Recurring South Asian smog episodes: Call for regional cooperation and improved monitoring
• South Asia stands out globally for fine particle pollution.
• The precise nature, sources, and potential transboundary impacts of air pollutants have been understudied in South Asia.
• Imbalanced AQ monitoring capacity is an impediment to regional cooperation that is critical in addressing air pollution.
• Revitalization of the Mal ́e Declaration would be one way to make progress.