previous 14 days
O3 concentrations per day (µg/m3), 04/09/2026 - 17/09/2026
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

Codecity04/0905/0906/0907/0908/0909/0910/0911/0912/0913/0914/0915/0916/0917/09
41B011 Sint-Agatha-Berchem 63.5 77.5 97 107 80 64 81 71.5 75.5 50 37.5 99.5 64.5 66.5
41MEU1 Neder-Over-Heembeek 48.5 76.5 97.5 101.5 76 63 79 66 72 49.5 38 95.5 65.5 62.5
41N043 Voorhaven (Haren) 56 73 86.5 97.5 71.5 60.5 74 63 68 47 35.5 92 60.5 59.5
41R001 Sint-Jans-Molenbeek 56.5 70 89 87 75.5 57.5 74 64.5 70 46.5 37 92.5 59.5 61
41R012 Ukkel 59 78.5 86 102.5 81.5 64.5 74.5 67.5 69 50 40.5 100.5 65 65
42N016 Dessel 72.5 74 97 122 81 61.5 83.5 61 73.5 46 40.5 99.5 65.5 63
42N027 Bree 74 82 99.5 128.5 89.5 66 88.5 70.5 78.5 52.5 60.5 105.5 76.5 72.5
42N035 Aarschot 68.5 80 101 126 92 66.5 87.5 78 81.5 57 45 112 73.5 72
42N040 Sint-Pieters-Leeuw 61.5 79.5 98 107.5 83 66.5 80.5 72.5 73 49 45 104.5 65.5 67.5
42N046 Gellik 65 81.5 96 123.5 86 67.5 88.5 71 77 59.5 59.5 100 77 72
42N047 Hasselt 64 78.5 97.5 120 86.5 63.5 83.5 69 74 54 56 101.5 73.5 72.5
42R801 Borgerhout 70.5 74.5 88.5 110 79.5 64.5 81.5 60.5 75.5 46.5 31.5 96 69 62.5
42R811 Schoten 66.5 73.5 95.5 114 80.5 62 85 61.5 83 53.5 34.5 101 64.5 65.5
42R842 Mechelen (Hendrik Speecqvest) 58.5 71.5 89 100.5 78.5 57.5 75.5 59 69.5 53 26.5 83 61 63
44M705 Roeselare (Haven) 75 83.5 98 79 76.5 79.5 90 75.5 85 57.5 55.5 91 73.5 70
44N012 Moerkerke 83 76.5 102 78 71 75 92 69.5 79 53 43.5 81.5 69.5 63
44N029 Houtem (Veurne) 73 81 95 73 73.5 77.5 84.5 74.5 74.5 57 43.5 72 68 58.5
44R701 Gent (Baudelopark) 72.5 75.5 101.5 88 76 73.5 88 66 78 50.5 51.5 89 67.5 65
44R710 Destelbergen 76.5 79 99.5 97.5 78 73 91 69 83 52.5 52.5 95 70.5 68
43N060 Havinnes 55.5 78 87.5 82 72 64.5 74.5 66 79 52.5 47 104 67.5 68.5
43N064 Rixensart 56.5 87 100 108.5 90 71 82.5 76.5 78 56.5 51 107 73 71
43N066 Eupen 50.5 74 87 108.5 70.5 58.5 79 73 71.5 58.5 50.5 84.5 64.5 72.5
43N070 Mons 25.5 64.5 77 80.5 70.5 59.5 61 52.5 56 39 36 81 57 56
43N073 Vezin 52.5 77.5 91 109 78 66 78.5 76.5 70 46.5 47.5 97 71.5 73
43N085 Vielsalm 39.5 68 80.5 94 63.5 60.5 74 69.5 61 55.5 24.5 71.5 65 65.5
43N093 Sinsin 57 80.5 97 113 74 68 79 83.5 73 54.5 48.5 96 74.5 80.5
43N100 Dourbes 56 85 114 120 84 79.5 88 92.5 81 67.5 59 119.5 83 84.5
43N113 Saint-Ode 58.5 78.5 101 114.5 75 70.5 81 82 73.5 66 50.5 93 84 84.5
43N121 Offagne 55.5 76.5 105.5 124 78.5 72.5 80 80.5 73 60.5 54 99.5 80 83
43N132 Habay-La-Neuve 63.5 74.5 106.5 120.5 70 71 79 80.5 71 52 51.5 90.5 84.5 76
43R221 Herstal 54 79 90.5 113 76.5 65 79.5 72.5 73.5 54 48.5 90 73 73
43R222 Liège (ISSeP) 60 82 90.5 113 76.5 67 79.5 75 76 58 49.5 93 70 76
43R240 Engis 43 74.5 83.5 108 66 62.5 73.5 68 65 30.5 38.5 84 59.5 63.5
43R401 Namur 56 82 93.5 111.5 82.5 67.5 76.5 77.5 72.5 59.5 50 96.5 72 73.5
45R502 Lodelinsart 34.5 74 106 99 81.5 63 71.5 71 66 42.5 43 92 48.5 67
 
Interpolated spatial average in :
Brussels57769210479637769725040976565
Flanders67789610179688669775347947067
Wallonia48759310475677875705246927173
Belgium57769410377688172735246937170
 
% 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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