Sub legislation

Long term objectives for  O3

For Ozone, O3, are also set long term objectives. Ozone is a long range transboundary polluter, therefore the reduction of the ozone levels in each country separately is exceptionally difficult. The long term objective is an ozone concentration level that should be reached in long term in order to provide effective protection of the human health and the environment..

Long term objectives


Averaging period

Target values


Ozone  O3 Maximum daily 8 hours mean value 120 µg/m3


Ozone  O3 АОТ40, calculated from the hourly values from May to July 6000 µg/m3*h


The Law on ambient air quality and all relevant sub-legislation acts can be found on the following link from the web page of the Ministry of environment and physical planning:

Law on ambient air quality