Smog covers much of the Czech Republic

Cold temperatures have trapped dust particles in the air

High levels of smog have been detected across much of the Czech Republic due to high levels of airborne particles. Regulations limiting production in some industries have taken effect in Prague, Central Bohemia and the Olomouc region. Smog at less severe levels has also been detected in the regions of South Bohemia, Plzeň, Ústí nad Labem, Pardubice, Hradec Králové, Zlín and Moravia-Silesia. Relatively clean air is on the regions of Karlovy Vary, Liberec, South Moravia and Vysočina.

Smog levels have been high in Central Bohemia since Thursday and in Prague since Friday.

People in the affected areas should take some precautions, especially people with chronic respiratory conditions, heart disease, the elderly and young children. People should avoid physical stress associated with rapid respiratory rate. All people in the affected areas are asked to limit driving so as to not contribute to air pollution, and to use public transportation whenever possible.

A smog situation is declared when airborne particles of a size designated as PM10 exceed the limit of 100 micrograms per cubic meter for 12 hours and are not expected to drop below that threshold for 24 hours.

The regulation limiting some industry takes effect if at least half of the stations in a region over 12 hours show average concentrations of airborne particles exceeding a limit of 150 micrograms per cubic meter, and the situation is not expected to change for 24 hours. 

The current smog situation is caused by cold temperatures, inversion and lack of wind. It A temperature inversion is an increase in temperature with height, which creates an inversion layer. An inversion can lead to pollution being trapped close to the ground.

For Information about air quality in the Czech Republic visit (CZ)

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