previous 14 days
O3 concentrations per day (µg/m3), 18/01/2026 - 31/01/2026
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

Codecity18/0119/0120/0121/0122/0123/0124/0125/0126/0127/0128/0129/0130/0131/01
41B011 Sint-Agatha-Berchem 26 13.5 42 50 42 49 64.5 38.5 28.5 49.5 33 31.5 47.5 64.5
41MEU1 Neder-Over-Heembeek 34 11 37 44 41 54 66 39.5 24.5 53 27.5 15.5 49 61
41N043 Voorhaven (Haren) 24.5 9 32.5 40.5 30.5 44 56 35 17.5 42.5 24 12.5 39.5 50.5
41R001 Sint-Jans-Molenbeek 17.5 5 31 38 31.5 38.5 54 27.5 17 37.5 14.5 22.5 36.5 52
41R012 Ukkel 49 17 43 50.5 43.5 54 65.5 44.5 25.5 57 31.5 43 50.5 67
42N016 Dessel 30.5 15.5 17.5 45.5 32 38.5 58.5 26 17.5 46.5 40 27.5 32.5 53.5
42N027 Bree 22 11 22 22 22.5 31.5 46.5 20 15.5 37 26 19 44 52.5
42N035 Aarschot 39 19 32 44 43.5 50 64 47 24 60 35 18.5 56 65
42N040 Sint-Pieters-Leeuw 53 17.5 50.5 54.5 50.5 55.5 70.5 45 29 61.5 33 58 58 72
42N046 Gellik 29.5 19 26 49 31 45.5 47.5 14 25.5 62 41.5 27 60 47
42N047 Hasselt 30 19.5 24.5 47.5 34 48 62.5 28 23.5 52.5 45.5 31 57 55
42R801 Borgerhout 38.5 6.5 22.5 35 32.5 27.5 NA 26.5 22.5 30.5 37 18 39.5 54
42R811 Schoten 43.5 10 26 45.5 36.5 46.5 64 31.5 23.5 40.5 37 22 53 60.5
42R842 Mechelen (Hendrik Speecqvest) 35 8 32.5 41 38.5 46.5 61.5 32 29.5 44.5 28 17 47.5 61
44M705 Roeselare (Haven) 45 19.5 46 53 47 55.5 59.5 49 29 44.5 25.5 47.5 62 73
44N012 Moerkerke 20.5 21.5 42 54 44.5 55.5 63.5 42.5 21 52.5 29.5 19 46.5 72.5
44N029 Houtem (Veurne) 34.5 28.5 41.5 47 48 54 59.5 47 28.5 67 41 57 56.5 59.5
44R701 Gent (Baudelopark) 47.5 22.5 40.5 51 44.5 56.5 68.5 34.5 23.5 50.5 33 23 42 68.5
44R710 Destelbergen 49 27.5 43.5 53.5 48.5 58 70.5 37.5 26.5 54.5 35.5 24.5 48 70
43N060 Havinnes 46.5 22 44.5 48.5 47.5 56 73.5 39.5 30.5 56.5 26 54 55 68
43N064 Rixensart 42 20.5 42 58 52 63 70.5 67 35 65.5 36 56 57 74
43N066 Eupen 44.5 24 55 71.5 68 58.5 60.5 39.5 16 67 44.5 38.5 63 46
43N070 Mons 47 18.5 40 52 47.5 52.5 75.5 42.5 23.5 60.5 33.5 38 NA NA
43N073 Vezin 58.5 22.5 37 54.5 52.5 55.5 67 81 39.5 62 33 33 59 73
43N085 Vielsalm 51.5 24 25.5 49 48 44 59.5 27 22.5 64.5 46.5 49.5 52.5 41
43N093 Sinsin 44.5 24 32.5 42.5 49 56.5 66.5 41 19.5 64 54 43 57.5 76.5
43N100 Dourbes 59.5 22 50.5 56.5 49 60 71 56.5 40 76 53 67.5 66 79
43N113 Saint-Ode 68 25 30 62 43.5 44 65.5 28.5 59.5 68.5 62.5 66 66 60
43N121 Offagne 46.5 17.5 15 35 26.5 44 52.5 21.5 29.5 56.5 48.5 52 48 45.5
43N132 Habay-La-Neuve 49 27 21.5 22.5 18.5 36.5 58.5 21 27 46 64.5 62 53 52
43R221 Herstal 19.5 17 25.5 48.5 41 44 59 25.5 20 54 38 20.5 43.5 43
43R222 Liège (ISSeP) 19.5 24.5 37.5 60 56.5 54.5 60 28 22 66 37 26 59.5 57.5
43R240 Engis 21 22.5 26 58 55 50.5 56.5 35.5 32 62.5 28 18 51.5 56
43R401 Namur 30 22 34.5 44.5 44 53 65.5 74 36.5 60.5 31 27.5 54.5 67
45R502 Lodelinsart 44.5 13.5 32 47.5 38 51 66 53 27.5 55.5 27.5 51.5 46.5 63.5
 
Interpolated spatial average in :
Brussels3013354539476238204922274661
Flanders3621354743476237245131285463
Wallonia4422314844516437256342445760
Belgium4022334743496337255837375561
 
% 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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