According to the Ministry of Environment, Urbanization and Climate Change of Turkey, air quality in the country has improved by 16% in the past 5 years. The data was gathered from 365 stations permanently measuring air, water and soil quality. Turkey's air quality has been monitored since 2004. View a map of Turkey showing air quality by region here: https://www.havaizleme.gov.tr/
Spoiler: Alanya and Mersin are in the green zone:)