Thailand's environment is under pressure from climate change, with average temperatures rising 0.9°C from 1990-2020 and increasing flood frequency. Air quality remains stable but urban PM2.5 levels often exceed WHO guidelines. The nation covers 37% forest area, hosts 156 national parks, and pursues 20-30% renewable energy by 2037. Challenges include coastal sea level rise of 3-5mm/year and frequent disasters, balanced by policies like the Paris Agreement commitments and plastic bans.