The aim of the work was to find the temporal distribution of tropospheric ozone in connectionwith the course of meteorological conditions by night and daytime according to months, days and,next, hours and wind direction and to isolate a weather complex which was accompanied by thehighest concentration of O3. The foundation of the study was hourly values of O3 concentration in2005–2008, and hourly data on five meteorological elements (total solar radiation, air temperature,relative air humidity, atmospheric pressure and direction and velocity of wind) in April 2006, fromthe Widuchowa station located at the Polish–German border in North-West Poland. The effect ofmeteorological conditions on ozone concentration values was determined with the use of Pearson scorrelation analysis and cluster analysis. The highest mean concentration of ozone, out of the 48analysed months in 2005–2008, was recorded in April 2006, by daytime, with the wind comingfrom westerly, easterly, south-westerly and southerly directions. The following weather situationwas conducive to the highest O3 concentrations, amounting, on average, to about 127 μg.m-3:above-average mean total solar radiation (about 237 W.m-2), above-average mean air temperature(11.5°C), below-average relative air humidity (about 52%), above-average atmospheric pressure(about 1016 hPa) and above-average mean wind velocity (2.4 m.s-1).