The air pollution in Iran’s capital reached 124/cubic meter, Iran Quality Control Company stated. Authorities urged the residents to go outside only if necessary as particles smaller than 2.5 microns in the air damage the lungs, especially for the elderly, children and people with lung diseases. Kindergartens and primary schools were closed in Tehran. The government implements programs such as prohibiting the use of old vehicles in traffic, using single and double license plates in traffic, and relocating factories out of the city. Last year, 3,751 people died in Tehran as a result of air pollution.