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

Cebu Pacific, the Philippines’ largest low-cost airline, has announced a special seat sale in honor of the country’s 127th Independence Day, offering one-way base fares from Dubai to Manila for just Dh3. The promotion, part of the airline’s annual Super Seat Fest, is available for bookings made between June 11 and June 15, 2025. The travel period for these discounted tickets spans from December 1, 2025, to May 31, 2026, making it ideal for those planning year-end holidays or summer visits to the Philippines.

The Dh3 fare covers only the base ticket price, with additional charges for taxes and surcharges. Cebu Pacific’s extensive network allows travelers to connect from Manila to 37 domestic and 26 international destinations, including popular tourist spots like Boracay, the Banaue Rice Terraces, Vigan, and Davao’s Seven Falls. The airline encourages passengers to explore the Philippines’ rich historical and cultural sites, such as Intramuros and the National Museum complex in Manila.

Booking is available through Cebu Pacific’s official website, with multiple payment options including credit cards, debit cards, and e-wallets. The airline also offers special guidelines for families traveling with infants or minors: infants under two years old may travel on an adult’s lap for an infant fee, and strollers or car seats can be brought free of charge. Children aged 12 and above are considered adult guests, and minors traveling with parents only need to present documents proving their relationship, such as a birth certificate or valid IDs.

Seats at the promotional rate are limited and subject to availability, so travelers are encouraged to book early. Cebu Pacific’s Super Seat Fest is a recurring event, celebrated alongside major milestones and holidays, and continues to be popular among Filipinos abroad looking for affordable ways to reunite with family or explore the country’s diverse attractions.

Etihad Airways has officially unveiled an exciting new competition aimed at both new and existing Etihad Guest members. Dubbed "The Extraordinary Challenge," this initiative invites participants to embark on a journey to visit 15 new year-round destinations added to Etihad's route network in 2025.

The first member to complete this challenge will be awarded an astounding five million Etihad Guest miles, marking the largest prize in the loyalty program's history.

Mark Potter, Managing Director of Etihad Guest, expressed his enthusiasm for the campaign, stating, “This challenge embodies Etihad’s purpose to give flight to ambition. We’re inviting our adventurous members and travelers to explore 15 incredible destinations while competing for our largest-ever miles prize.”

The Challenge Overview

Participants in The Extraordinary Challenge will compete to be among the first three members to visit all 15 destinations, which include:

• Addis Ababa (Ethiopia)
• Algiers (Algeria)
• Atlanta (USA)
• Chiang Mai (Thailand)
• Hanoi (Vietnam)
• Hong Kong (China)
• Krabi (Thailand)
• Medan (Indonesia)
• Peshawar (Pakistan)
• Phnom Penh (Cambodia)
• Prague (Czech Republic)
• Sochi (Russia)
• Taipei (Taiwan)
• Tunis (Tunisia)
• Warsaw (Poland)

Prize Breakdown

The competition's top three finishers will be rewarded as follows:

• 1st Place: 5 million Etihad Guest miles
• 2nd Place: 3 million miles
• 3rd Place: 1 million miles

These miles can be redeemed for flights, holidays, and a wide array of items from the Etihad Guest Reward Shop. For context, five million miles could equate to over 500 Economy flights, more than 70 Business class trips, or around 40 First class journeys.

Engaging Features

To enhance the experience, participants will have access to a dedicated race dashboard, complete with a digital passport that gets stamped with each destination visited. This feature encourages continued travel and rewards every milestone. A live leaderboard will track each member's progress, fostering a sense of community and friendly competition among passionate travelers.

How to Participate

The challenge is open to both new and existing Etihad Guest members, making it an inclusive opportunity for anyone eager to explore. To enter, members must register through the official competition link and track their progress throughout the challenge. Terms and conditions apply.

Participants are required to fly on an Etihad-operated flight to or from all specified destinations by 25 May 2026.

Join the Adventure

Those interested in joining The Extraordinary Challenge can register at click here. Members are encouraged to share their journey on social media using the hashtag #EYextraordinarymiles as they race toward this once-in-a-lifetime opportunity.

With this innovative initiative, Etihad Airways is not only enhancing the travel experience but also inspiring its members to explore the world in a competitive and rewarding way.

Travelers looking to save on their next journey have reason to celebrate: KU Airways has unveiled a limited-time promotion offering discounts on both Economy and Business Class fares. The special offer, available with the promo code MAY15, is valid for bookings made between May 15 and June 7, 2025, for travel through December 2025.

How to Avail the Offer

Customers can access the promotion in several convenient ways:

• Online: Enter the promo code MAY15 when booking via the KU Airways website or mobile app.

• Phone: Book through the KU Airways call center by dialing 171.

• In Person: Visit any KU Airways office or authorized travel agent.

Promotion Highlights

• Cabins: Valid on both Economy and Business Class.

• Travel Period: Book now, fly anytime until December 2025.

• Flights: Offer applies exclusively to flights operated by KU Airways. Codeshare, interline, and partner airline flights are not included.

• Discount: The promotion provides a discount on the base fare only. All applicable taxes, fees, and surcharges remain payable by the passenger.

• Availability: Seats are limited and subject to availability at the time of booking. Fares are not guaranteed until ticketed.

Important Terms and Conditions

• The promotion cannot be combined with other offers or discounts.

• KU Airways reserves the right to discontinue the promotion at any time.

• All other fare rules and conditions apply as per the ticket at the time of booking.

Why Book Now?

With flexible travel dates extending through the end of the year and savings available in both Economy and Business cabins, this promotion is ideal for both leisure and business travelers. Whether planning a family holiday, a business trip, or a spontaneous getaway, passengers can enjoy significant savings on KU Airways’ renowned service.

Travelers are encouraged to act quickly to secure the best fares, as availability is limited and the offer ends June 7, 2025.

For more information or to book, visit the KU Airways website, app, call 171, or contact your nearest KU office or travel agent today.

Travellers eyeing affordable summer getaways are in for a treat as Wizz Air Abu Dhabi announces a 15% discount on select flights to and from the UAE capital. The offer is valid for bookings made for travel between May 1 and June 30, 2025.

The ultra-low-cost carrier, a joint venture between Abu Dhabi Developmental Holding Company (ADQ) and Hungary-based Wizz Air, is rolling out the promotion to fuel summer travel demand. Bookings can be made exclusively via the airline’s official website and mobile app.

While Wizz Air hasn’t released a complete list of discounted routes, the offer includes several popular regional and European destinations, targeting budget-savvy flyers looking to explore more for less during the peak travel season.

The promotion aligns with Wizz Air Abu Dhabi’s ongoing expansion strategy, reinforcing its commitment to growing a cost-effective network out of the UAE capital. Since its launch in 2021, the airline has focused on short- and medium-haul destinations, aiming to make travel accessible for all.

Travellers are encouraged to act fast—discounted seats are limited and only available within the promotional booking window.

Qatar Airways Holidays, the leisure division of the award-winning Qatar Airways, has unveiled meticulously curated travel packages for the FIFA World Cup 2026™, the largest-ever edition of the tournament spanning 16 host cities across Canada, Mexico, and the United States.

The historic event, featuring 48 teams and over 104 matches, will unite football fans globally, with Qatar Airways Holidays providing end-to-end solutions that include international and domestic flights, luxury accommodations, intercity transfers, stadium transport, and guaranteed match tickets.

These packages, available in phases leading up to the tournament, prioritize convenience for fans, offering four- and five-star hotel stays in prime locations, seamless airport-to-stadium logistics, and flexible booking options through a dedicated digital platform.

As FIFA’s Official Global Airline Partner through 2030, Qatar Airways will leverage its vast network of over 150 destinations and its Privilege Club loyalty program, allowing members to earn Avios points on every package component—from flights to hotel stays—redeemable for future travel or upgrades.

Steven Reynolds, Senior Vice President of Qatar Airways Holidays and Discover Qatar, highlighted the company’s fan-first approach: “Our packages are designed to eliminate travel complexities, ensuring supporters can focus entirely on the tournament. From curated city-hopping itineraries to exclusive hospitality experiences, we’re delivering unmatched access to this global celebration of football.”

The phased release strategy aims to accommodate diverse fan needs, with early registrants gaining priority access to premium match tickets and hotel inventory. Qatar Airways’ partnership with FIFA, active since 2017, underscores its commitment to global sports development, complementing its portfolio of high-profile collaborations with entities like UEFA, Formula 1®, and the Brooklyn Nets.

The airline’s role extends beyond logistics, offering cultural immersion opportunities, such as curated stopovers in Doha, where travelers can explore Qatar’s heritage ahead of their World Cup journey.

Exclusive Member Benefits and Global Reach:

Privilege Club members enjoy double-dip rewards, earning Avios on flights and Qpoints on total package value, alongside exclusive Cash + Avios redemption rates for significant savings. Qatar Airways Holidays’ partnerships with over 300,000 hotels and 40+ cruise lines ensure tailored experiences, whether fans seek urban hubs near stadiums or tranquil retreats between matches.

The division’s 170+ destination network and multi-city flight options simplify cross-border travel across the three host nations, with dedicated customer support teams assisting in customizing itineraries.

Registration and Competitive Edge:

With demand expected to surge, early registration via qatarairways.com/fifa26 is encouraged. The first-come, first-served model prioritizes accessibility, while the platform’s real-time availability tracking and flexible payment plans cater to diverse budgets. Qatar Airways Holidays also guarantees price-match competitiveness, ensuring bundled flights and accommodations remain cost-effective compared to piecemeal bookings.

Legacy of Sports Excellence:

Building on its success as the official carrier for the FIFA World Cup Qatar 2022™, Qatar Airways continues to champion global sports through partnerships with rugby’s British and Irish Lions, tennis icon Novak Djokovic, and motorsport events like MotoGP. Its 2026 travel packages reinforce this ethos, blending operational precision with fan-centric innovation, setting a new standard for mega-event hospitality.

About Qatar Airways Holidays:

Operating in 84 countries, the division specializes in seamless travel experiences, from curated stopovers in Doha’s cultural landmarks to event-centric bundles for Formula 1® and UEFA tournaments. Its integration with Privilege Club elevates loyalty rewards, while its focus on accessibility—including multilingual support and 24/7 assistance—ensures a stress-free journey for fans worldwide.

As the authorized provider for FIFA’s marquee event, Qatar Airways Holidays reaffirms its position as a leader in global sports tourism, transforming how fans engage with the world’s most beloved tournaments.