Bangkok was blanketed with excessive PM2.5 dust yesterday, measuring between 55 and 90 microns per cubic metre (µg/m3), above Thailands “safe” threshold of 50. Air quality has improved slightly today, with only 22 areas found to have PM2.5 dust above 50 microns. The limit set by the World Health Organisation is 25 µg/m3.

The Pollution Control Department (PCD) announced the levels of PM2.5 dust in the atmosphere today were measured between 38 and 79 microns, with excessive dust in 22 areas, including Lat Phrao Soi 95 in Wang Thong Lang district, which recorded the highest level, 79 µg/m3.

Bangkok Municipality spokesman Pongsakorn Kwanmuang said today that several Bangkok private schools couldn’t suspend classes because their students are in the middle of final exams and that they’ve been warned to wear face masks to school. All Bangkok public schools were ordered shut until Friday

Bangkok areas with excessive PM2.5 dust today include:

Tambon Hirunrujee in Thon Buri district
Kanchanapisek Road in Bang Khun Thian district
Tambon Bang Na in Bang Na District
Tambon Khlong Chan in Bang Kapi district
Tambon Din Daeng in Din Daeng district
Tambon Chong Nonsee in Yan Nawa district
Rama IV Road in Pathumwan district
Intharapitak Road in Thon Buri district
Lat Phrao Road in Wang Thong Lang district
Din Daeng Road in Din Daeng district
Tambon Plabpla in Wang Thong Lang district
Tambon Bang Kruay in Bang Kruay district of Nonthaburi

GRAPHIC: Airvisual.com

SOURCE: Thai PBS World

Bangkok mums and dads will need to sort out what to do with the kids for the rest of the week after the Bangkok Metropolitan Administration closed public schools from today because of the excessive air pollution. Most of the smoke and haze is blowing in from Cambodia with light easterly winds.

All schools under the supervision of the BMA will close until Friday. Air quality in the capital has worsened over the past two days with Bangkok recurring the world’s 5th worst air pollution yesterday (today it is 10th). The forecast today is for light winds and poor air circulation which will compound the accumulation of PM2.5 dust and smoke particles.

In other measures City Hall is asking high-rise construction and electric train construction sites to suspend their operations until Friday.

And on the transport front Police have been asked to prevent trucks with six wheels or more from accessing the Ratchadapisek ring road until midnight on Thursday and to set up roadblocks to check vehicle exhaust emissions.

Most of these measures will do little to improve the overall situation as the poor air quality in the capital is caused by plantation burn-offs from sugar, corn and rice fields in the central, north and north-east, plus easterly airflows blowing in the same burn-off smoke from Cambodian farms.

Back in the city, district officials and municipal police will patrol open areas to make sure there is no burning outdoors, while city workers will spray water in the air and on roads to wash away dust.

The whole of Bangkok and its vicinity were found to contain excessive amounts of PM2.5 dust and smoke particles yesterday, measuring up to 188, nearly 4 times the upper safe limit imposed by the Pollution Control Department, and nearly 8 times the limit set by the World Health Organisation.

62 air quality measurement stations in Bangkok and neighbouring provinces, including Samut Prakan, Samut Sakhon, Nonthaburi and Pathum Thani, show the health threatening levels of PM2.5, which exceed the 50-micron safety threshold. The highest level was found at Tambon Paknam in Muang district of Samut Prakan.

This morning the highest readings around Bangkok are 160 but out to the west, in the Ratchaburi province, readings are up to 208. Pattaya has readings up to 159. Up in the north, Chiang Mai has a reading this morning of 165, and central Thailand’s Kampaeng Phet measured the country’s worst today at 218. The windflower map shows the easterly winds blowing the forest and plantation smoke from Cambodia and Laos into Thailand. Chiang Mai is listed as the world’s 5th worst air pollution today.

Check out the actives fires, principally responsible for causing the air pollution around Bangkok today, HERE.

Read The Thaiger’s editorial about the air pollution ‘elephant in the room’ HERE.

Air pollution readings from AirVisual.com

Public schools in the Bangkok municipality have been ordered shut until Friday due to severe air pollution in the nation’s capital. Air quality in the city worsened today and the situation is likely to continue due to poor air circulation and accumulation of PM2.5 dust in the atmosphere. Bangkok Metropolitan Administration (BMA) spokesman Pongsakorn Kwanmuang said today that the city will ask high-rise and electric train construction sites to suspend operations until Friday, the second such move in recent weeks.

Police have been requested to stop trucks of six wheels or more from accessing Bangkok’s Ratchadapisek ring road until midnight on Thursday and to set up roadblocks to check vehicle emissions. Officials and police will patrol open areas to ensure there is no outdoor burning, and city workers will spray water into the air and on roads to wash away dust.

The whole of Bangkok and its vicinity were found to contain excessive amounts of PM2.5 dust this morning, measured at between 55-90 microns per cubic metre, according to the Pollution Control Department (PCD), higher than Thailand’s threshold of 50, wand well above the World Health Organisation’s standard of 25.

In the eastern province of Rayong, the PCD reported this morning that air quality readings showed levels of PM2.5 ranging from 58 to 118 microns in Tambon Huay Pong, Tambon Noen Phra, Tambon Tapong and Tambon Map Ta Pud in Muang district and Tambon Tha Toom in Sri Mahapo district.

The highest level of PM 2.5 was reported in the northernmost province of Mae Hong Son, at 125.

SOURCE: Thai PBS World