The number of days with daily highest 8-hour mean ozone concentrations higher than 120 µg/m3 are published in the table below.

According to EC directive 2008/50/EC the target value for the protection of human health, is the daily highest 8-hour mean ozone concentration of 120 µg/m3 that cannot be exceeded more then 25 times, averaged over three calender years. The averages over three years are published in the yellow table cells. The orange table cells indicate an exceedance. The row below the averages over three years give the number of days with highest 8-hour mean concentration above 120 µg/m3 per calender year. The long-term objective for the protection of human health, is no more exceedances of the daily highest 8-hour mean of 120 µg/m3.

This table will be updated every day at around 07:00 AM.

Code City Region 2015201620172018201920202021202220232024*2025*
41B004Brussel (Sint-Katelijne)Bru  578128857 
 9331661537   
41B006Brussel (EU Parlement)Bru  11        
 11NA         
41B011Sint-Agatha-BerchemBru  1117212415151414 
 1291132211962116513
41MEU1Neder-Over-HeembeekBru   27272313151313 
    27NA1961915612
41N043Voorhaven (Haren)Bru  4710148989 
 813189141111167
41R001Sint-Jans-MolenbeekBru  37111410878 
 4041713133NA1156
41R012UkkelBru  914172015181716 
 1459271419122415913
41WOL1Sint-Lambrechts-WoluweBru  234669   
 502639     
42N016DesselFla  1727283118191821 
 19181547212682323169
42N027BreeFla  2027282917181718 
 221821412224624201114
42N035AarschotFla  1825273018181720 
 201419422127622221514
42N040Sint-Pieters-LeeuwFla  1422232414151415 
 1212173615206201778
42N045HasseltFla  1919       
 1919         
42N046GellikFla  1723252716161518 
 201515392122423191313
42N047HasseltFla     2515171620 
     NA25422221517
42N054WalshoutemFla  1320232614141111 
 14917351824019140 
42R801BorgerhoutFla  2571036911 
 403136NA0111759
42R811SchotenFla  1522232414131415 
 15151535191851720711
42R831BerendrechtFla  1115182015151411 
 13812251620816180 
42R841Mechelen (Technologielaan)Fla  119       
 129         
44M705Roeselare (Haven)Fla  712141599912 
 66102013130141496
44N012MoerkerkeFla  912131310111212 
 611101513126141675
44N029Houtem (Veurne)Fla  589118888 
 55414911491135
44N051IdegemFla  1020222417211818 
 10714391222NA1916  
44N052ZwevegemFla  713171912115  
 62122514175    
44R701Gent (Baudelopark)Fla  914172014121113 
 88112218194NA17910
44R710DestelbergenFla  913181913131315 
 12511241915518161010
44R740Sint-KruiswinkelFla  1014161711131211 
 12712221415518140 
43N060Havinnes Wal  611121698910 
 755221015271846
43N063Corroy-Le-GrandWal  916202414143  
 124103415243    
43N066EupenWal  1021232910121415 
 118124215NA4201889
43N070MonsWal  512152113151011 
 7272712253161159
43N073VezinWal  1421252716151415 
 161016382121519171013
43N085VielsalmWal  10161720101099 
 15973113162121328
43N093SinsinWal  1015222617141212 
 165931252231716411
43N100DourbesWal  1420243121201514 
 2011123723329181767
43N113Saint-OdeWal  1121192213131212 
 14NA833171741814310
43N121OffagneWal  1216172213141110 
 201063313215171126
43N132Habay-La-NeuveWal  1318212515131110 
 191183618208121447
43R201LiègeWal           
            
43R221HerstalWal  917222312111213 
 1131336181531418812
43R222Liège (ISSeP)Wal  1018222413121213 
 1251237161931517813
43R240EngisWal  1525212312141314 
 16NA143515193201669
43R401NamurWal        97 
     NANANANA959
45R502LodelinsartWal  7161922111189 
 1048351418214948

* Not validated data.
"NA" means that there were less then 75% available days in the summer season (april-september) with sufficient measuring data to calculate the daily highest 8-hour mean ozone concentration.