PM2.5 Alert: Bangkok Air Pollution to Exceed Safety Limits Dec 6–9

The Air Pollution Problem Communication Center (APPC) under Thailand’s Pollution Control Department (PCD) has issued a warning that PM2.5 fine particulate matter levels are expected to exceed national safety standards, particularly in Bangkok and its metropolitan areas, between December 6–9. The public is urged to refrain from open burning and to use public transportation to help reduce pollution levels.

As of 7:00 a.m. on December 4, 2025, the APPC reported that PM2.5 concentrations across Thailand exceeded safety standards in several areas, reaching the orange (moderate health impact) level, with Bangkok and surrounding provinces being among the most affected.

Regional PM2.5 readings were reported as follows:

- Northern region: 4.4–48.0 µg/m³

- Northeastern region: 9.3–32.8 µg/m³

- Central and Western regions: 24.5–49.6 µg/m³

- Eastern region: 16.9–55.9 µg/m³

- Southern region: 11.8–32.5 µg/m³

- Bangkok and metropolitan area: 27.3–62.1 µg/m³

The APPC noted that while PM2.5 levels in the Northeast have returned to within acceptable limits, pollution levels in Bangkok and its vicinity remain a major concern. The center warned that during December 6–9, PM2.5 concentrations are likely to exceed standards in multiple areas, with Bangkok and surrounding provinces facing the highest risk. Other regions requiring close monitoring include the Northeast, Eastern region, and the lower Northern region.

The warning comes as Thailand enters the sugarcane harvesting season, during which field burning often increases. The APPC reiterated its policy requiring sugar mills to ensure that burnt sugarcane accounts for no more than 15% of total cane processed. Authorities are also calling on the public to avoid all forms of open burning and to use public transportation to reduce traffic-related emissions and mitigate health impacts from PM2.5 pollution.

For vulnerable groups, including patients with underlying health conditions, children, the elderly, and pregnant women, authorities advise limiting outdoor activities. If going outside is unavoidable, individuals are urged to wear protective masks and follow health guidance issued by the Ministry of Public Health.

The Pollution Control Department emphasized that public cooperation is critical in reducing the severity of PM2.5 pollution and protecting public health during this high-risk period.

 

 

Source: www.thaihealth.or.th