4/20(Sat) World’s cleanest air

World’s cleanest airports 2024:

1. Tokyo Haneda

2. Seoul Incheon

3. Singapore Changi

4. Doha Hamad

5. Centrair Nagoya

6. Tokyo Narita

7. Kansai

8. Hong Kong

9. Taiwan Taoyuan

10. Zurich

According to SkyTrax