page_title: Environmental issues in Thailand
section_title: Air pollution
hierarchical_section_title: Environmental issues in Thailand / Air pollution
caption_attribution_description: Sukhumvit Soi 4/3 (Nana) intersection in Bangkok with scooters and motorcycles.
context_page_description: Thailand's dramatic economic growth has caused numerous environmental issues. The country faces problems with air, declining wildlife populations, deforestation, soil erosion, water scarcity, and waste issues. According to a 2004 indicator, the cost of air and water pollution for the country scales up to approximately 1.6–2.6% of GDP per year. As such, Thailand's economic growth has come at great cost in damage to its people and environment.
  Thailand's Twelfth National Economic and Social Development Plan warns that, "At present the country's natural resources and environmental quality are deteriorating, and have become a weakness in maintaining the basis of production, services and sustainable living. A large volume of the natural resources stock has been utilized for development, resulting in their continuous degradation. The forests have been depleted, the soil has become infertile, and biodiversity has been threatened. While exhibiting a future risk of water shortages, the existing supply of water has not been able to meet the demands of the various sectors. Conflicts over the use of natural resources stem from the unfair allocation of access and exploitation.
context_section_description: The World Bank estimates that deaths in Thailand attributable to air pollution have risen from 31,000 in 1990 to roughly 49,000 in 2013.
  Industrial growth has created high levels of air pollution in Thailand. Vehicles and factories contribute to air pollution, particularly in Bangkok, which experienced high levels of air pollution in the winter of 2019. Recent research (2019) points to agricultural burning as the root cause of PM 2.5 pollution in Thailand. PM 2.5 is a measurement of particulates in the atmosphere smaller than 2.5 microns.
  The Bangkok metropolitan region, which consists of the Bangkok Metropolitan Administration (BMA) and the four surrounding provinces (Nonthaburi, Pathum Thani, Nakhon Pathom, and Samut Prakan), holds about 20% of the national population and over half of the country's factories. Due to a lack of treatment facilities, increasing volumes of hazardous substances generated by industrial activities have caused serious dumping issues. Unless treatment facilities are built and institutions starts to regulate strictly, environmental contamination caused by hazardous waste threatens to become Thailand's worst environmental problem in the future.
  Thailand's Pollution Control Department (PCD) and other agencies have developed standards in order to reduce air pollution. The standards focus on shifting to lower-emissions vehicle engines and improving public transportation. In 1999, 80% of the motorcycles on the road in Bangkok had environmentally unfriendly two-stroke engines. Diesel trucks and buses also contribute many pollutants. In most areas of the country, air pollutants for vehicles are now within acceptable levels according to national standards.
  Factories and power plants have been required to reduce emissions. Bangkok and the rest of the central region contribute between 60–70% of the country's industrial emissions. Most power plants rely on burning fossil fuels.
  Other sources of air pollution include garbage burning, open cooking, and agricultural burning practices, including deliberate forest fires.
  Agricultural burning in Southeast Asia often creates haze. In 2003 Thailand ratified the ASEAN Agreement on Transboundary Haze Pollution to reduce the haze from forest fires, but issues throughout the region are still common. Wildfires are started by local farmers during the dry season in northern Thailand for a variety of purposes, with February and March as the two months when conditions are at their worst. In research conducted between 2005 and 2009 in Chiang Mai, average PM10 rates during these months were found to be well above the country's safety level of 120 μg/m³ (microgrammes per cubic metre), peaking at 383 μg/m³ on 14 March 2007. They are the main cause of the intense air pollution in the Thai highlands and contribute to the floods in the country by completely denuding forest undergrowth. The dry forest soil leads to lower water intake for trees to extract when the rains arrive.
  In February 2016, Director-General Chatchai Promlert of the Disaster Prevention and Mitigation Department, said that the haze affecting northern Thailand has reached levels that can be considered harmful to health. He said that the Pollution Control Department had reported that the levels of particulates measuring less than 10 micrometres—known as PM10—had crossed the prescribed safe threshold of 120 in four out of nine provinces where monitoring was conducted. The level of PM10 in the nine regions—Chiang Rai, Chiang Mai, Lampang, Lamphun, Mae Hong Son, Nan, Phrae, Phayao and Tak—was measured at between 68 and 160. The haze level was considered unhealthy in Chiang Mai, Lampang, Lamphun, and Phrae Provinces.
  During the burning season 2016 (February–April), air pollution has shown no improvement despite the government's purported efforts to ameliorate the burning. The Mae Sai District of Chiang Rai Province recorded a record 410 μg/m³ of harmful air particles in the early morning of 25 March 2016.
  From January–July 2016 the five Thai cities with the highest annual average concentrations of PM2.5 were Chiang Ma
caption: Motorbikes, Nana intersection, Bangkok
exif: {"Image Make": "Canon", "Image Model": "Canon DIGITAL IXUS IIs", "Image Orientation": "Horizontal (normal)", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2006:03:08 14:05:23", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "196", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "180", "Thumbnail YResolution": "180", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "2548", "Thumbnail JPEGInterchangeFormatLength": "7758", "EXIF ExposureTime": "1/60", "EXIF FNumber": "14/5", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2006:03:08 14:05:23", "EXIF DateTimeDigitized": "2006:03:08 14:05:23", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "5", "EXIF ShutterSpeedValue": "189/32", "EXIF ApertureValue": "95/32", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "95/32", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "173/32", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2048", "EXIF ExifImageLength": "1536", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "2048", "Interoperability RelatedImageLength": "1536", "EXIF InteroperabilityOffset": "1860", "EXIF FocalPlaneXResolution": "128000/13", "EXIF FocalPlaneYResolution": "128000/13", "EXIF FocalPlaneResolutionUnit": "2", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF SceneCaptureType": "Standard"}