Milan Experiences Unhealthy Air Quality, Ranks Among World’s Top 10 Most Polluted Cities
Milan, March 11, 2026 – Milan, Italy, recorded an ‘unhealthy’ air quality index (AQI) of 178 at 7:00 AM Pacific Time on March 11, 2026, positioning it among the top 10 most polluted cities worldwide. The poor air quality is attributed to a combination of dust and local emission sources, according to data from IQAir.
The city’s air quality conditions, much like weather, can change rapidly due to factors such as wind and other meteorological influences. For a real-time, comprehensive view of current pollution levels, residents are advised to consult the Milan air quality map.
Long-Term Air Quality and WHO Guidelines
While the immediate conditions are severe, the average PM2.5 concentration for Milan in 2024 stands at 18.1 µg/m³. This corresponds to an AQI of 63, falling within the ‘moderate’ category, yet it is four times higher than the annual guideline set by the World Health Organization (WHO).
On the morning of March 11, 2026, Milan was specifically identified as the second most polluted major city globally, highlighting a critical environmental challenge for the Italian metropolis.
When Will Milan’s Air Quality Improve?
Forecasts indicate a gradual improvement in air quality during the early hours of Thursday morning. This improvement is expected as dust plumes disperse further southeast of the Po Valley, allowing for better atmospheric conditions.
Factors Contributing to Milan’s Poor Air Quality
The current poor air quality in Milan is a confluence of several factors: Saharan dust, localized emission sources, and the city’s geographical characteristics.
- A Saharan dust plume has lingered over Italy for the majority of the past week, showing a slower dissipation compared to neighboring countries.
- Milan’s location within the Po Valley exacerbates air quality issues by trapping industrial emissions, traffic pollution, and agricultural runoff.
Although temperatures are currently rising, these conditions can intensify during the winter months due to stagnant air and thermal inversions, which further concentrate pollutants.
Protecting Yourself from Poor Air Quality
Residents are encouraged to take proactive measures to protect their health during periods of poor air quality:
- Utilize a free app for real-time air quality alerts and forecasts.
- Keep doors and windows closed, and set air conditioning systems to recirculation mode.
- Contribute to community outdoor air quality data.
- Remain indoors when air quality is poor; if venturing outside is necessary, wear a KN95/FFP2 mask.
- Employ a high-performance air purifier to filter out particles, gases, and other pollutants indoors.
IQAir, a Swiss technology company, emphasizes empowering individuals, organizations, and governments to enhance air quality through accessible information and collaborative efforts.
