previous 14 days
O3 concentrations per day (µg/m3), 20/02/2026 - 05/03/2026
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

Codecity20/0221/0222/0223/0224/0225/0226/0227/0228/0201/0302/0303/0304/0305/03
41B011 Sint-Agatha-Berchem 72 77 72 80 60 62.5 74 70.5 79 79.5 80 82.5 84 84
41MEU1 Neder-Over-Heembeek 71.5 67 67.5 76.5 48 63 70 68 74.5 77.5 81.5 79 74 79
41N043 Voorhaven (Haren) 66 66 65 72 49 48 64.5 62 69.5 73.5 66.5 71 67 68
41R001 Sint-Jans-Molenbeek 60.5 60.5 58 65 48 50.5 60 61.5 70.5 73.5 70.5 59.5 64.5 70.5
41R012 Ukkel 70 74.5 70.5 77 56 63.5 76.5 74 79 82 80.5 74 74 82.5
42N016 Dessel 61.5 65 62.5 75 54 58.5 68 75 72.5 75.5 74 78.5 74 74.5
42N027 Bree 70 76 74 85 71 66 80.5 88.5 84.5 85 85.5 90 80.5 75.5
42N035 Aarschot 71 76 67.5 77 64 62 78.5 78.5 79 81 80.5 82 84.5 83
42N040 Sint-Pieters-Leeuw 72.5 78.5 72 77 63 65.5 72.5 70.5 76 79 78.5 81.5 83 84
42N046 Gellik 67 77.5 70 81 66 64.5 78 88 81 80.5 81.5 87.5 77 80
42N047 Hasselt 69.5 76.5 72 80 64.5 63 78.5 83.5 81.5 81 84 86.5 89.5 87
42R801 Borgerhout 66.5 72.5 64 72.5 58 45.5 56.5 62.5 72 77 70 61 67 70
42R811 Schoten 73 81 69 80.5 61 57.5 74.5 68 77 82 84 67 85 84.5
42R842 Mechelen (Hendrik Speecqvest) 72 76 70 73 53.5 57.5 74.5 68 78.5 79.5 80 68 67 79
44M705 Roeselare (Haven) 78.5 80 73.5 75.5 61 56.5 78 60 77 74 58 NA NA NA
44N012 Moerkerke 76.5 78.5 70.5 78.5 54.5 58.5 75.5 61 73 69 54 NA NA NA
44N029 Houtem (Veurne) 77 75.5 72.5 74 60 54.5 74.5 61.5 74.5 69 53.5 NA NA NA
44R701 Gent (Baudelopark) 72 75.5 68.5 75 55.5 59.5 76.5 65.5 76 73.5 58.5 NA NA NA
44R710 Destelbergen 74.5 77 70.5 78.5 55.5 65.5 82 66 78 76 63.5 NA NA NA
43N060 Havinnes 80 80 71 79.5 61 53 79 58.5 76 77.5 70.5 66.5 82 75
43N064 Rixensart 74.5 79.5 72.5 83.5 59.5 66 82.5 81 82.5 85 86 92 93 90
43N066 Eupen 59 65 58 72.5 59 52.5 71.5 79 79.5 77 70 NA NA NA
43N070 Mons 64.5 68.5 60 64 51 50.5 64.5 62 73 75 65.5 90 89 74
43N073 Vezin 70.5 76.5 65 78 60 62 75 87.5 81.5 79 83.5 88 90 86.5
43N085 Vielsalm 57.5 74 54.5 70 46.5 44 58.5 72 73 73.5 54 NA NA NA
43N093 Sinsin 67.5 78 NA 79.5 59 61.5 72 86.5 84 82.5 83.5 87 89.5 86
43N100 Dourbes 75 85.5 72 85.5 66.5 68 78 93.5 87 89 88 99 99 98
43N113 Saint-Ode 71.5 84 69.5 82.5 65 54.5 71.5 83 82 84 75 88 92.5 84
43N121 Offagne 48 61.5 38.5 76 40.5 42 56 74 69.5 73 74 69.5 77.5 74.5
43N132 Habay-La-Neuve 64.5 69 59.5 74 58.5 42 64.5 76 74 78 75.5 83 81 76.5
43R221 Herstal 63.5 72.5 65 75 49.5 58.5 72.5 83 79.5 80 29.5 NA NA NA
43R222 Liège (ISSeP) 70.5 71 63 76.5 56.5 68 77 87.5 83 84 60 NA NA NA
43R240 Engis 47 56 57 69.5 49 54.5 70.5 79 77.5 77 63 NA NA NA
43R401 Namur 73.5 77 64.5 78 59 58.5 72.5 86.5 82.5 81 81 84.5 84 84.5
45R502 Lodelinsart 55 67.5 56 64.5 50.5 59 65.5 77 74.5 77 74 80.5 85.5 81.5
 
Interpolated spatial average in :
Brussels6770667555587068757876717177
Flanders7375708061627771807881778180
Wallonia6572627855567180797979848683
Belgium6873657958587476797980818481
 
% 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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