February 19, 20215 yr Author 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. ********************
February 20, 20215 yr It looks somewhat obtuse and something we have to believe because the boffins say so? Ip = [(Ihi-Ilow)/(BPhi-BPlow)] (Cp-BPlow)+Ilow,
February 20, 20215 yr Author 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: ****************
February 20, 20215 yr Author 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. *************
February 21, 20215 yr Author 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 *******************
February 22, 20215 yr Author 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 ****************
February 23, 20215 yr Author February 23, 2021 - Bad air almost everywhere in Thailand even at 11:00 https://aqicn.org/here ********************
February 23, 20215 yr Author 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 ***************
February 24, 20215 yr Author 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... ****************
February 24, 20215 yr Author 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 ****************************************
February 24, 20215 yr Author February 25, 2021 - numbers 5:00 https://www.iqair.com/thailand/phayao https://aqicn.org/here **************
February 25, 20215 yr Author 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 *************************
February 27, 20215 yr Author 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 *******************
February 27, 20215 yr 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 ?
February 27, 20215 yr Author 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 **********************
February 28, 20215 yr Author February 28, 2021 - 8:000 Very bad, indeed. Other places even worse! **************
February 28, 20215 yr 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. ????
March 1, 20215 yr Author 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) *************
Create an account or sign in to comment