Hokkaido, the northernmost island of Japan, has been identified as having the cleanest air in Japan due to its low population density and natural landscapes. Tohoku, also located in northern Japan, comes in second place. Other areas with good air quality include Shikoku Island and parts of Kyushu Island towards the southern part of Japan. The Japanese government has taken steps to improve air quality by promoting renewable energy sources such as solar and wind power, encouraging public transportation use, and enforcing stricter emissions regulations for factories and vehicles. Individuals can also take steps to help improve air quality by reducing car usage and conserving energy at home. Living in areas with good air quality can have numerous health benefits including lower rates of respiratory illnesses such as asthma and bronchitis, reduced risk of cardiovascular disease, and improved overall well-being.