Azerbaijan Transport Air Pollution Profile 2026

Outline

AZERBAIJAN

TRANSPORT AIR POLLUTION PROFILE

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Background

Azerbaijan, an upper-middle-income economy in Central and West Asia, faces mounting challenges from transport-related air pollution, which threatens public health and environmental sustainability. With a population of 10.3 million and a GDP per capita of $24,764 in 2024, the country's economic growth has been accompanied by deteriorating air quality, which demands urgent policy attention.

The population-weighted annual average concentration of PM 2.5 in Azerbaijan has shown a modest but concerning increase from 23.2 micrograms per cubic meter in 2000 to 23.7 micrograms per cubic meter in 2023. While this level remains below the World Health Organization's interim target of 25 micrograms per cubic meter, it substantially exceeds the WHO air quality guideline of 5 micrograms per cubic meter, highlighting significant room for improvement. These concentrations are somewhat lower than the Central and West Asia regional average of 30.4 micrograms per cubic meter recorded in 2022, yet they still pose considerable health risks.

The human toll of air pollution in Azerbaijan is substantial. World Bank estimates indicate that 7,860 people died prematurely due to exposure to ambient PM 2.5 in 2019. More specifically, research by McDuffie and colleagues suggests that approximately 582 of these premature deaths could be directly attributed to transport tailpipe emissions. Occupational exposure to diesel engine exhaust claimed at least 30 lives in 2023, equivalent to roughly 3 deaths per million population. The State of Global Air further estimates that transport and international shipping contributed about 7.4 percent and 0.2 percent to ambient PM 2.5 concentrations, respectively, in 2019.

The economic burden of this pollution is staggering. The World Bank estimated that annual health damages in Azerbaijan from ambient and household PM2.5 exposure amounted to $11.5 billion in 2019, representing approximately 8 percent of the country's GDP. This figure is particularly striking when compared against Azerbaijan's healthcare expenditure of just 4.0 percent of GDP in 2022, suggesting that pollution-related health costs nearly double the nation's direct investment in healthcare. While this burden is somewhat lower than the Asia-Pacific regional average of 10.6 percent of GDP, it nonetheless represents a substantial drain on economic resources that could otherwise support development priorities.

Urban populations in Azerbaijan face disproportionate exposure to transport-related pollution. The Institute for Transportation and Development Policy estimates that only 60 percent of Azerbaijan's urban residents live beyond 500 meters from highways, meaning that two in five urban dwellers are in close proximity to significant sources of vehicular emissions. This spatial distribution of exposure compounds health risks, particularly for vulnerable populations including children, older people, and those with pre-existing respiratory conditions.

Azerbaijan's transport sector has emerged as a major contributor to air pollution, with emissions growth rates accelerating alongside economic development. Since 2010, the country's GDP has expanded at an average annual rate of 4.5 percent. During the same period, PM 2.5 emissions from the transport sector grew by 4.4 percent annually between 2010 and 2022, outpacing the 2.1 percent growth rate observed between 2000 and 2010. This acceleration suggests that transport emissions are becoming increasingly decoupled from economic efficiency gains. Other sectors have also contributed to the problem, with non-transport PM2.5 emissions increasing by 4.8 percent per year since 2010.

By 2022, the transport sector accounted for 48 percent of total PM 2.5 emissions in Azerbaijan, underscoring its central role in the country's air quality challenges. The modal distribution of these emissions reveals the overwhelming dominance of road transport, which accounted for 86 percent of transport-related PM2.5 in 2022, up from 81 percent in 2010. Domestic navigation accounted for 13 percent, while domestic aviation contributed just 1 percent. Rail transport, despite its potential as a cleaner alternative, contributed negligibly to PM 2.5 emissions.

Within the road sector, heavy-duty vehicles are the primary source of pollution. IIASA estimates that in 2025, heavy-duty vehicles accounted for 88 percent of PM 2.5 emissions from road transport in Azerbaijan, with light-duty vehicles contributing 8 percent, buses 4 percent, and motorcycles virtually nothing. This distribution highlights the critical need for policies targeting freight transport and commercial vehicle fleets. Additionally, non-exhaust emissions from resuspended dust, brake wear, and tire wear accounted for 25 percent of road-sector PM2.5 emissions in 2022, a proportion that has remained stable since 2010.

Nitrogen oxide emissions from Azerbaijan's transport sector have followed a similar trajectory of growth, increasing by 4.3 percent annually between 2000 and 2010, then moderating somewhat to 2.5 percent annual growth between 2010 and 2022. The transport sector's share of total NOx emissions is even more pronounced than that of PM2.5, reaching 62 percent by 2022. Road transport dominated this category as well, accounting for 92 percent of transport NOx emissions in both 2010 and 2022. Heavy-duty vehicles accounted for 75 percent of road-sector NOx emissions in 2025, according to IIASA estimates, with light-duty vehicles contributing 20 percent and buses 5 percent.

The pattern differs somewhat for sulfur oxide emissions, where the transport sector plays a smaller but still significant role. SOx emissions from transport grew by 2.2 percent annually between 2000 and 2010, then slowed to 1.2 percent growth between 2010 and 2022. By 2022, transport accounted for 16 percent of total SOx emissions, with domestic navigation the dominant source, accounting for 79 percent of transport SOx, up from 73 percent in 2010. This reflects the sulfur content of marine fuels. The share of SOx emissions in road transport declined from 22 percent to 15 percent during this period.

Methane and non-methane volatile organic compound emissions from transport also increased substantially. CH4 emissions from transport grew by 7.7 percent annually between 2000 and 2010, then moderated to 2.2 percent growth between 2010 and 2022, with 99 percent originating from the road sector by 2022. NMVOC emissions showed a similar pattern, increasing 7.6 percent annually between 2000 and 2010, then 1.6 percent between 2010 and 2022, with 99 percent attributable to road transport.

Black carbon emissions, which have significant climate-warming effects in addition to health impacts, grew modestly at an annual rate of 1.0 percent between 2000 and 2010, then accelerated to 4.5 percent between 2010 and 2022. Road transport accounted for 93 percent of BC transport emissions by 2022, up from 90 percent in 2010, with domestic navigation accounting for the remainder at 6 percent.

Azerbaijan's transport sector remains heavily dependent on petroleum products, which accounted for 99 percent of transport energy consumption in 2023, a slight increase from 98 percent in 2010 and 2015. The road sector accounted for 91 percent of total energy consumption, with domestic aviation 6 percent, domestic navigation 2 percent, and rail 1 percent. Despite global trends toward electrification, biofuels and electricity combined represented only 1 percent of transport energy consumption in Azerbaijan by 2023.

The rail sector has made notable progress in electrification, with electricity accounting for 95 percent of rail energy consumption in 2023, up from 84 percent in 2010. However, the carbon intensity of Azerbaijan's electricity grid remains a concern. The country's grid emission factor stood at 633 grams of CO2 per kilowatt-hour in 2024, higher than both the Asia-Pacific average of 559 and the Central and West Asia average of 495. While Azerbaijan has achieved a modest 0.5 percent annual improvement in grid emissions intensity since 2015, this lags behind the 1.4 percent annual improvement rate for Asia-Pacific as a whole.

A significant barrier to the adoption of cleaner fuels is the persistence of substantial fossil fuel subsidies. Between 2010 and 2015, Azerbaijan provided approximately $2.5 billion in fossil fuel subsidies to the transport sector. This figure more than tripled to $8.1 billion between 2016 and 2023. These subsidies impose additional external costs on society, with an estimated 40 percent of these costs manifesting as increased local air pollution. By artificially lowering fuel prices, subsidies discourage fuel efficiency improvements, delay the adoption of cleaner technologies, and perpetuate pollution-intensive transport patterns.

Despite these structural challenges, Azerbaijan has seen growing interest in electric vehicles. The value of EV imports reached $734 million between 2017 and 2024, representing 24 percent of total road vehicle imports by 2024. Light-duty vehicles accounted for 88 percent of EV imports, with goods vehicles and buses accounting for the remaining 12 percent; two-wheelers accounted for a negligible share. However, the country's readiness to support widespread EV adoption remains limited. The United Nations Environment Programme's E-mobility Readiness Index assigns Azerbaijan a score of 59 out of 100, with component scores of 12 for technology and market, 15 for policy, 21 for energy infrastructure, and 11 for financial instruments. These scores suggest considerable gaps in the enabling environment needed for a successful transition to electric mobility.

Motorization rates in Azerbaijan have increased from 137 vehicles per thousand population in 2000 to 161 by 2024, though this remains well below the Asia-Pacific regional average of 317 vehicles per thousand population. This relatively moderate motorization rate presents both a challenge and an opportunity. While it suggests potential for further growth in vehicle ownership that could exacerbate pollution, it also offers a window to implement sustainable transport policies before car dependency becomes deeply entrenched.

Azerbaijan's public transport infrastructure reveals significant deficiencies that contribute to car dependency and associated emissions. In 2015, the country had 6.2 kilometers of rapid transit per million urban population, a figure that remained unchanged through 2024, indicating stagnation in mass transit development. Among Azerbaijan's nine urban agglomerations, only 11 percent achieved an access level of 50 percent or better, meaning that in most cities, the majority of residents live more than 500 meters from public transport stops. In 56 percent of cities, eight out of ten residents lack convenient access to public transport. This infrastructure deficit forces many urban residents to rely on private vehicles, contributing directly to increased emissions and congestion.