PRAGUE, Feb. 15 (Xinhua) -- Large areas of the Czech Republic were covered by smog on Wednesday with poor dispersion conditions, local media reported Wednesday.
Besides Moravia, eastern Bohemia and Prague, where there was already smog situation since the previous days, the Pilsen region was also covered by smog.
The Czech Hydrometeorological Institute said the smog situation is due to high concentrations of airborne dust particles. Meteorologists do not rule out the possibility that regulations could soon be announced to limit some companies' dusty operations, such as heating plants, incinerators, cement factories and ironworks.
Smog situation is declared in the Czech Republic if the average 12-hour concentrations of PM10 airborne particles exceed 100 micrograms per square meter and their decrease under this limit is not expected in the following 24 hours.
The smog situation occurred in Prague in early February. The Prague City Hall urged drivers not to use their cars and switch to public transport.
In mid-January, Prague considered introducing free public transport during smog episodes.
