МакедонскиInformation and alert thresholds
Information thresholds define the short term levels of concentrations which when exceeded will pose a risk to human health from brief exposure for particularly sensitive parts of population and for which immediate and appropriate information is necessary. Alert thresholds define the short term levels of concentrations which when exceeded will pose a risk to human health from brief exposure for the population as whole and for which immediate steps are required to reduce the pollution. Information threshold for ozone is occasionally exceeded in populated areas. Exceedances of alert thresholds are not common.
Information and alert threshold
|
Pollutant |
Averaging period |
Information threshold |
Alert threshold |
| Ozone O3 | 1 hour | 180 µg/m3 | |
| Ozone O3 | 3 consecutive hours |
240 µg/m3 |
|
| Sulfur dioxide
SO2 |
3 consecutive hours |
500 µg/m3 |
|
| Nitrogen dioxide
NO2 |
3 consecutive hours |
400 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:
Due to the frequent exeedances of the daily average limit value for particulate matter with size less than 10 micrometers (РМ10) especially in the winter period, and because thresholds are not prescribed in the current legislation, Government of the Republic of Macedonia on 108th session, following a proposal of the intersectoral working group of air quality, adopted the following thresholds:
| Pollutant | Period | Alert threshold |
| Particulate matter with size less than 10 µm | 5 consecutive days | >50 µg/m3 |
| Period | Information threshold | |
| 10 consecutive days | >100 µg/m3 |
