Local authorities announced that all schools in Tehran and Alborz provinces will be closed between Monday, December 23, and Friday, December 27, due to air pollution. Associated business disruptions are possible in Tehran and Alborz provinces, and throughout Iran in the coming hours and days.
Individuals in Tehran and Alborz provinces, and in Iran more generally, are advised to monitor the situation, limit outdoor activities until the situation normalizes, and wear N95 rated masks as a protection. Children and those with chronic respiratory illnesses should exercise increased caution. Individuals are advised to seek medical attention if experiencing breathing difficulties or other health concerns.