Abstract
According to WHO research, airborne pollution by fine fractions of airborne particulate matter affects both morbidity and mortality, even at low levels of potential exposure. Whilst the majority of selected EU cities fulfils the annual emission limit of 40 µg/m3 in both monitored periods (as determined for all EU countries up to 2005) the recommended value of 30 µg/m3, covering both of the valid quality criteria for PM10 fraction, has been recorded in only one half of the cities monitored.