previous 14 days
O3 concentrations per day (µg/m3), 01/03/2026 - 14/03/2026
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

Codecity01/0302/0303/0304/0305/0306/0307/0308/0309/0310/0311/0312/0313/0314/03
41B011 Sint-Agatha-Berchem 79.5 80 82.5 84 84 70.5 20 38 85.5 67.5 69 78.5 82 78.5
41MEU1 Neder-Over-Heembeek 77.5 81.5 79 74 79 76 39 43.5 4 NA NA NA 73.5 70.5
41N043 Voorhaven (Haren) 73.5 66.5 71 67 68 66.5 36 39 1.5 NA NA NA 68.5 67
41R001 Sint-Jans-Molenbeek 73.5 70.5 59.5 64.5 70.5 57.5 15 26 1 NA NA NA 65.5 65
41R012 Ukkel 82 80.5 74 74 82.5 72.5 29.5 48.5 37 NA NA NA 79 75.5
42N016 Dessel 75.5 74 78.5 74 74.5 67.5 46.5 52.5 7 NA NA NA 86.5 73
42N027 Bree 85 85.5 90 80.5 75.5 69 63 69 8.5 NA NA NA 86.5 76.5
42N035 Aarschot 81 80.5 82 84.5 83 73 45 73 86.5 74 65.5 77 77.5 80
42N040 Sint-Pieters-Leeuw 79 78.5 81.5 83 84 61.5 20.5 52.5 81.5 71 69.5 73 80.5 80.5
42N046 Gellik 80.5 81.5 87.5 77 80 57.5 49.5 73 19 NA NA NA 88 70.5
42N047 Hasselt 81 84 86.5 89.5 87 66.5 56.5 88.5 2 NA NA NA 83.5 79.5
42R801 Borgerhout 77 70 61 67 70 43.5 37.5 51 3.5 NA NA NA NA NA
42R811 Schoten 82 84 67 85 84.5 55.5 36 57 83.5 61.5 68 76.5 84 70.5
42R842 Mechelen (Hendrik Speecqvest) 79.5 80 68 67 79 47 31.5 38 70.5 62.5 58.5 76 70 77.5
44M705 Roeselare (Haven) 74 58 NA NA NA 59.5 44.5 40.5 79.5 65.5 75 82.5 82.5 82
44N012 Moerkerke 69 54 NA NA NA NA NA 32.5 73 67.5 74.5 83 83.5 71
44N029 Houtem (Veurne) 69 53.5 NA NA NA 54 58 36 73.5 65.5 78 83.5 85.5 80.5
44R701 Gent (Baudelopark) 73.5 58.5 NA NA NA 6 16 45 79.5 62 71 79.5 80 75.5
44R710 Destelbergen 76 63.5 NA NA NA 72.5 27.5 44.5 82 64.5 71 80 84.5 71.5
43N060 Havinnes 77.5 70.5 66.5 82 75 40 13 39 67.5 59 65 65.5 73.5 68
43N064 Rixensart 85 86 92 93 90 73.5 37 70 90 72 73.5 81 82 78.5
43N066 Eupen 77 70 NA NA NA 56 72 81.5 85 70.5 70 75 73.5 61
43N070 Mons 75 65.5 90 89 74 47 22 72.5 69.5 58.5 56.5 69.5 65.5 69.5
43N073 Vezin 79 83.5 88 90 86.5 78.5 55 76 85.5 78.5 70.5 75.5 82 73
43N085 Vielsalm 73.5 54 NA NA NA 58 86.5 93.5 79 67 64 71 74 66
43N093 Sinsin 82.5 83.5 87 89.5 86 72 74.5 95.5 84.5 78 78 77 83.5 76.5
43N100 Dourbes 89 88 99 99 98 90 86 102 96.5 87.5 81 80.5 93.5 83
43N113 Saint-Ode 84 75 88 92.5 84 67 85 99.5 88.5 89 77 78 87 79
43N121 Offagne 73 74 69.5 77.5 74.5 44 66.5 73.5 71.5 56.5 55.5 69 63.5 54
43N132 Habay-La-Neuve 78 75.5 83 81 76.5 57 85 88.5 82 64.5 68 72 80.5 75.5
43R221 Herstal 80 29.5 NA NA NA 51 61 86 83 70 72 76.5 78 67.5
43R222 Liège (ISSeP) 84 60 NA NA NA 69.5 63.5 88.5 84.5 78.5 77.5 80.5 77 70.5
43R240 Engis 77 63 NA NA NA 73.5 61.5 73 86.5 73.5 73 77 76.5 59.5
43R401 Namur 81 81 84.5 84 84.5 72.5 43 82.5 81.5 79.5 71.5 77.5 79.5 74
45R502 Lodelinsart 77 74 80.5 85.5 81.5 64.5 31 91 79 67.5 57.5 73 65.5 70
 
Interpolated spatial average in :
Brussels7876717177662340836763767472
Flanders7881778180654151856973858373
Wallonia7979848683655979836970767972
Belgium7980818481655166846971808073
 
% 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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