Recommend a site or app that checks fine dust

pu1. http://aqicn.org/city/seoul/
I'm using overseas sites because I heard that the app in Korea is not accurate

2017-11-22

OK

pu2. If you search for fine dust on Naver or Daum, air pollution information comes up. I check that

2017-11-22

OK

pu3. If you search for fine dust in the Play Store, you can find some apps, and you can use the one you like

2017-11-22

OK

pu4. There is an Air Korea app made by the Korea Environment Corporation. This app shows the most accurate value. The rest of the apps are apps that evaluate good or bad by arbitrary interpretation based on this data. But he's the first data provider, and he can't be more accurate than the experts

2017-11-22

OK

pu5. In Korea, regardless of what kind of app we use, the Korea Environment Corporation is using the price of research
http://www.airkorea.or.kr/index
You can use it here

2017-11-22

OK