previous 14 days
O3 concentrations per day (µg/m3), 19/07/2026 - 01/08/2026
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

Codecity19/0720/0721/0722/0723/0724/0725/0726/0727/0728/0729/0730/0731/0701/08
41B011 Sint-Agatha-Berchem 77.5 90 93.5 78.5 72.5 102 135 75.5 75.5 116 132.5 95 94 105
41MEU1 Neder-Over-Heembeek 76.5 90.5 94.5 78 72.5 103 134 73 77 110.5 125.5 90.5 95.5 101
41N043 Voorhaven (Haren) 72 82 79.5 67.5 63 94 124.5 67 70 100 114.5 84.5 87 94
41R001 Sint-Jans-Molenbeek 73 85 86.5 73.5 66 100.5 127 70.5 69.5 104 119 91.5 86.5 97.5
41R012 Ukkel 77 92 97.5 78 71 106 134 75 76.5 106 125 94 92.5 104
42N016 Dessel 82 93.5 99.5 67.5 87 100.5 151.5 89.5 74.5 121.5 136 118.5 101.5 106.5
42N027 Bree 86 97 102 81 97 98 159 90 83 138 139 134 123 110
42N035 Aarschot 87 98.5 101.5 80 86.5 53.5 NA NA 80 124 149 112 108.5 111
42N040 Sint-Pieters-Leeuw 75 87.5 92.5 80.5 72 108 134 71 78 112.5 131 96 91 109.5
42N046 Gellik 83.5 94 100 83.5 99.5 105.5 149.5 90.5 81.5 132.5 147.5 125 109.5 108.5
42N047 Hasselt 83 94 97.5 80.5 91 95.5 149.5 93 78 128 137 121.5 103.5 103
42R801 Borgerhout 79 87 85.5 73 70.5 130 130.5 79 73 131 134.5 113.5 95.5 105
42R811 Schoten 79 87.5 89 78.5 74 135 135 81 73.5 137.5 141 111.5 99.5 104.5
42R842 Mechelen (Hendrik Speecqvest) 78.5 86 92.5 71.5 67 106.5 133 79 71 114.5 118.5 91 90 98
44M705 Roeselare (Haven) 84 82 91 84 72.5 131 140.5 75.5 99.5 128.5 139.5 107.5 93 120.5
44N012 Moerkerke 82 82 86.5 84.5 71 27.5 125.5 76 88.5 121 150.5 115.5 91 116.5
44N029 Houtem (Veurne) 78 80.5 80.5 83.5 76.5 151.5 126 68 91.5 105 160 102.5 94.5 112.5
44R701 Gent (Baudelopark) 78 80.5 84 79.5 69.5 115.5 126 66 87 118.5 142 105.5 91.5 128
44R710 Destelbergen 56 85.5 89.5 82.5 74 121 134.5 73 87 126.5 145.5 110 97 128
43N060 Havinnes 80 82.5 83 78 67.5 119.5 129 58.5 85 106.5 133 95 87 106
43N064 Rixensart 83 100 111.5 84.5 80 120 142 80.5 83 121 137.5 106.5 101.5 108.5
43N066 Eupen 79 89 94.5 82 94 82.5 123 91 76.5 116.5 130 125 127.5 102
43N070 Mons 76 83.5 92.5 79 69 105 122 53.5 74.5 96.5 107 69.5 84 102
43N073 Vezin 87.5 93 98.5 81.5 86.5 88 140.5 79 87 109 124 104.5 99.5 98.5
43N085 Vielsalm 80.5 85.5 93.5 84 92 84.5 115.5 95.5 81 99.5 117.5 126 126.5 106.5
43N093 Sinsin 93 93 88.5 90 91.5 88.5 128 94.5 88.5 108 130 113 118.5 112.5
43N100 Dourbes 91.5 104 113.5 93.5 92 110.5 138.5 90 88.5 103 132 124 101 108.5
43N113 Saint-Ode 86.5 87 95 90.5 97 97 121 101 86.5 114 124 127 135.5 111.5
43N121 Offagne 88 90.5 88 90 93 92 116.5 100.5 76.5 99.5 125 120 126 108.5
43N132 Habay-La-Neuve 83 83.5 91.5 84.5 92 87 117.5 61 72 118.5 127 122 133.5 104
43R221 Herstal 87.5 92.5 95 85.5 93.5 104.5 139 87.5 83 120.5 126 116 119 101.5
43R222 Liège (ISSeP) 85 90.5 92.5 74 89.5 98.5 135.5 85.5 79.5 121.5 125 119 119.5 106
43R240 Engis 81 90.5 88.5 81 90 84.5 130 71 78.5 105.5 121.5 108.5 93 103.5
43R401 Namur 83.5 90 98.5 83.5 81.5 89 141.5 83.5 89.5 103.5 123.5 110.5 95.5 97.5
45R502 Lodelinsart NA 95 110.5 81.5 77.5 98.5 129 72 78.5 96 123.5 56.5 NA 100
 
Interpolated spatial average in :
Brussels779092777010213074751091239393101
Flanders8188918078115132778311913610997109
Wallonia8389928485961238081105122110108103
Belgium82889282821041277982112128109103106
 
% 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

© IRCEL - CELINE