Limit/target values and thresholds

Limit values for health protection and critical levels for protection of vegetation

Limit values are the strictest regulations for the levels of air pollution by the EU legislation. When the limit values are exceeded, the authorities are obliged to define measures to reduce the levels of pollutant concentrations. The most important limit values for health protection are those set for particulate matter and nitrogen dioxide concentrations. In Macedonia, the limit values for PM10 are exceeded widely and the exceedances of NO2 limit values are possible in traffic environments. For other pollutants the exceedances of limit values are not common.

In addition for the protection of human health, critical levels have been set for protection of vegetation. These are valid on rural agricultural and forest areas and are aimed at protection from the effects of pollution to trees, other plants and ecosystems. In Macedonia, the concentrations are below the critical levels.  

Limit values for health protection

Pollutant

Averaging period

Limit values

Allowed number of exceedances in a year

Date by which the limit value should be met

Sulphur dioxide

SO2

1 hour

24 hours

350 µg/m3

125 µg/m3

24

3

2012

Nitrogen dioxide

NO2

1 hour

1 year

200 µg/m3

40 µg/m3

18

2012

Particulate matter with size less than 10 µm

PM10

24 hours

1 year

50 µg/m3

40 µg/m3

35

2012

Particulate matter with size less than 2.5 µm

PM2.5

1 year

25 µg/m3

20 µg/m3

2020

2025

Lead

Pb

1 year

0.5 µg/m3

2012

Benzene

C6H6

1 year

5 µg/m3

2012

Carbon monoxide

CO

Maximum daily 8 hourly mean value

10 mg/m3

2012

Critical levels for protection of vegetation

Pollutant

Averaging period

Limit values

Sulphur dioxide

SO2

1 year

Winter period

20 µg/m3
Nitrogen oxides

NOx

1 year 40 µg/m3

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