Tonga, a small Pacific island nation with 105,697 residents, enjoys generally good air quality due to minimal industrialization, though comprehensive AQI data is unavailable. It confronts acute climate threats like 5-10 mm annual sea level rise and more frequent cyclones, with temperatures increasing 0.2-0.3°C per decade. Government policies emphasize renewables (50% target by 2030) and marine protection, but recycling and green infrastructure data are lacking. High disaster risk from cyclones and tsunamis underscores adaptation needs.