Yom Posted February 19, 2021 Author Share Posted February 19, 2021 February 19, 2021 - 10:00 Big difference to yesterday. *************** Link to comment Share on other sites More sharing options...
VocalNeal Posted February 19, 2021 Share Posted February 19, 2021 How is the composite AQI calculated? Link to comment Share on other sites More sharing options...
Yom Posted February 19, 2021 Author Share Posted February 19, 2021 Good question, VocalNeal. I'm not happy with this table, but you might check it yourself: https://fit.thequint.com/health-news/explaining-air-quality-index#read-more Another good read: https://www.researchgate.net/publication/338354259_An_air_quality_composite_index_based_on_pollutant_concentration_factor_analysis Some screenshots? Chiang Mai Chiang Rai Phayao Lampang Phrae https://aqicn.org/here Worst air on Wednesday and Thursday this week in Chiang Mai. Qualified information and numbers here: http://www.air4thai.com/webV2/region.php?region=2 You're welcome. ******************** Link to comment Share on other sites More sharing options...
Yom Posted February 20, 2021 Author Share Posted February 20, 2021 February 20, 2021 - 8:00 ************ Link to comment Share on other sites More sharing options...
VocalNeal Posted February 20, 2021 Share Posted February 20, 2021 It looks somewhat obtuse and something we have to believe because the boffins say so? Ip = [(Ihi-Ilow)/(BPhi-BPlow)] (Cp-BPlow)+Ilow, Link to comment Share on other sites More sharing options...
Yom Posted February 20, 2021 Author Share Posted February 20, 2021 It's not a question of believe. Everyone should be able to read a PM2.5 meter. Here and now - it shows between 25 and 30 ug/m3. I think there are no other air pollutants to consider, so the AQI might be between 78 and 89. OK? By the way, a village nearby: AQI 81 Phrae city(20km) AQI 152-165 (https://aqicn.org/here) Some models: **************** Link to comment Share on other sites More sharing options...
Yom Posted February 20, 2021 Author Share Posted February 20, 2021 (edited) Feb 20, 2021 - numbers 17:00 Lampang/Mae Moh isn't too far from Phrae, Phayao, Chiang Rai, so I think this table might be interesting for all. # 4 another lignite fired power plant, may be without correct filters. ************* Edited February 20, 2021 by Yom Link to comment Share on other sites More sharing options...
VocalNeal Posted February 21, 2021 Share Posted February 21, 2021 OK we are 30 today. Link to comment Share on other sites More sharing options...
Yom Posted February 21, 2021 Author Share Posted February 21, 2021 February 21, 2021 - 11:00 Glad to read this. ChiangMai, Phrae, Lampang worse. PM2.5 ug/m3 AQI CR 36 / 101 CM 50 / 137 Phayao M. 38 / 107 Phrae 51 / 139 Lampang 121 / 181 ******************* Link to comment Share on other sites More sharing options...
Yom Posted February 22, 2021 Author Share Posted February 22, 2021 February 22, 2021 - 9:00 Upper north much better than the rest of Thailand 20 km north of Phrae PM2.5 165 ug/m3 ~ AQI 215 **************** Link to comment Share on other sites More sharing options...
Yom Posted February 22, 2021 Author Share Posted February 22, 2021 Feb 22 - 18:00 North of PM2.5 65 ~ AQI 156 **************** Link to comment Share on other sites More sharing options...
Yom Posted February 23, 2021 Author Share Posted February 23, 2021 February 23, 2021 - Bad air almost everywhere in Thailand even at 11:00 https://aqicn.org/here ******************** Link to comment Share on other sites More sharing options...
Yom Posted February 23, 2021 Author Share Posted February 23, 2021 (edited) Feb 23 e.g. between ChiangMai and Nakhon Sawan **** Real-time Thailand city ranking***** PM2.5 ug/m3 ~ AQI Lampang 137 / 193 Phrae 129 / 189 CM 48 / 132 Phayao 34 / 97 CR 27 / 82 *************** Edited February 23, 2021 by Yom Link to comment Share on other sites More sharing options...
Yom Posted February 23, 2021 Author Share Posted February 23, 2021 Feb 23 - Update PM2.5 ~ AQI ********************** Link to comment Share on other sites More sharing options...
Yom Posted February 24, 2021 Author Share Posted February 24, 2021 (edited) February 24, 2021 - numbers 6:00 PM2.5 ug/m3 ~ AQI Lampang 152 / 202 Phrae 137 / 193 ChiangMai 74 / 161 ChiangRai 63 / 155 Phayao 42 / 117 Some might remember this factsheet - epa.gov left: PM2.5-numbers right: AQI 2012_aqi_factsheet.pdf P.S. I know there are different models, I trust this one. By the way, at 10:00 north of Phrae PM2.5 230ug/m3 ~ AQI 280, while Nong Muang Khai shows an AQI of 315. Mai pen rai, 280 or 315... **************** Edited February 24, 2021 by Yom 1 Link to comment Share on other sites More sharing options...
Yom Posted February 24, 2021 Author Share Posted February 24, 2021 (edited) Feb 24, 2021 - numbers 18:00 Pm2.5 ~ AQI Lampang 172 / 222 Phayao 159 / 209 Phrae 129 / 189 CR 69 / 158 CM 49 / 134 https://www.iqair.com/thailand/phayao **************************************** Edited February 24, 2021 by Yom Link to comment Share on other sites More sharing options...
Yom Posted February 24, 2021 Author Share Posted February 24, 2021 (edited) February 25, 2021 - numbers 5:00 https://www.iqair.com/thailand/phayao https://aqicn.org/here ************** Edited February 24, 2021 by Yom Link to comment Share on other sites More sharing options...
Yom Posted February 25, 2021 Author Share Posted February 25, 2021 Feb 25, 2021 - 22:00 PM2.5 ug/m3 ~ AQI Phrae 134 / 191 Lampang 114 / 181 Phayao 106 / 177 ChiangMai 48 / 132 ChiangRai 40 / 111 ************************* Link to comment Share on other sites More sharing options...
Yom Posted February 26, 2021 Author Share Posted February 26, 2021 February 26, 2021 - 10:00 ************ Link to comment Share on other sites More sharing options...
Yom Posted February 26, 2021 Author Share Posted February 26, 2021 Feb 26 - 21:00 ************ Link to comment Share on other sites More sharing options...
Yom Posted February 27, 2021 Author Share Posted February 27, 2021 Februar 27, 2021 - 9:00 https://aqicn.org/here PM2.5 ug/m3 ~ AQI Lampang 177 / 227 Phrae 152 / 202 Chiang Mai 109 / 179 Phayao 92 / 170 Chiang Rai 72 / 160 Village, north of Phrae PM2.5 327ug/m3 ~ AQI 377 ******************* Link to comment Share on other sites More sharing options...
FlorC Posted February 27, 2021 Share Posted February 27, 2021 It sure took a turn for the worse !! This week and certainly today. Wasn't it prohibited to burn from febr 1 ? So huddle around the airpurifier all day ? Link to comment Share on other sites More sharing options...
Yom Posted February 27, 2021 Author Share Posted February 27, 2021 Feb 27, 2021 - 12:00 Different PM2.5 readings. http://www.air4thai.com/webV2/region.php?region=2 ~ AQI 164 https://aqicn.org/city/thailand/phrae-meteorological-station max. AQI 239 https://aqicn.org/station/สำนักงานสาธารณสุขจังหวัดแพร่ max. AQI 385 Village north of Phrae, 11:00 ********************** Link to comment Share on other sites More sharing options...
Yom Posted February 27, 2021 Author Share Posted February 27, 2021 Feb 27, 2021 - 18:00 *********** Link to comment Share on other sites More sharing options...
FlorC Posted February 28, 2021 Share Posted February 28, 2021 Nothing yet Yom ? Link to comment Share on other sites More sharing options...
Yom Posted February 28, 2021 Author Share Posted February 28, 2021 February 28, 2021 - 8:000 Very bad, indeed. Other places even worse! ************** Link to comment Share on other sites More sharing options...
Yom Posted February 28, 2021 Author Share Posted February 28, 2021 Feb 28, 2021 - 17:00 'Better' at night. **************** Link to comment Share on other sites More sharing options...
Tarteso Posted February 28, 2021 Share Posted February 28, 2021 (edited) Today began Dry season. Time to burn Thailand in a non-stop mode, until the raining comes. Today in Mae Taeng; My shield; Air purifier and air conditioner in non-stop mode. ???? Edited February 28, 2021 by Tarteso 1 Link to comment Share on other sites More sharing options...
Yom Posted March 1, 2021 Author Share Posted March 1, 2021 March 1, 2021 - 9:00 ************ 1 Link to comment Share on other sites More sharing options...
Yom Posted March 1, 2021 Author Share Posted March 1, 2021 (edited) Mar 1, 2021 - numbers 19:00 PM2.5 ug/m3 ~ AQI CM 52 / 141 CR 81 / 164 Lampang 175 / 225 Phayao 180 / 230 Phrae 200 / 250 Bangkok 24 / 77 Is there some kind of Government Agency responsible for the wealth of Thai People? - A good sign(?), the former French President Monsieur Sarkozy will go to prison. Very often tired of ThaiVisa: or Sorry, an unknown server error occurred when uploading this file. (Error code: -200) ************* Edited March 1, 2021 by Yom Link to comment Share on other sites More sharing options...
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