Bangkok: The Pollution Control Department (PCD) has issued a warning about expected spikes in PM2.5 levels from February 19-21 due to accumulated hotspots and wind direction.
According to Thai News Agency, the PCD cautioned the public to remain vigilant as rising PM2.5 levels are anticipated due to hot and dry weather, increased hotspots, and wind patterns that may carry haze from neighboring countries into Thailand.
Mr. Surin Worakitthamrong, Director-General of the PCD, disclosed that Thailand is projected to officially enter the hot season in late February 2026. Rainfall across the country is below normal, especially in the central region, including Bangkok and its surroundings, with a forecast of 40% below normal levels. Meanwhile, the northern and northeastern regions are expected to see a 30% reduction in rainfall. This dry weather is conducive to wildfires and the accumulation of particulate matter in the atmosphere.
The monitoring of hotspot data from February 13-16, 2026, indicated a total of 2,806 hotspots, with 1,730, or 62%, being forest fires, signifying a sustained high level of burning activity. Neighboring countries have also experienced an increase in hotspots, potentially affecting Thailand's air quality, particularly when wind patterns promote transboundary pollution.
Mr. Surin further stated that special attention is required from February 19-21 in the central and eastern regions and provinces bordering neighboring countries. Southerly winds blowing northward may affect Bangkok, its surrounding areas, and the central region by making them downwind areas, while the northeastern region could experience easterly winds that carry haze and dust from outside the country into Thailand.
Deputy Prime Minister and Minister of Natural Resources and Environment, Suchart Chomklin, has directed relevant agencies to intensify efforts to combat drought and haze issues. This includes patrolling areas prone to recurring forest fires, preparing rapid response firefighting teams to operate around the clock, deploying aircraft in hard-to-reach areas, and rigorously enforcing laws against burning in forest and agricultural areas. Additionally, a "Reduce - Stop Burning" campaign will be initiated in all provinces.
The PCD requests public cooperation to abstain from all forms of open burning and to closely monitor air quality data. Vulnerable groups such as young children, the elderly, and those with respiratory conditions are advised to avoid outdoor activities during high particulate matter levels to prevent both short-term and long-term health impacts.