Severe Haze Blankets Bangkok as PM2.5 Levels Rise

As of January 27, 2026, Bangkok is experiencing significantly elevated levels of fine particulate matter (PM2.5), with concentrations averaging 55.2 micrograms per cubic meter, surpassing the national safety standard of 37.5 mcg per cubic meter. The Bangkok Air Quality Information Centre has classified the air quality as “starting to affect health,” prompting health advisories for residents to wear protective masks outdoors and seek medical attention if they experience symptoms such as coughing or breathing difficulties.

Severe haze blankets Bangkok as PM2.5 reaches orange-level health riskAuthorities warn of rising PM2.5 levels across Bangkok, forecast to worsenBangkok calls for burning freeze as PM2.5 threatens air quality this week

The Pollution Control Department (PCD) has reported that stagnant atmospheric conditions and low wind speeds have exacerbated the pollution levels across Bangkok and surrounding provinces, including Samut Sakhon, Pathum Thani, and Nonthaburi. Major roads such as Phahonyothin Road and Ratchadaphisek–Tha Phra Road are among the most affected areas. Heavy traffic has further contributed to the accumulation of PM2.5, and forecasts indicate that pollution levels may worsen from January 27 to February 2, 2026.

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In response to the deteriorating air quality, the Bangkok Metropolitan Administration (BMA) has requested a temporary suspension of open burning from January 24 to 28, 2026. This request aims to mitigate PM2.5 pollution, with cooperation sought from Prachin Buri and six upwind provinces. The BMA has emphasized the importance of coordinated efforts to reduce agricultural burning, which has been linked to increased pollution levels in the capital. Prachin Buri has already implemented a province-wide ban on open burning, with legal penalties for violations.

Bangkok calls for burning freeze as PM2.5 threatens air quality this weekAuthorities warn of rising PM2.5 levels across Bangkok, forecast to worsenSevere haze blankets Bangkok as PM2.5 reaches orange-level health risk

Authorities are urging vulnerable groups, including children, the elderly, and pregnant women, to limit outdoor activities and utilize public transportation to reduce exposure to harmful air quality. The Ministry of Public Health has advised residents to monitor their health closely and to wear protective masks when necessary. Updates on air quality can be accessed through the Air4Thai website and mobile application.

Authorities warn of rising PM2.5 levels across Bangkok, forecast to worsen

While the government has taken steps to address the air quality crisis, some critics argue that more proactive measures are needed to combat the root causes of pollution, such as industrial emissions and urban planning issues. There are calls for long-term strategies rather than temporary solutions to ensure sustainable air quality improvements.

Authorities warn of rising PM2.5 levels across Bangkok, forecast to worsen

• “5 protective mask when outdoors and seek medical advice promptly if they feel unwell.” — Bangkok Air Quality Information Centre

Severe haze blankets Bangkok as PM2.5 reaches orange-level health risk

• “Thongchai stated that Prachin Buri has announced a province-wide ban on all forms of open burning from January 1 to April 30, 2026, covering all seven districts.” — Thongchai Butwong, District Chief of Mueang Prachin Buri

Bangkok calls for burning freeze as PM2.5 threatens air quality this week

The situation in Bangkok remains critical as authorities continue to monitor PM2.5 levels and implement measures to protect public health.

Authorities warn of rising PM2.5 levels across Bangkok, forecast to worsen