previous 14 days
O3 concentrations per day (µg/m3), 18/02/2026 - 03/03/2026
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

Codecity18/0219/0220/0221/0222/0223/0224/0225/0226/0227/0228/0201/0302/0303/03
41B011 Sint-Agatha-Berchem NA NA 72 77 72 80 60 63 74 71 79 80 80 83
41MEU1 Neder-Over-Heembeek 70 57 72 67 68 77 48 63 70 68 75 78 82 79
41N043 Voorhaven (Haren) 63 NA 66 66 65 72 49 48 65 62 70 74 67 71
41R001 Sint-Jans-Molenbeek 58 48 61 61 58 65 48 51 60 62 71 74 71 60
41R012 Ukkel 69 54 70 75 71 77 56 64 77 74 79 82 81 74
42N016 Dessel 68 59 62 65 63 75 54 59 68 75 73 76 74 79
42N027 Bree 68 63 70 76 74 85 71 66 81 89 85 85 86 90
42N035 Aarschot 62 54 71 76 68 77 64 62 79 79 79 81 81 82
42N040 Sint-Pieters-Leeuw 72 58 73 79 72 77 63 66 73 71 76 79 79 82
42N046 Gellik 62 54 67 78 70 81 66 65 78 88 81 81 82 88
42N047 Hasselt 65 54 70 77 72 80 65 63 79 84 82 81 84 87
42R801 Borgerhout 60 52 67 73 64 73 58 46 57 63 72 77 70 61
42R811 Schoten 71 58 73 81 69 81 61 58 75 68 77 82 84 67
42R842 Mechelen (Hendrik Speecqvest) 64 55 72 76 70 73 54 58 75 68 79 80 80 68
44M705 Roeselare (Haven) 66 52 79 80 74 76 61 57 78 60 77 74 58 NA
44N012 Moerkerke 64 48 77 79 71 79 55 59 76 61 73 69 54 NA
44N029 Houtem (Veurne) 68 53 77 76 73 74 60 55 75 62 75 69 54 NA
44R701 Gent (Baudelopark) 41 52 72 76 69 75 56 60 77 66 76 74 59 NA
44R710 Destelbergen 69 59 75 77 71 79 56 66 82 66 78 76 64 NA
43N060 Havinnes 71 51 80 80 71 80 61 53 79 59 76 78 71 67
43N064 Rixensart 78 57 75 80 73 84 60 66 83 81 83 85 86 92
43N066 Eupen 67 53 59 65 58 73 59 53 72 79 80 77 70 NA
43N070 Mons 72 51 65 69 60 64 51 51 65 62 73 75 66 90
43N073 Vezin 76 59 71 77 65 78 60 62 75 88 82 79 84 88
43N085 Vielsalm 65 54 58 74 55 70 47 44 59 72 73 74 54 NA
43N093 Sinsin 76 60 68 78 NA 80 59 62 72 87 84 83 84 87
43N100 Dourbes 80 97 75 86 72 86 67 68 78 94 87 89 88 99
43N113 Saint-Ode 79 62 72 84 70 83 65 55 72 83 82 84 75 88
43N121 Offagne 68 45 48 62 39 76 41 42 56 74 70 73 74 70
43N132 Habay-La-Neuve 76 56 65 69 60 74 59 42 65 76 74 78 76 83
43R221 Herstal 72 58 64 73 65 75 50 59 73 83 80 80 30 NA
43R222 Liège (ISSeP) 77 62 71 71 63 77 57 68 77 88 83 84 60 NA
43R240 Engis 73 53 47 56 57 70 49 55 71 79 78 77 63 NA
43R401 Namur 70 56 74 77 65 78 59 59 73 87 83 81 81 85
45R502 Lodelinsart 68 48 55 68 56 65 51 59 66 77 75 77 74 81
 
Interpolated spatial average in :
Brussels6553677066755558706875787671
Flanders6956737570806162777180788177
Wallonia7457657262785556718079797984
Belgium7256687365795858747679798081
 
% 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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