In 2025, the world’s cleanest countries are not just global leaders in environmental health—they are also innovators in climate policy, renewable energy, and sustainable development. These nations have earned top rankings through rigorous assessment by the Environmental Performance Index (EPI) and the Climate Change Performance Index (CCPI), which together provide the most authoritative and data-driven evaluations of national environmental performance.

The EPI, developed by Yale and Columbia Universities, uses 58 indicators across 11 categories—ranging from air and water quality to biodiversity and climate policy—to rank 180 countries on how well they meet sustainability targets. The CCPI, meanwhile, evaluates 63 countries and the EU, covering over 90% of global greenhouse gas emissions, and assesses performance in GHG emissions, renewable energy, energy use, and climate policy.

These indices are vital tools for policymakers, businesses, and communities, offering a granular view of each country’s strengths and weaknesses, helping to set targets, track trends, and identify best practices for a sustainable future. High-ranking countries benefit from advanced regulatory frameworks, greener infrastructure, and new market opportunities for sustainable technologies. Here’s a closer look at what sets each of the top 10 apart in 2025:

1. Estonia (EPI Score: 75.3)

Estonia leads the world in cleanliness and sustainability, thanks to its extensive forest cover, effective use of bioenergy, and a strong focus on natural resource management. The country has set ambitious climate goals, including a 70% reduction in greenhouse gas emissions by 2030 and carbon neutrality by 2050.

Estonia achieved an 11.3% emissions reduction in late 2024, outpacing the rest of the EU, even as its economy grew. The capital, Tallinn, has become a beacon of urban sustainability, winning the ITB Earth Award 2025 for its zero-waste Song and Dance Celebration, which drastically cut single-use plastics and promoted circular economy practices.

Estonia’s environmental policies have also led to Europe’s cleanest air and ongoing investments in wind, solar, and energy storage. However, the country faces challenges in fully phasing out fossil fuels and balancing biomass production with forest conservation.

2. Luxembourg (EPI Score: 75.0)

Luxembourg stands out as a small nation with outsized environmental achievements, earning an EPI score of 75.0 in 2024 and a 4.1-point rise over the past decade. The country leads the world in water management, boasting a near-perfect score of 90.6 in Water Resources and an astounding 99.8 in Sanitation & Drinking Water. Over 55% of Luxembourg’s land is protected, contributing to a top-tier biodiversity score of 84.8.

The nation’s capital has pioneered green investments, while advanced wastewater treatment and strict EU-aligned standards keep pollution low. While Luxembourg excels in ecosystem vitality and heavy metal pollution control, it continues to work on reducing per capita greenhouse gas emissions and curbing tree cover loss.

3. Germany (EPI Score: 74.6)

Germany ranks third globally with an EPI score of 74.6 in 2024, marking a 4.4-point improvement over ten years. The country treats 100% of its urban wastewater, achieving a high 89.1 in Water Resources, and protects a significant share of its land and seas, reflected in its 82.4 Biodiversity & Habitat score.

Germany’s robust environmental policies are complemented by massive investments in green infrastructure and renewable energy. The nation’s cities are recognized for clean air, efficient public transport, and progressive urban planning. Germany’s approach demonstrates that sustainability can go hand in hand with industrial progress, though ongoing industrial emissions remain a challenge.

4. Finland (EPI Score: 73.7)

Finland secures the fourth spot with a 2024 EPI score of 73.7, though this reflects a slight decrease from its 2014 score. The country is a global leader in public health, scoring a perfect 100.0 in both Sanitation & Drinking Water and Heavy Metals. Finland’s well-managed forests, protected natural areas, and clean air contribute to its strong ecosystem vitality.

The nation’s deep cultural connection to nature is evident in its policies, which seamlessly integrate sustainability into daily life. Finland’s challenge lies in maintaining its high standards amid growing urbanization and climate pressures.

5. United Kingdom (EPI Score: 72.7)

The United Kingdom earns an EPI score of 72.7 in 2024, up by 2.1 points over the past decade. The UK has made significant progress in reducing carbon emissions, largely through aggressive wind energy deployment and expanded recycling programs. Urban green spaces and biodiversity conservation have improved city livability and environmental health.

The UK continues to update its climate policies to meet international targets, but faces ongoing challenges with air quality in some metropolitan areas and the need for further emissions reductions.

6. Sweden (EPI Score: 70.5)

Sweden ranks sixth with a 2024 EPI score of 70.5, showing a modest 1.6-point increase over ten years. The country’s energy mix is dominated by hydropower and wind, and it is a pioneer in negative emissions technologies.

Sweden’s cities are models of sustainable urban development, and the nation’s commitment to clean air, water, and biodiversity is unwavering. However, Sweden faces pressure to further reduce emissions from transportation and industry to meet its ambitious climate goals.

7. Norway (EPI Score: 70.0)

Norway holds the seventh position with a 2024 EPI score of 70.0, up 3.6 points over the last decade. The country boasts nearly universal access to clean drinking water and sanitation, and its electricity is almost entirely supplied by hydropower.

Norway’s proactive climate policies and investments in electric mobility and carbon capture have resulted in some of the world’s lowest per capita emissions. The country’s challenge is balancing oil and gas exports with its climate commitments.

8. Austria (EPI Score: 69.0)

Austria scores 69.0 on the 2024 EPI, reflecting a slight decrease of 0.3 points over ten years. The country excels in maintaining clean cities and countryside through strict agricultural and chemical regulations. Austria’s public transport system and urban planning support eco-living, while strong environmental laws ensure high water quality and effective waste management.

Austria’s challenge is to address areas of stagnation and reinvigorate progress on climate adaptation and emissions reduction.

9. Switzerland (EPI Score: 68.0)

Switzerland earns a 2024 EPI score of 68.0, up 1.8 points over the last decade. The country is renowned for its pristine landscapes, robust waste management, and advanced water treatment systems.

Switzerland’s environmental protection laws and public engagement in sustainability initiatives help maintain high living standards and ecological health. However, Switzerland must continue to innovate in renewable energy and reduce its ecological footprint to stay ahead.

10. Denmark (EPI Score: 67.9)

Denmark rounds out the top ten with an EPI score of 67.9 in 2024, a 1.7-point increase over ten years. The nation is a global leader in wind energy and urban planning that prioritizes cycling and green spaces. Denmark’s comprehensive recycling policies and low pollution levels make it a model for clean living. 

The country’s ongoing challenge is to further cut emissions from agriculture and transportation while maintaining economic growth.

How Are These Rankings Determined?

Environmental Performance Index (EPI):

• Uses 58 indicators across 11 categories, including air quality, water and sanitation, biodiversity, habitat protection, and climate policy.
• Weights environmental health (40%) and ecosystem vitality (60%) to reflect both immediate human well-being and long-term sustainability.
• Draws data from the WHO, UN, and other global agencies, providing a scorecard for each country and highlighting leaders and laggards.

Climate Change Performance Index (CCPI):

• Assesses four main categories: GHG emissions (40%), renewable energy (20%), energy use (20%), and climate policy (20%).
• Uses 14 indicators, combining quantitative data (from IEA, FAO, UNFCCC) and qualitative expert assessments of national and international climate policy.
• Covers 63 countries and the EU, representing over 90% of global GHG emissions.

These indices are not just academic—they guide policy, inform investment, and help countries benchmark progress toward sustainability goals. High-ranking countries typically have strong regulatory frameworks, transparent governance, and engaged civil societies, making them attractive for sustainable business and investment.

Why Does This Matter?

• Policy Guidance: Countries use EPI and CCPI data to set targets, track trends, and refine environmental policies.
• Business and Investment: High scores signal a favorable environment for green investment and sustainable business operations.
• Public Health: Clean air, water, and effective waste management directly improve quality of life and reduce healthcare costs.
• Global Leadership: These nations serve as models for others striving to balance economic growth with environmental stewardship.

Summary point

As environmental challenges grow increasingly urgent worldwide, the achievements of these top 10 cleanest countries in 2025 offer both inspiration and a practical roadmap for sustainable development. Their success demonstrates that with visionary leadership, innovative technologies, and committed public participation, it is possible to safeguard natural resources, improve public health, and foster economic growth simultaneously.

By learning from their policies and practices, other nations can accelerate their own journeys toward a cleaner, greener, and more resilient future—ensuring a healthier planet for generations to come

Emirates Flight Catering has embarked on a landmark expansion with the ground-breaking of a new Dh160 million laundry facility under its Linencraft brand at Dubai Investment Park, creating 400 direct jobs and boosting its operational capacity by over 50 percent. This strategic investment addresses the surging demand in the UAE’s hospitality, aviation, and healthcare sectors amid rapid sector growth and infrastructure developments.

The new facility will add 150 tons daily to Linencraft’s current processing ability of 280 tons across four locations. It features two advanced modular hospitality bulk laundry units with a combined capacity of 142 tons per day, plus a dedicated garment plant that can handle over 28,000 pieces daily. This high-tech setup incorporates next-generation automation to enhance efficiency, reduce manual labor, and ensure resilience with built-in redundancies to maintain uninterrupted operations even at peak times.

 Energy-efficient systems are integrated to minimize environmental impact, reflecting a sharp focus on sustainability.

Shahreyar Nawabi, CEO of Emirates Flight Catering, emphasized the boldness of this move, stating, “This investment reflects both the scale of opportunity we see in the market and our determination to lead the industry forward. With this advanced facility, we’re not just increasing capacity we’re setting new standards through smart technology and sustainability.” The expansion is timely, as more than 10,000 new hotel rooms are expected in the UAE by 2027 alongside the upcoming major international events and Dubai Airport’s ongoing expansions, all driving a steep rise in demand for large-scale laundry services including staff uniforms and institutional laundry needs.

Linencraft currently serves over 100 clients across airlines, hospitality, healthcare, and corporate sectors, employing around 1,300 people. The new facility solidifies its position as the UAE’s largest and most trusted commercial laundry provider, capable of onboarding 40 additional hospitality clients with this capacity boost.
The project is led by UAE-based general contractor ASIA Prime, which is committed to delivering quality and operational excellence throughout the construction process.

This expansion complements broader Emirates Group initiatives, which recently unveiled a global talent drive to recruit 17,300 employees across Emirates and dnata, further underscoring the Group’s growth and commitment to meeting future demand in aviation and related services.

By scaling up climate-conscious operations and leveraging smart technologies, Emirates Flight Catering’s new Linencraft facility is poised to support the country’s booming service industries with efficiency, reliability, and sustainability well into the future.

IndiGo Airlines, India’s largest low-cost carrier, has aggressively expanded its cockpit workforce by recruiting over 1,000 pilots in the past two years, bringing its total pilot strength to 5,456 by the end of FY25. This milestone surpasses the combined pilot count of Air India and Air India Express, which stands at 5,449, underscoring IndiGo’s dominant position in the Indian aviation sector.

This rapid increase in pilot numbers coincides with IndiGo’s substantial fleet growth, currently operating 434 aircraft, with over 920 more on order, including long-range Airbus A321XLRs and A350s to support its international ambitions. The accelerated hiring is a strategic move to maintain operational reliability in the face of soaring passenger demand and an industry-wide shortage of pilots. It also differentiates IndiGo from competitors like Akasa Air, which faced pilot resignations and flight cancellations in late 2024.

India’s aviation market is witnessing unprecedented growth, with domestic air travel rising to 165 million passengers in FY25 a 17% increase over pre-pandemic levels and international travel up 49% to 34 million. Responding to this surge, IndiGo has also strengthened its cabin crew roster to over 10,212 personnel.

IndiGo is leading industry efforts in gender diversity, with women constituting 16% of its pilot workforce approximately three times the global average and aiming to reach 1,000 female pilots by 2025. The commitment to inclusivity was highlighted when the airline onboarded 77 female pilots on India’s 77th Independence Day.

Financially, IndiGo posted a profit after tax of ₹7,258 crore for FY25, marking its second consecutive year of profitability, in contrast to losses reported by other carriers such as Air India and Akasa Air.
Despite a 17% decrease in the issuance of Commercial Pilot Licenses (CPLs) in 2024, government data indicates there is currently no shortage of trained pilots in India, though the demand forecast is significant, with an estimated need for 21,500 pilots by 2034. IndiGo’s proactive recruitment and diversity initiatives position it well to meet the challenges of India’s rapidly expanding aviation market.

On 22 July 2025, Dubai, UAE, the Emirates Group launched an extensive global talent acquisition campaign aimed at recruiting 17,300 professionals during the current financial year. This hiring goal is symbolic, matching the population size of a mid-size town or the seating capacity of 58 Airbus A350 aircraft. The recruitment drive is part of the Group’s ongoing expansion strategy, reinforcing its industry-leading position.

The available opportunities span across 350 different roles across Emirates and dnata, the two flagship businesses under the Group. Emirates, recognized as the world’s most profitable and largest international airline, along with dnata, a global leader in air and travel services, are looking to fill positions that include cabin crew, pilots, engineers, commercial and sales teams, customer service, ground handling, catering, IT, human resources, and finance. Notably, dnata alone seeks over 4,000 specialists in cargo, catering, and ground handling operations.

HH Sheikh Ahmed bin Saeed Al Maktoum, Chairman and Chief Executive of Emirates Airline & Group, emphasized that this ambitious recruitment is aligned with Dubai’s Economic Agenda D33 and the Group’s growth trajectory. He expressed that the goal is to attract world-class talent capable of driving innovation, excellence, and the future transformation of the aviation industry. He views this initiative as an opportunity for skilled professionals to become integral to the Group’s ongoing success and expansion.

To reach potential candidates globally, the Emirates Group will hold over 2,100 open days and various talent acquisition events across 150 cities throughout the year. These events will provide a chance for prospective pilots, IT professionals, engineers, and cabin crew members to engage directly with recruitment teams and long-serving Emirates employees sharing their experiences. In addition to international outreach, Dubai-based events will focus on involving UAE national students and graduates, supporting national workforce development.

Since 2022, the Emirates Group has recruited more than 41,000 professionals, with nearly 27,000 in operational roles, contributing to the current workforce size of approximately 121,000 employees. The Group continues to be a magnet for talent around the world due to its strong brand reputation, people-centric policies, tax-free remuneration, comprehensive benefits, and esteemed training and career development programs.

In the past financial year alone, the Group received in excess of 3.7 million job applications, illustrating its global appeal. Candidates are drawn to Dubai not only for professional opportunities but also for the city’s safety, economic stability, advanced technological infrastructure, forward-looking policies, and vibrant lifestyle.

For those residing in Dubai and working for the Emirates Group, benefits are extensive, including eligibility for profit sharing, comprehensive medical and life insurance coverage, a wide array of travel benefits encompassing annual and service-related leave tickets, concessional rates for family and friends, discounted cargo rates, and membership privileges unlocking reductions at hundreds of retail, hospitality, and lifestyle destinations.

Candidates interested in joining the Emirates Group can explore available positions and upcoming recruitment events worldwide by visiting the Group’s official careers portal. This recruitment drive showcases the Emirates Group’s unwavering commitment to growth, innovation, and maintaining its status as a global employer of choice, while welcoming talented professionals prepared to contribute to shaping the future of aviation.