Here the air is only 3 days clean
4 April 2012 Republic
]]The capital of Tehran reported that the air was only three days in the last year "very clean".
According to the news of theFars News Agency, the air measurement report on a year-round period covering 21 March 2011-21 March 2012. Accordingly, in the capital, only three days in one year "very clean" and 144 days in the "clean" air sauce. [
The number of days in which entrepreneurs spend in the last year as "unhealthy" and "very unhealthy" was determined as 218. Among the information contained in the report that the air pollution in the city increases significantly according to the passing and the previous year.
]The fact that the air circulation is not enough due to its spatial and residential properties, the exhaust gases in which the motorcycle and low model vehicles are extracted by millions at the beginning of the factors that increase air pollution in the city. Especially in the summer, sandstorm from Arab countries is expressed to be one of the elements that increase air pollution.
When the air pollution in the city reaches a critical level, schools and other official apartments are declared holiday, especially if the patient is not forced from citizens.
]Source: News