previous 14 days
O3 concentrations per day (µg/m3), 26/12/2025 - 08/01/2026
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

Codecity26/1227/1228/1229/1230/1231/1201/0102/0103/0104/0105/0106/0107/0108/01
41B011 Sint-Agatha-Berchem 18 52 68 34 59 59 64 71 67.5 60 48.5 45.5 59.5 59
41MEU1 Neder-Over-Heembeek 23 54 62 38 66 46 59.5 67.5 64 55 36 43 53 57.5
41N043 Voorhaven (Haren) 20 52 62 36 59 44 55.5 62.5 57 49.5 22.5 31.5 44.5 49.5
41R001 Sint-Jans-Molenbeek 12 35 48 24 48 34 53 54.5 50 39.5 26 38 48 54
41R012 Ukkel 22 52 61 49 65 50 59.5 68.5 66 49 43.5 46 59.5 61
42N016 Dessel 30 57 62 43 63 52 62 68.5 59 50 46 44.5 58 46.5
42N027 Bree 26 56 58 42 60 51 71.5 72 68 60.5 54 64.5 67 54.5
42N035 Aarschot 29 59 62 35 60 56 64 71 65.5 53 52 52.5 61 55
42N040 Sint-Pieters-Leeuw 20 51 65 27 61 51 62.5 68.5 65.5 51 44.5 52.5 60 62
42N046 Gellik 30 36 55 32 59 49 66.5 66 65 58.5 52.5 54.5 63 53.5
42N047 Hasselt 28 59 61 28 58 46 68.5 69 65 55 50.5 52.5 62 48.5
42R801 Borgerhout 22 50 61 33 57 53 67.5 69 60 57 35 38.5 53.5 45.5
42R811 Schoten 29 56 64 27 60 56 70 68 59.5 63 40 39.5 54.5 49.5
42R842 Mechelen (Hendrik Speecqvest) 21 48 57 35 57 48 66 67.5 62 52 42 45 55.5 52.5
44M705 Roeselare (Haven) 20 59 72 43 67 64 72.5 73.5 68.5 66 56.5 51 54.5 69
44N012 Moerkerke 22 54 68 51 69 67 73.5 73.5 67 66 66.5 62 56 55.5
44N029 Houtem (Veurne) 22 52 67 44 69 69 69.5 74 68 62.5 68.5 65.5 59 71.5
44R701 Gent (Baudelopark) 22 51 68 26 56 58 68.5 68.5 65 61.5 47 40.5 53 65
44R710 Destelbergen 26 53 71 27 72 61 72 74.5 67 54 NA 44.5 57 66
43N060 Havinnes 19 49 66 32 53 41 60 70.5 62 58.5 30.5 31.5 52 54.5
43N064 Rixensart 28 53 64 46 71 49 69.5 75 71 61 56 52 64 62.5
43N066 Eupen 43 57 62 64 51 41 57.5 62.5 60.5 57.5 59.5 53 61 51
43N070 Mons 24 53 64 40 55 25 57 58 55.5 47.5 10.5 NA 54 60
43N073 Vezin 23 30 53 43 57 54 66 65.5 64.5 57.5 49 54.5 63 62.5
43N085 Vielsalm 41 64 66 67 64 49 60.5 64.5 64.5 62 56.5 58 60 47
43N093 Sinsin 39 51 61 76 65 57 69 69 71 67 52 59 68 68
43N100 Dourbes 25 40 61 69 73 51 64 68.5 69.5 63 53.5 57 63.5 72.5
43N113 Saint-Ode 46 71 71 73 74 64 68 72 74 70 57 64.5 67 67.5
43N121 Offagne 37 63 56 62 59 32 41 37.5 54.5 51 40.5 45 56 53
43N132 Habay-La-Neuve 38 67 70 74 76 40 57 70.5 61 60.5 52 59 61.5 61.5
43R221 Herstal 21 20 49 1 44 44 63.5 62 58.5 55.5 44.5 53.5 59 48
43R222 Liège (ISSeP) 22 26 60 9 42 56 67.5 64.5 60 59.5 54.5 58.5 65 60
43R240 Engis 20 23 50 14 34 25 44.5 60 60 49.5 51 50 60 51
43R401 Namur 15 28 46 33 49 56 66.5 60.5 63.5 57.5 44 51.5 57 58.5
45R502 Lodelinsart 17 40 53 37 59 37 54.5 57.5 51.5 46 35.5 42 51.5 54
 
Interpolated spatial average in :
Brussels2045592958446164614836425558
Flanders2851643364557273666049496158
Wallonia3247614963456264645947526461
Belgium3049624263496768655948516260
 
% 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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