Across Europe, the air we breathe is far from universally clean. A new report from IQAir, a Swiss air quality technology company, reveals a stark disparity: while some nations enjoy remarkably fresh air, others grapple with dangerously high levels of pollution. The 2025 World Air Quality Report, analyzing data from 2,303 cities across 43 European countries, paints a concerning picture, highlighting that five of the ten most polluted cities on the continent are located within Türkiye. This underscores a growing public health challenge and raises questions about the effectiveness of current environmental policies.
The report, released this month, found that only three European countries – Estonia, Iceland, and Andorra – met the World Health Organization’s (WHO) guidelines for safe levels of PM2.5, fine particulate matter considered most harmful to human health. PM2.5, measuring 2.5 micrometers or less in diameter, can penetrate deep into the lungs and bloodstream, contributing to respiratory illnesses, cardiovascular problems, and even cancer. The WHO recommends an annual average PM2.5 concentration of 5 micrograms per cubic meter (µg/m³), a threshold exceeded by a significant number of European cities. The increasing monitoring of air quality across the continent – the report analyzed 163 more cities than in 2024 – provides a more comprehensive, and often troubling, picture of the situation.
Türkiye at the Heart of the Problem
Türkiye stands out as a major contributor to Europe’s air pollution woes. Iğdır, a city in eastern Türkiye, topped the list with an average PM2.5 concentration of 64.4 µg/m³ in 2025, a level more than twelve times the WHO’s recommended limit. Buca, also in Türkiye, followed closely with 51.5 µg/m³, securing the second spot. Gödekli, Konya, and Duzce, all within Türkiye, also made the top ten, occupying fourth, sixth, and eighth places respectively. This concentration of highly polluted cities points to systemic issues within the country.
The primary drivers of this pollution are multifaceted. A heavy reliance on fossil fuels for energy production and transportation, coupled with dense urban traffic and industrial emissions, contribute significantly to the problem. Meteorological conditions, particularly during certain times of the year, can also trap pollutants close to the ground, exacerbating the situation. These factors combine to create a hazardous environment for residents in these cities.
Beyond Türkiye: A Balkan and Eastern European Struggle
While Türkiye bears the brunt of the most extreme pollution, other nations in Southeastern Europe also face significant challenges. Novi Pazar in Serbia ranked third with a PM2.5 level of 34.1 µg/m³. Cities in Bosnia and Herzegovina – Prijedor, Gorazde, and Gracanica – also appeared in the top ten, highlighting a regional pattern of poor air quality. Eight countries overall – Bosnia and Herzegovina, North Macedonia, Serbia, Türkiye, Moldova, Romania, Montenegro, and Poland – reported PM2.5 concentrations exceeding 15 µg/m³, far above the WHO’s safe level.
The underlying causes in these regions often include aging coal-fired power plants, the widespread use of low-quality coal and wood for household heating, and inadequate infrastructure for managing emissions. Geographical factors, such as valleys that trap air, also play a role. These conditions disproportionately affect vulnerable populations, including children, the elderly, and those with pre-existing respiratory conditions.
A Breath of Fresh Air: The Nordic Exception
In stark contrast to the polluted cities of Southeastern Europe, several Nordic nations consistently demonstrate exceptional air quality. Finland leads the way, with 25 cities recording PM2.5 levels below the WHO guideline. The island of Utö boasted the cleanest air in Europe, with a PM2.5 concentration of just 1.3 µg/m³. Muonio and Kittilä, also in Finland, followed closely, securing second and third place respectively. Sweden and Iceland also feature prominently among the least polluted cities, with several locations recording exceptionally low PM2.5 levels.
Finland’s success is attributed to a combination of factors, including favorable geography, low population density, strict emissions controls, and a high percentage of renewable energy sources – exceeding 54 percent. Similar factors contribute to the clean air in Sweden, and Iceland. These nations serve as examples of how proactive environmental policies and a commitment to sustainability can significantly improve air quality.
Protecting Yourself and Looking Ahead
Exposure to PM2.5 poses significant health risks, ranging from respiratory irritation to cardiovascular disease and long-term illnesses like cancer. Individuals living in highly polluted areas can grab steps to mitigate their exposure, including monitoring air quality levels in real-time using apps like IQAir and AirVisual. When pollution spikes, staying indoors with doors and windows closed, and using air purifiers with HEPA filters, are recommended. Wearing a KN95 mask outdoors can also provide some protection. You can identify more information on protecting your health during periods of high pollution here.
The IQAir report serves as a critical reminder of the ongoing challenges to air quality in Europe. While some nations are making progress, significant disparities remain. The European Commission is currently reviewing its air quality standards, with potential revisions expected in the coming months. These revisions, and the implementation of more stringent national policies, will be crucial in ensuring that all Europeans have access to clean, healthy air. The next update on the EU’s air quality review is scheduled for release in late summer 2026, and will provide further insight into the continent’s commitment to tackling this pressing environmental issue.
What are your thoughts on the air quality in your city? Share your experiences and concerns in the comments below, and please share this article with your network to raise awareness about this important issue.
