AEROTHAI Tightens Air Traffic Control in Northern Thailand Haze

Aeronautical Radio of Thailand (AEROTHAI) has stepped up air traffic management in Thailand’s upper North as haze and PM2.5 pollution worsen, while confirming that flights remain safe. The measures are being implemented in line with Transport Ministry policy and aim to support aerial operations tackling air pollution. Despite reduced visibility, the agency said flight services have not been disrupted.

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The haze has affected provinces including Chiang Mai, Chiang Rai, Lampang, Tak and Mae Hong Son, where visibility has dropped as low as 1,200 metres. However, average daily visibility remains around 6 to 7 kilometres, above the minimum 800 metres required for landings using an Instrument Landing System Category 1. AEROTHAI said aircraft can continue to take off and land safely under current conditions.

Surachai Nuprom, executive vice-president and acting president of AEROTHAI, said the agency is closely monitoring conditions and has prepared contingency plans. These include air traffic management adjustments and coordination to divert flights to alternate airports if visibility falls below safety thresholds. He added that overall flight operations remain unaffected.

The agency is also supporting operations by the Department of Royal Rainmaking and Agricultural Aviation under the Ministry of Agriculture and Cooperatives. Since April 3, 2026, weather modification flights have been carried out across the affected northern provinces to help reduce haze and PM2.5 levels. In addition, AEROTHAI is assisting survey flights and wildfire control efforts, as forest fires remain a major source of pollution in the region.

Authorities say the coordinated response reflects broader government efforts to address air quality issues while maintaining aviation safety. AEROTHAI emphasised its role in supporting cross-sector operations, including environmental and disaster response missions, without compromising passenger safety or service standards.

The Nation reported that the agency said it will continue monitoring visibility and pollution levels and adjust operations as needed. Further coordination with relevant agencies is expected as efforts to reduce haze intensify, particularly if conditions deteriorate or require additional flight diversions.

Pictures courtesy of The Nation

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Adapted by ASEAN Now Nation 10 Apr 2026