previous 14 days
O3 concentrations per day (µg/m3), 28/06/2025 - 11/07/2025
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
[O3]"ozone day" : day with at least one exeedance in Belgium of the EU threshold for information of the public (180 μg/m3)

Codecity28/0629/0630/0601/0702/07[O3]
03/0704/0705/0706/0707/0708/0709/0710/0711/07
41B011 Sint-Agatha-Berchem 54 94 118 119 170 82 117 82 50 71 73 111 104 105
41MEU1 Neder-Over-Heembeek NA NA 99 NA NA NA 119 82 52 76 79 121 106 111
41N043 Voorhaven (Haren) 55 98 115 117 172 85 118 85 54 76 77 115 105 112
41R001 Sint-Jans-Molenbeek 54 95 115 118 171 79 118 83 54 68 72 110 99 103
41R012 Ukkel 58 104 119 127 186 90 122 88 53 79 81 122 115 115
42N016 Dessel 57 99 133 137 161 94 109 85 53 72 74 100 111 83
42N027 Bree 76 109 148 139 165 100 121 100 73 83 89 114 111 83
42N035 Aarschot 62 119 130 130 190 98 116 93 58 82 81 120 119 93
42N040 Sint-Pieters-Leeuw NA 95 125 125 163 86 119 87 56 74 79 117 117 116
42N046 Gellik 71 114 133 128 170 102 110 93 78 77 86 104 103 NA
42N047 Hasselt 68 119 140 128 178 104 118 95 71 77 83 108 125 80
42R801 Borgerhout 56 77 134 142 150 87 122 87 54 82 78 107 107 109
42R811 Schoten 59 88 135 158 163 88 122 87 54 80 77 111 105 106
42R842 Mechelen (Hendrik Speecqvest) 49 90 114 129 179 83 113 79 52 75 74 112 105 99
44M705 Roeselare (Haven) 53 82 133 147 98 80 107 73 69 78 84 118 105 88
44N012 Moerkerke 57 75 128 167 106 81 101 70 70 79 78 111 114 80
44N029 Houtem (Veurne) 50 73 161 133 97 80 92 65 72 79 87 107 104 76
44R701 Gent (Baudelopark) 55 86 134 137 133 81 113 76 54 74 74 111 118 88
44R710 Destelbergen 54 84 133 132 131 82 113 78 52 72 73 112 115 89
43N060 Havinnes 50 87 136 146 136 93 123 78 60 79 83 128 115 114
43N064 Rixensart 58 110 125 135 174 98 116 92 58 82 83 124 119 106
43N066 Eupen 58 107 114 114 128 104 108 94 64 67 82 111 110 75
43N070 Mons 40 89 134 104 151 97 110 74 54 74 80 114 115 123
43N073 Vezin 61 120 131 124 152 110 110 89 65 84 80 116 133 81
43N085 Vielsalm NA NA 89 112 129 100 101 79 62 58 65 105 102 62
43N093 Sinsin 57 120 108 122 121 104 110 91 78 88 88 118 119 83
43N100 Dourbes 47 100 96 113 123 100 107 85 69 77 83 110 134 79
43N113 Saint-Ode 52 96 94 119 126 105 105 96 73 63 79 103 111 75
43N121 Offagne 51 89 95 118 113 107 104 82 73 69 83 99 104 77
43N132 Habay-La-Neuve 59 82 95 132 121 96 105 98 72 70 80 98 107 69
43R221 Herstal 60 120 114 119 142 106 110 89 62 71 83 114 115 74
43R222 Liège (ISSeP) 61 58 121 119 157 109 114 90 69 72 86 116 115 76
43R240 Engis 55 126 120 114 165 104 102 83 66 68 78 111 111 73
43R401 Namur 61 101 115 120 156 107 101 88 66 80 82 112 137 78
45R502 Lodelinsart 35 88 113 110 156 89 105 76 51 71 76 107 113 87
 
Interpolated spatial average in :
Brussels55971191201718711685547575115108107
Flanders6090135138141921138360808311411093
Wallonia53921101201331001088364738111011284
Belgium5691121128137961108362768211211188
 
% 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%<1%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%<1%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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