previous 14 days
O3 concentrations per day (µg/m3), 22/12/2025 - 04/01/2026
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

Codecity22/1223/1224/1225/1226/1227/1228/1229/1230/1231/1201/0102/0103/0104/01
41B011 Sint-Agatha-Berchem 17 34 56 52 18 52 68 34 59 59 64 71 67.5 60
41MEU1 Neder-Over-Heembeek 14 34 57 52 23 54 62 38 66 46 59.5 67.5 64 55
41N043 Voorhaven (Haren) 6 30 55 51 20 52 62 36 59 44 55.5 62.5 57 49.5
41R001 Sint-Jans-Molenbeek 8 30 45 43 12 35 48 24 48 34 53 54.5 50 39.5
41R012 Ukkel 25 36 55 50 22 52 61 49 65 50 59.5 68.5 66 49
42N016 Dessel 24 39 57 53 30 57 62 43 63 52 62 68.5 59 50
42N027 Bree 34 38 57 47 26 56 58 42 60 51 71.5 72 68 60.5
42N035 Aarschot 27 40 58 52 29 59 62 35 60 56 64 71 65.5 53
42N040 Sint-Pieters-Leeuw 28 38 53 49 20 51 65 27 61 51 62.5 68.5 65.5 51
42N046 Gellik 18 40 54 43 30 36 55 32 59 49 66.5 66 65 58.5
42N047 Hasselt 24 38 59 46 28 59 61 28 58 46 68.5 69 65 55
42R801 Borgerhout 17 34 56 53 22 50 61 33 57 53 67.5 69 60 57
42R811 Schoten 24 38 60 55 29 56 64 27 60 56 70 68 59.5 63
42R842 Mechelen (Hendrik Speecqvest) 19 33 55 52 21 48 57 35 57 48 66 67.5 62 52
44M705 Roeselare (Haven) 18 32 57 54 20 59 72 43 67 64 72.5 73.5 68.5 66
44N012 Moerkerke 15 34 57 55 22 54 68 51 69 67 73.5 73.5 67 66
44N029 Houtem (Veurne) 20 26 53 51 22 52 67 44 69 69 69.5 74 68 62.5
44R701 Gent (Baudelopark) 13 32 56 50 22 51 68 26 56 58 68.5 68.5 65 61.5
44R710 Destelbergen 15 37 55 56 26 53 71 27 72 61 72 74.5 67 54
43N060 Havinnes 17 31 54 51 19 49 66 32 53 41 60 70.5 62 58.5
43N064 Rixensart 17 43 58 50 28 53 64 46 71 49 69.5 75 71 61
43N066 Eupen 48 42 55 42 43 57 62 64 51 41 57.5 62.5 60.5 57.5
43N070 Mons 19 35 56 50 24 53 64 40 55 25 57 58 55.5 47.5
43N073 Vezin 24 36 55 41 23 30 53 43 57 54 66 65.5 64.5 57.5
43N085 Vielsalm 30 37 60 46 41 64 66 67 64 49 60.5 64.5 64.5 62
43N093 Sinsin 28 40 59 47 39 51 61 76 65 57 69 69 71 67
43N100 Dourbes 32 39 60 44 25 40 61 69 73 51 64 68.5 69.5 63
43N113 Saint-Ode 33 40 64 47 46 71 71 73 74 64 68 72 74 70
43N121 Offagne 20 28 52 37 37 63 56 62 59 32 41 37.5 54.5 51
43N132 Habay-La-Neuve 26 37 62 44 38 67 70 74 76 40 57 70.5 61 60.5
43R221 Herstal 3 38 53 39 21 20 49 1 44 44 63.5 62 58.5 55.5
43R222 Liège (ISSeP) 13 40 57 42 22 26 60 9 42 56 67.5 64.5 60 59.5
43R240 Engis 5 35 53 39 20 23 50 14 34 25 44.5 60 60 49.5
43R401 Namur 18 29 49 38 15 28 46 33 49 56 66.5 60.5 63.5 57.5
45R502 Lodelinsart 13 30 52 41 17 40 53 37 59 37 54.5 57.5 51.5 46
 
Interpolated spatial average in :
Brussels1633544920455929584461646148
Flanders2137595328516433645572736660
Wallonia2337594632476149634562646459
Belgium2237594930496242634967686559
 
% 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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