Monitoring results from equipment and stations at 59 locations nationwide—12 in Phnom Penh and 47 in the provinces—indicate that Cambodia’s air quality in the first quarter of 2026 was good when compared with the public air-quality standard used in the report.
However, a comparison of the first quarters of 2025 and 2026 shows a slight increase in average PM2.5 concentration, from 23.09 µg/m³ in 2025 to 24.28 µg/m³ in 2026.
Between January and March 2026, specialist teams also conducted six additional air-quality inspections and monitoring visits using a mobile vehicle in Pailin, Pursat, Koh Kong, Stung Treng, Mondulkiri and Ratanakiri, seeking accurate measurements and broad coverage.
The Ministry of Environment says it continues regular air-quality monitoring and transparent disclosure without concealment. The public can follow actual readings through airquality.moe.gov.kh, the CGS SPA mobile application and the ministry’s official Facebook page.
The ministry has also strengthened air-pollution prevention by working with relevant ministries, institutions and local authorities to educate and encourage people to stop burning agricultural waste, solid waste, rubbish, plastic and forests, which contribute to deteriorating air quality.
It has also run public campaigns including “Today I Do Not Use Plastic Bags”, “Clean Cambodia, Khmers Can Do It” and “National Roads Without Plastic Bags” to improve public awareness and participation in environmental protection and better air quality. It has publicised implementation of the government’s Circular No. 01 on preventing public air pollution and measures against forest fires. By: KPS99TV.
