[1] Thailand faces severe air pollution as a result of the burning of agricultural lands, industrial emissions, and transportation.

[4][1] In January and February 2025, a period of hazardous air quality in Bangkok has forced the closure of over 350 schools and a voluntary work-from-home scheme, along with restrictions on six-wheel trucks from some parts of the city.

[13] The House subsequently established a 39-member parliamentary committee chaired by Prime Minister Srettha Thavisin to amend the bill before presentation to parliament for second and third readings.

[13] The seven drafts under consideration are:[14] In January 2025, the Strategic Transformation Office's Clean Air Act working group chairman Buntoon Srethasirote expressed confidence the Clean Air Act would be passed by the House of Representatives in April 2025.

[2][15] Pheu Thai MP Jakkaphon Tangsutthitham, Chair of the Special Commission for the Consideration of the Draft Clean Air Act, described the process as 85% finalized, with the government having consulted stakeholders in the past year.