Parts of Moravia affected by smog

Parts of Moravia, particularly the Ostrava and Karvina regions report worsened air quality with dust particles in the air exceeding three times permitted norms. Children, chronically ill and elderly people have been advised to stay indoors. Heavily-industrialized Moravia and Silesia are particularly prone to smog in the winter months and the problem is aggravated by city transport and coal heating.