Sarajevo, Bosnia-Herzegovina, suffers from air pollution

Sarajevo has been hit by air pollution in recent days.

This is Sarajevo, the capital of Bosnia and Herzegovina, taken on December 20 in air-polluted weather. Xinhua/Reuters

This is Sarajevo, the capital of Bosnia and Herzegovina, taken on December 20 in air-polluted weather. Xinhua/Reuters

This is Sarajevo, the capital of Bosnia and Herzegovina, taken on December 20 in air-polluted weather. Xinhua/Reuters

This is Sarajevo, the capital of Bosnia and Herzegovina, taken on December 20 in air-polluted weather. Xinhua/Reuters

A woman wears a mask when she travels in Sarajevo, the capital of Bosnia and Herzegovina, on December 20. Xinhua/AP

This is a smog-shrouded building photographed in Sarajevo, the capital of Bosnia and Herzegovina, on December 19. Xinhua/AP

A man wears a mask when he travels in Sarajevo, the capital of Bosnia and Herzegovina, on December 20. Xinhua/AP

This is Sarajevo, the capital of Bosnia and Herzegovina, taken on December 20 in air-polluted weather. Xinhua/AP

This is a smog-shrouded building photographed in Sarajevo, the capital of Bosnia and Herzegovina, on December 19. Xinhua/AP

This is Sarajevo, the capital of Bosnia and Herzegovina, taken on December 20 in air-polluted weather. Xinhua/AP