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O3 concentrations per day (µg/m3), 05/06/2025 - 18/06/2025
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- 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
[O3]"ozone day" : day with at least one exeedance in Belgium of the EU threshold for information of the public (180 μg/m3)

Codecity05/0606/0607/0608/0609/0610/0611/0612/0613/06[O3]
14/0615/0616/0617/0618/06
41B011 Sint-Agatha-Berchem 76 93 62 80 100 77 131 135 163 124 99 107 119 131
41MEU1 Neder-Over-Heembeek 71 86 56 76 90 69 122 134 155 115 96 107 18 NA
41N043 Voorhaven (Haren) 72 91 61 82 100 73 126 130 160 119 100 110 124 133
41R001 Sint-Jans-Molenbeek 74 90 59 77 98 72 124 125 157 118 95 101 116 128
41R012 Ukkel 76 94 61 81 91 74 133 131 156 120 102 113 130 141
42N016 Dessel 74 88 58 78 89 80 119 142 176 NA NA 100 129 143
42N027 Bree 85 97 63 86 96 90 128 146 174 136 110 122 138 160
42N035 Aarschot 82 95 63 81 96 82 121 132 174 119 100 122 150 143
42N040 Sint-Pieters-Leeuw 76 93 60 80 93 74 132 131 158 118 99 110 128 134
42N046 Gellik 78 96 61 82 96 91 126 133 166 126 102 133 126 152
42N047 Hasselt 82 98 64 81 98 90 130 138 184 129 102 129 137 163
42R801 Borgerhout 82 89 68 81 99 80 118 131 162 117 96 94 136 108
42R811 Schoten 81 91 71 79 101 78 119 148 179 115 94 100 138 114
42R842 Mechelen (Hendrik Speecqvest) 77 86 61 77 93 72 120 130 162 119 92 102 117 127
44M705 Roeselare (Haven) 87 88 70 84 94 72 125 135 138 98 97 90 116 109
44N012 Moerkerke 91 89 74 84 91 80 129 140 118 103 92 83 110 91
44N029 Houtem (Veurne) 87 81 70 77 91 70 129 133 127 103 86 84 92 96
44R701 Gent (Baudelopark) 82 88 69 80 94 75 125 134 151 115 93 95 134 107
44R710 Destelbergen 83 88 68 79 92 76 124 130 180 113 94 94 131 107
43N060 Havinnes 67 79 51 70 83 63 117 117 147 NA NA NA NA NA
43N064 Rixensart 80 102 65 87 97 85 132 133 161 121 104 119 140 145
43N066 Eupen 73 83 63 78 79 87 130 130 138 124 87 126 142 134
43N070 Mons 71 79 44 66 75 67 119 105 172 101 87 105 129 133
43N073 Vezin 79 89 59 79 89 73 123 138 167 108 94 119 139 144
43N085 Vielsalm 67 76 60 69 75 94 108 136 142 123 70 96 119 126
43N093 Sinsin 81 91 65 80 91 83 117 143 136 117 89 111 129 137
43N100 Dourbes 78 87 60 77 89 88 115 129 128 107 90 107 111 135
43N113 Saint-Ode 76 82 64 80 81 104 117 135 134 122 74 102 123 128
43N121 Offagne 69 82 63 73 83 105 111 127 139 115 71 101 119 121
43N132 Habay-La-Neuve 68 74 53 70 82 105 115 132 149 108 61 87 NA 107
43R221 Herstal 75 87 61 81 92 91 126 123 156 122 92 128 138 138
43R222 Liège (ISSeP) 80 88 64 81 90 91 125 130 156 130 90 122 139 134
43R240 Engis 74 83 54 78 89 86 123 132 153 123 81 114 127 128
43R401 Namur 80 88 59 81 92 90 118 131 154 114 95 114 140 143
45R502 Lodelinsart 69 78 41 68 82 72 120 132 164 111 90 108 137 131
 
Interpolated spatial average in :
Brussels75936079967612713015411898109126132
Flanders83926782968312513715311297103127122
Wallonia74845875869011913114511181106126129
Belgium78876278918612213414911288105126126
 
% 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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