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Air Quality Assessment for Tashkent and the Roadmap for Air Quality Management Improvement in Uzbekistan

Core Content

This report provides a technical assessment of air quality in Tashkent and outlines a roadmap for improving air quality management in Uzbekistan. The assessment focuses on PM2.5 (particulate matter with a diameter less than 2.5 microns), which is identified as the most significant air pollutant for health impacts by the World Health Organization (WHO). The findings inform the development of sectoral policies and measures (PaMs) to address air pollution in Uzbekistan.

Main Points

Air Quality Assessment for Tashkent

• PM2.5 Concentrations: Ambient PM2.5 concentrations in Tashkent peak in winter and exceed international standards by over six times the WHO annual average guideline of 5 μg/m³.
• Health Impacts: The assessment estimates that PM2.5 pollution causes around 3,000 premature deaths annually in Tashkent and results in an estimated economic loss of US$488.4 million per year.
• Emission Sources: The main sources of PM2.5 pollution in Tashkent are:
  • Residential and Commercial Heating (nearly one-third of annual emissions)
  • Transportation (25% of annual emissions)
  • Heavy and Light Industry (22% of annual emissions)
  • Urban Dust (18% of annual emissions)
• Windblown Dust: Contributes the most to PM2.5 concentrations, especially in summer when concentrations are generally lower.
• Modeling Accuracy: Modeled PM2.5 concentrations matched 93% with monitoring data, validating the reliability of the model despite data limitations.
• Spatial and Temporal Analysis: Emission and concentration maps were created to show the distribution of PM2.5 across Tashkent, highlighting seasonal and regional variations.

Roadmap for Air Quality Management Improvement in Uzbekistan

• Objective: The roadmap aims to improve the overall air quality management system (AQM) in Uzbekistan by suggesting reforms, strengthening institutional arrangements, and promoting sustainable practices across key sectors.
• Key Components of the Roadmap:
  • AQ Monitoring: Develop a modernization plan for the air quality monitoring network, including automatic monitoring stations and updated laboratories.
  • AQ Standards: Align national standards with international best practices, particularly for PM2.5.
  • Emission Inventory: Update and strengthen the system to meet international standards and build technical expertise.
  • Data Management: Establish a comprehensive, user-friendly data management system and improve capacities for air quality analysis and forecasting.
  • AQM Policies: Develop a national strategy, strengthen regulations, and establish a coordination mechanism for AQM planning.
  • Sectoral Policies and Measures (PaMs):
    • Industry: Implement emissions control, cleaner production, and pilot greening interventions.
    • Transport: Set vehicle and fuel standards, regulate imports, improve public transport, incentivize non-motorized mobility, and establish low-emission zones (LEZ).
    • Heating: Improve fuel quality, heating appliance efficiency, and promote cleaner alternatives. Financial support is needed for vulnerable households.
    • Windblown Dust: Explore greening interventions to reduce dust transport into cities, which is a major contributor to PM2.5 pollution.
• Financing and Investment:
  • Develop financing mechanisms aligned with GHG reduction targets.
  • Introduce air quality improvement activities into the green taxonomy.
  • Provide budgetary support for key policy reforms and investment in emission reduction measures.
• Implementation Strategy:
  • Coordination among stakeholders and institutions is essential for effective implementation.
  • A cost-effectiveness analysis is required to prioritize measures that reduce pollution at the lowest cost.
  • The roadmap emphasizes the need for a holistic and long-term vision for air quality management.

Key Information

• PM2.5 is the primary focus of the assessment and is considered the most harmful air pollutant for public health.
• The report is part of a broader initiative to assess air quality in Central Asia and support regional cooperation.
• The AQM Roadmap outlines both short-term and medium-term priorities for improving air quality in Uzbekistan.
• The technical assessment provides the foundation for the roadmap by identifying key pollution sources and their contributions.
• Windblown dust is a major contributor to PM2.5 pollution, especially in summer, and its reduction may require a combination of local, national, and transnational measures.
• The roadmap includes policies and measures for all major sectors contributing to air pollution, with a focus on cleaner heating, transportation efficiency, and industrial emissions control.

Conclusion

The report highlights the urgent need for improved air quality management in Uzbekistan, particularly in Tashkent, where PM2.5 pollution poses serious health and economic risks. The roadmap provides a structured approach to addressing these challenges through a combination of policy reforms, technical improvements, and targeted investments. It underscores the importance of a multi-sectoral and integrated strategy to achieve sustainable air quality improvements.