TEHRAN, Dec. 23 (MNA) – The air quality index for the city of Tehran has reached 139 which is considered unhealthy for the sensitive groups. The pollution has forced school shut-downs in most cities of Tehran province on Tuesday and Wednesday.
TEHRAN, Dec. 23 (MNA) – The air quality index for the city of Tehran has reached 139 which is considered unhealthy for the sensitive groups. The pollution has forced school shut-downs in most cities of Tehran province on Tuesday and Wednesday.
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