Tehran’s air, due to increased pollutants, is currently at a level “unhealthy for sensitive groups.” The national meteorological organization issued an orange alert for Tehran, Isfahan, Tabriz, Karaj, Ahvaz, and Mashhad, warning that if the stable weather pattern continues and pollution sources are not contained, the air-quality index in these cities may reach the “dangerous” … Continue reading Air Pollution in Several Major Iranian Cities May Reach Dangerous Levels