Unable to find correct aqi Color at air4thai?

[Sweet Swede]

Are people at Pollution Control Department drunk when they fill in the index color in the maps at http://air4thai.pcd.go.th/.  I noticed this Many times now and also noticed they in general have significantly lower values than https://aqicn.org/map/thailand which is more in sync with my own measurements. From 13^th of February it is not allowed to burn anything and I noticed since then that from around noon until late it is fairly good air quality. But not in the morning when it is just as bad as before.

[Maestro]

1. Are both websites run by the government's Pollution Control Department?

 

2. Are you comparing values measured at the same station, at exactly the same time?

[JimmyJ]

I posted in the CM forum about a month ago that the real time PM 2.5 numbers on bus stop lighted signs were about 1/3 of the numbers my SNDWAY was simultaneously showing.

[JimmyJ]

Look at the non-stop 1 star ratings /comments of that app at Play Store.

[Puccini]

5 hours ago, JimmyJ said:

I posted in the CM forum about a month ago that the real time PM 2.5 numbers on bus stop lighted signs were about 1/3 of the numbers my SNDWAY was simultaneously showing.

What is your SNDWAY?

[Puccini]

5 hours ago, JimmyJ said:

Look at the non-stop 1 star ratings /comments of that app at Play Store.

What app do you mean with "that app"?

[JimmyJ]

1 hour ago, Puccini said:

What is your SNDWAY?

SW-825

[JimmyJ]

1 hour ago, Puccini said:

What app do you mean with "that app"?

The app under discussion - 

air4thai.

[JimmyJ]

https://forum.thaivisa.com/topic/1143946-cm-bus-route-signs-show-pm-25-aqi-info-how-accurate/

[Puccini]

5 hours ago, JimmyJ said:

SW-825

What is SW-825?

[motdaeng]

7 hours ago, Puccini said:

What is SW-825?

[Puccini]

Thank you.

 

Therefore, either your device or the one on top of the bus stop sign or both show wrong PM2.5 values. Is that it?