mikey88 Posted December 19, 2022 Share Posted December 19, 2022 Who do you trust…? Some of the most prominent sites have wildly different figures…? Link to comment Share on other sites More sharing options...
Popular Post Bill97 Posted December 19, 2022 Popular Post Share Posted December 19, 2022 5 minutes ago, mikey88 said: Who do you trust…? God 3 Link to comment Share on other sites More sharing options...
Stocky Posted December 19, 2022 Share Posted December 19, 2022 Just now, mikey88 said: Some of the most prominent sites have wildly different figures That's because they don't all report the same way. Some give current data, some give the 24hr average. You need to check the website and see what methodology they use. 1 Link to comment Share on other sites More sharing options...
OneMoreFarang Posted December 19, 2022 Share Posted December 19, 2022 As far as I know the AQI is a mix of several measurements. The measurements must all exist to give a correct value. It seems some sites and users don't know the difference between 0 and no data. Some use 0 if no data is available. And that obviously screws up the value of the AQI. 1 Link to comment Share on other sites More sharing options...
cjinchiangrai Posted December 19, 2022 Share Posted December 19, 2022 The AQI can vary a lot over the course of the day. The government tends to report the most recent measurement but other sites may do average sampling over a period of time. You can argue over which provides the most accurate assessment. I would not want averages over more than an hour or so but the instantaneous reading can be deceptive too. 1 Link to comment Share on other sites More sharing options...
KhunLA Posted December 19, 2022 Share Posted December 19, 2022 (edited) Have my own meter, and is usually in the same ball park as AirVisual/IQAir, not too far off of the other/air-quality https://www.iqair.com/th-en/ https://air-quality.com/? Windy: https://www.windy.com/-PM2-5-pm2p5?cams,pm2p5,2022121900,11.087,99.185,8 Edited December 19, 2022 by KhunLA Link to comment Share on other sites More sharing options...
mikey88 Posted December 19, 2022 Author Share Posted December 19, 2022 1 hour ago, KhunLA said: Have my own meter, and is usually in the same ball park as AirVisual/IQAir, not too far off of the other/air-quality https://www.iqair.com/th-en/ https://air-quality.com/? Windy: https://www.windy.com/-PM2-5-pm2p5?cams,pm2p5,2022121900,11.087,99.185,8 Thanks….I look at IQ Air too……for example though….at 9.20pm Dec 19……when I search AQI Chiang Mai……IQ air gives me a reading of 89………..and Accu…gives a reading of 29. Link to comment Share on other sites More sharing options...
KhunLA Posted December 19, 2022 Share Posted December 19, 2022 25 minutes ago, mikey88 said: Thanks….I look at IQ Air too……for example though….at 9.20pm Dec 19……when I search AQI Chiang Mai……IQ air gives me a reading of 89………..and Accu…gives a reading of 29. Accu is showing the PM2.5 reading IQ is showing (prominent) AQI reading, Agrees with Accu with PM2.5 reading, almost Link to comment Share on other sites More sharing options...
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