PM1
https://earth.nullschool.net/#current/particulates/surface/level/overlay=pm1/orthographic=116.33,38.78,1024/loc=151.426,47.667
토요일이지만 옛날같으면 북경근처는 뻘겋다 못해 시커먼거 나타나는데 많이 사라졌네요