Sweet Swede Posted February 15, 2020 Share Posted February 15, 2020 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 13th 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. Link to comment Share on other sites More sharing options...
Maestro Posted February 15, 2020 Share Posted February 15, 2020 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? Link to comment Share on other sites More sharing options...
JimmyJ Posted February 17, 2020 Share Posted February 17, 2020 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. Link to comment Share on other sites More sharing options...
JimmyJ Posted February 17, 2020 Share Posted February 17, 2020 (edited) Look at the non-stop 1 star ratings /comments of that app at Play Store. Edited February 17, 2020 by JimmyJ Link to comment Share on other sites More sharing options...
Puccini Posted February 17, 2020 Share Posted February 17, 2020 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? Link to comment Share on other sites More sharing options...
Puccini Posted February 17, 2020 Share Posted February 17, 2020 (edited) 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"? Edited February 17, 2020 by Puccini Link to comment Share on other sites More sharing options...
JimmyJ Posted February 17, 2020 Share Posted February 17, 2020 1 hour ago, Puccini said: What is your SNDWAY? SW-825 Link to comment Share on other sites More sharing options...
JimmyJ Posted February 17, 2020 Share Posted February 17, 2020 1 hour ago, Puccini said: What app do you mean with "that app"? The app under discussion - air4thai. Link to comment Share on other sites More sharing options...
JimmyJ Posted February 17, 2020 Share Posted February 17, 2020 https://forum.thaivisa.com/topic/1143946-cm-bus-route-signs-show-pm-25-aqi-info-how-accurate/ Link to comment Share on other sites More sharing options...
Puccini Posted February 17, 2020 Share Posted February 17, 2020 5 hours ago, JimmyJ said: SW-825 What is SW-825? Link to comment Share on other sites More sharing options...
motdaeng Posted February 17, 2020 Share Posted February 17, 2020 7 hours ago, Puccini said: What is SW-825? Link to comment Share on other sites More sharing options...
Puccini Posted February 18, 2020 Share Posted February 18, 2020 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? Link to comment Share on other sites More sharing options...
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