How many days of good air quality (based on the Air Quality Index) have Tehran residents experienced since the beginning of 2024!

According to Tabnak and the Public Relations Office of Tehran University of Medical Sciences, the Institute for Environmental Research, and based on a report from the Tehran Air Quality Control Company, from the start of 2024 until now, Tehran has experienced 5 days of "good" air quality, 135 days of "moderate" air quality, 59 days categorized as "unhealthy for sensitive groups," and 2 days as "unhealthy."