previous 14 days
O3 concentrations per day (µg/m3), 02/03/2026 - 15/03/2026
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

Codecity02/0303/0304/0305/0306/0307/0308/0309/0310/0311/0312/0313/0314/0315/03
41B011 Sint-Agatha-Berchem 80 82.5 84 84 70.5 20 38 85.5 67.5 69 78.5 82 78.5 82.5
41MEU1 Neder-Over-Heembeek 81.5 79 74 79 76 39 43.5 4 NA NA NA 73.5 70.5 78
41N043 Voorhaven (Haren) 66.5 71 67 68 66.5 36 39 1.5 NA NA NA 68.5 67 73.5
41R001 Sint-Jans-Molenbeek 70.5 59.5 64.5 70.5 57.5 15 26 1 NA NA NA 65.5 65 71
41R012 Ukkel 80.5 74 74 82.5 72.5 29.5 48.5 37 NA NA NA 79 75.5 78.5
42N016 Dessel 74 78.5 74 74.5 67.5 46.5 52.5 7 NA NA NA 86.5 73 80.5
42N027 Bree 85.5 90 80.5 75.5 69 63 69 8.5 NA NA NA 86.5 76.5 82.5
42N035 Aarschot 80.5 82 84.5 83 73 45 73 86.5 74 65.5 77 77.5 80 81
42N040 Sint-Pieters-Leeuw 78.5 81.5 83 84 61.5 20.5 52.5 81.5 71 69.5 73 80.5 80.5 77
42N046 Gellik 81.5 87.5 77 80 57.5 49.5 73 19 NA NA NA 88 70.5 NA
42N047 Hasselt 84 86.5 89.5 87 66.5 56.5 88.5 2 NA NA NA 83.5 79.5 78.5
42R801 Borgerhout 70 61 67 70 43.5 37.5 51 3.5 NA NA NA NA NA 78.5
42R811 Schoten 84 67 85 84.5 55.5 36 57 83.5 61.5 68 76.5 84 70.5 78.5
42R842 Mechelen (Hendrik Speecqvest) 80 68 67 79 47 31.5 38 70.5 62.5 58.5 76 70 77.5 79.5
44M705 Roeselare (Haven) 58 NA NA NA 59.5 44.5 40.5 79.5 65.5 75 82.5 82.5 82 87
44N012 Moerkerke 54 NA NA NA NA NA 32.5 73 67.5 74.5 83 83.5 71 88
44N029 Houtem (Veurne) 53.5 NA NA NA 54 58 36 73.5 65.5 78 83.5 85.5 80.5 85
44R701 Gent (Baudelopark) 58.5 NA NA NA 6 16 45 79.5 62 71 79.5 80 75.5 84
44R710 Destelbergen 63.5 NA NA NA 72.5 27.5 44.5 82 64.5 71 80 84.5 71.5 85.5
43N060 Havinnes 70.5 66.5 82 75 40 13 39 67.5 59 65 65.5 73.5 68 74.5
43N064 Rixensart 86 92 93 90 73.5 37 70 90 72 73.5 81 82 78.5 85
43N066 Eupen 70 NA NA NA 56 72 81.5 85 70.5 70 75 73.5 61 73
43N070 Mons 65.5 90 89 74 47 22 72.5 69.5 58.5 56.5 69.5 65.5 69.5 73.5
43N073 Vezin 83.5 88 90 86.5 78.5 55 76 85.5 78.5 70.5 75.5 82 73 78
43N085 Vielsalm 54 NA NA NA 58 86.5 93.5 79 67 64 71 74 66 62.5
43N093 Sinsin 83.5 87 89.5 86 72 74.5 95.5 84.5 78 78 77 83.5 76.5 76
43N100 Dourbes 88 99 99 98 90 86 102 96.5 87.5 81 80.5 93.5 83 85
43N113 Saint-Ode 75 88 92.5 84 67 85 99.5 88.5 89 77 78 87 79 78
43N121 Offagne 74 69.5 77.5 74.5 44 66.5 73.5 71.5 56.5 55.5 69 63.5 54 61.5
43N132 Habay-La-Neuve 75.5 83 81 76.5 57 85 88.5 82 64.5 68 72 80.5 75.5 72.5
43R221 Herstal 29.5 NA NA NA 51 61 86 83 70 72 76.5 78 67.5 78
43R222 Liège (ISSeP) 60 NA NA NA 69.5 63.5 88.5 84.5 78.5 77.5 80.5 77 70.5 80.5
43R240 Engis 63 NA NA NA 73.5 61.5 73 86.5 73.5 73 77 76.5 59.5 74
43R401 Namur 81 84.5 84 84.5 72.5 43 82.5 81.5 79.5 71.5 77.5 79.5 74 78
45R502 Lodelinsart 74 80.5 85.5 81.5 64.5 31 91 79 67.5 57.5 73 65.5 70 70
 
Interpolated spatial average in :
Brussels7671717766234083676376747276
Flanders8177818065415185697385837384
Wallonia7984868365597983697076797275
Belgium8081848165516684697180807379
 
% 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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