 18 52 68 34 59 59 64 71 67.5
41MEU1 Neder-Over-Heembeek 25 14 34 57 52 23 54 62 38 66 46 59.5 67.5 64
41N043 Voorhaven (Haren) 20 6 30 55 51 20 52 62 36 59 44 55.5 62.5 57
41R001 Sint-Jans-Molenbeek 17 8 30 45 43 12 35 48 24 48 34 53 54.5 50
41R012 Ukkel 28 25 36 55 50 22 52 61 49 65 50 59.5 68.5 66
42N016 Dessel 22 24 39 57 53 30 57 62 43 63 52 62 68.5 59
42N027 Bree 25 34 38 57 47 26 56 58 42 60 51 71.5 72 68
42N035 Aarschot 36 27 40 58 52 29 59 62 35 60 56 64 71 65.5
42N040 Sint-Pieters-Leeuw 37 28 38 53 49 20 51 65 27 61 51 62.5 68.5 65.5
42N046 Gellik 29 18 40 54 43 30 36 55 32 59 49 66.5 66 65
42N047 Hasselt 33 24 38 59 46 28 59 61 28 58 46 68.5 69 65
42R801 Borgerhout 21 17 34 56 53 22 50 61 33 57 53 67.5 69 60
42R811 Schoten 32 24 38 60 55 29 56 64 27 60 56 70 68 59.5
42R842 Mechelen (Hendrik Speecqvest) 25 19 33 55 52 21 48 57 35 57 48 66 67.5 62
44M705 Roeselare (Haven) 27 18 32 57 54 20 59 72 43 67 64 72.5 73.5 68.5
44N012 Moerkerke 21 15 34 57 55 22 54 68 51 69 67 73.5 73.5 67
44N029 Houtem (Veurne) 24 20 26 53 51 22 52 67 44 69 69 69.5 74 68
44R701 Gent (Baudelopark) 25 13 32 56 50 22 51 68 26 56 58 68.5 68.5 65
44R710 Destelbergen 29 15 37 55 56 26 53 71 27 72 61 72 74.5 67
43N060 Havinnes 26 17 31 54 51 19 49 66 32 53 41 60 70.5 62
43N064 Rixensart 30 17 43 58 50 28 53 64 46 71 49 69.5 75 71
43N066 Eupen 58 48 42 55 42 43 57 62 64 51 41 57.5 62.5 60.5
43N070 Mons 32 19 35 56 50 24 53 64 40 55 25 57 58 55.5
43N073 Vezin 46 24 36 55 41 23 30 53 43 57 54 66 65.5 64.5
43N085 Vielsalm 36 30 37 60 46 41 64 66 67 64 49 60.5 64.5 64.5
43N093 Sinsin 61 28 40 59 47 39 51 61 76 65 57 69 69 71
43N100 Dourbes 53 32 39 60 44 25 40 61 69 73 51 64 68.5 69.5
43N113 Saint-Ode 55 33 40 64 47 46 71 71 73 74 64 68 72 74
43N121 Offagne 45 20 28 52 37 37 63 56 62 59 32 41 37.5 54.5
43N132 Habay-La-Neuve 41 26 37 62 44 38 67 70 74 76 40 57 70.5 61
43R221 Herstal 18 3 38 53 39 21 20 49 1 44 44 63.5 62 58.5
43R222 Liège (ISSeP) 25 13 40 57 42 22 26 60 9 42 56 67.5 64.5 60
43R240 Engis 31 5 35 53 39 20 23 50 14 34 25 44.5 60 60
43R401 Namur 32 18 29 49 38 15 28 46 33 49 56 66.5 60.5 63.5
45R502 Lodelinsart 33 13 30 52 41 17 40 53 37 59 37 54.5 57.5 51.5
 
Interpolated spatial average in :
Brussels2416335449204559295844616461
Flanders2721375953285164336455727366
Wallonia3923375946324761496345626464
Belgium3422375949304962426349676865
 
% 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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