previous 14 days
O3 concentrations per day (µg/m3), 19/01/2026 - 01/02/2026
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

Codecity19/0120/0121/0122/0123/0124/0125/0126/0127/0128/0129/0130/0131/0101/02
41B011 Sint-Agatha-Berchem 13.5 42 50 42 49 64.5 38.5 28.5 49.5 33 31.5 47.5 64.5 59
41MEU1 Neder-Over-Heembeek 11 37 44 41 54 66 39.5 24.5 53 27.5 15.5 49 61 59.5
41N043 Voorhaven (Haren) 9 32.5 40.5 30.5 44 56 35 17.5 42.5 24 12.5 39.5 50.5 51
41R001 Sint-Jans-Molenbeek 5 31 38 31.5 38.5 54 27.5 17 37.5 14.5 22.5 36.5 52 48.5
41R012 Ukkel 17 43 50.5 43.5 54 65.5 44.5 25.5 57 31.5 43 50.5 67 60
42N016 Dessel 15.5 17.5 45.5 32 38.5 58.5 26 17.5 46.5 40 27.5 32.5 53.5 60.5
42N027 Bree 11 22 22 22.5 31.5 46.5 20 15.5 37 26 19 44 52.5 64.5
42N035 Aarschot 19 32 44 43.5 50 64 47 24 60 35 18.5 56 65 68
42N040 Sint-Pieters-Leeuw 17.5 50.5 54.5 50.5 55.5 70.5 45 29 61.5 33 58 58 72 63
42N046 Gellik 19 26 49 31 45.5 47.5 14 25.5 62 41.5 27 60 47 62.5
42N047 Hasselt 19.5 24.5 47.5 34 48 62.5 28 23.5 52.5 45.5 31 57 55 71.5
42R801 Borgerhout 6.5 22.5 35 32.5 27.5 NA 26.5 22.5 30.5 37 18 39.5 54 51.5
42R811 Schoten 10 26 45.5 36.5 46.5 64 31.5 23.5 40.5 37 22 53 60.5 60
42R842 Mechelen (Hendrik Speecqvest) 8 32.5 41 38.5 46.5 61.5 32 29.5 44.5 28 17 47.5 61 61
44M705 Roeselare (Haven) 19.5 46 53 47 55.5 59.5 49 29 44.5 25.5 47.5 62 73 58.5
44N012 Moerkerke 21.5 42 54 44.5 55.5 63.5 42.5 21 52.5 29.5 19 46.5 72.5 59
44N029 Houtem (Veurne) 28.5 41.5 47 48 54 59.5 47 28.5 67 41 57 56.5 59.5 52
44R701 Gent (Baudelopark) 22.5 40.5 51 44.5 56.5 68.5 34.5 23.5 50.5 33 23 42 68.5 54.5
44R710 Destelbergen 27.5 43.5 53.5 48.5 58 70.5 37.5 26.5 54.5 35.5 24.5 48 70 60.5
43N060 Havinnes 22 44.5 48.5 47.5 56 73.5 39.5 30.5 56.5 26 54 55 68 56
43N064 Rixensart 20.5 42 58 52 63 70.5 67 35 65.5 36 56 57 74 70
43N066 Eupen 24 55 71.5 68 58.5 60.5 39.5 16 67 44.5 38.5 63 46 52.5
43N070 Mons 18.5 40 52 47.5 52.5 75.5 42.5 23.5 60.5 33.5 38 NA NA NA
43N073 Vezin 22.5 37 54.5 52.5 55.5 67 81 39.5 62 33 33 59 73 73
43N085 Vielsalm 24 25.5 49 48 44 59.5 27 22.5 64.5 46.5 49.5 52.5 41 47.5
43N093 Sinsin 24 32.5 42.5 49 56.5 66.5 41 19.5 64 54 43 57.5 76.5 74
43N100 Dourbes 22 50.5 56.5 49 60 71 56.5 40 76 53 67.5 66 79 70.5
43N113 Saint-Ode 25 30 62 43.5 44 65.5 28.5 59.5 68.5 62.5 66 66 60 65
43N121 Offagne 17.5 15 35 26.5 44 52.5 21.5 29.5 56.5 48.5 52 48 45.5 51
43N132 Habay-La-Neuve 27 21.5 22.5 18.5 36.5 58.5 21 27 46 64.5 62 53 52 57
43R221 Herstal 17 25.5 48.5 41 44 59 25.5 20 54 38 20.5 43.5 43 56
43R222 Liège (ISSeP) 24.5 37.5 60 56.5 54.5 60 28 22 66 37 26 59.5 57.5 65.5
43R240 Engis 22.5 26 58 55 50.5 56.5 35.5 32 62.5 28 18 51.5 56 72.5
43R401 Namur 22 34.5 44.5 44 53 65.5 74 36.5 60.5 31 27.5 54.5 67 67.5
45R502 Lodelinsart 13.5 32 47.5 38 51 66 53 27.5 55.5 27.5 51.5 46.5 63.5 61
 
Interpolated spatial average in :
Brussels1335453947623820492227466157
Flanders2135474347623724513128546361
Wallonia2231484451643725634244576061
Belgium2233474349633725583737556161
 
% 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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