Iranian schools shut due to air pollution
Air pollution has forced schools to close on Sunday in parts of Iran including Tehran as thick cloud of smog coats large parts of Iran, according to state media.
The pollution level in the capital was deemed unhealthy for sensitive groups. Officials warned the elderly, the young and people with respiratory illnesses to stay indoors.
The decision to shut schools in the capital was announced late Saturday by Deputy Governer Mohammad Taghizadeh.
Air pollution causes nearly 30,000 deaths per year in Iranian cities and the problem only worsens in the winter as cold air traps hazardous smog over cities due to thermal inversion.