The Asian Transport Observatory has released a new set of profiles, the "Transport and Air Pollution Profiles," providing updated insights into how transport systems contribute to air pollutant emissions across Asia and the Pacific.

Air pollution remains one of the most significant environmental and public health challenges linked to transport in the region. While many countries have strengthened vehicle emission standards and improved fuel quality, rising transport demand and vehicle ownership continue to place pressure on air quality in many cities.

The profiles present concise, data-driven snapshots of transport-related air pollution across economies in Asia and the Pacific. They examine trends in key pollutants—including PM₂.₅, nitrogen oxides (NOₓ), sulphur oxides (SOₓ), and black carbon—and highlight how these trends relate to transport activity, vehicle technologies, and policy developments.

Each profile combines data insights and policy insights, presenting indicators on emissions trends alongside information on regulatory measures such as vehicle emission standards, fuel quality improvements, and other policy responses aimed at reducing transport-related pollution.

Together, the Transport and Air Pollution Profiles support a better understanding of how transport systems influence air quality and provide an evidence base to inform policies that promote cleaner and more sustainable mobility across the region.