Slovenia
Air quality in Ljubljana is acceptable. Consider reducing intensity or duration.
Data from ARSO • Updated 7:22:04 AM
Ljubljana's air quality is monitored by ARSO (Slovenian Environment Agency), providing highly accurate local data. The city sits in a basin that can trap pollutants during winter inversions, when PM10 levels rise from residential heating. The car-free city center and proximity to nature make it a runner-friendly city.
Ljubljana typically sees AQI values between 20 and 55. Winter inversions in the Ljubljana Basin are the main concern, with PM10 from wood-burning heating systems occasionally pushing readings into the Moderate range.
Morning runs along the Ljubljanica river or the Path of Remembrance and Comradeship offer great conditions. Spring through autumn has consistently clean air, while winter runners should check ARSO data for inversion days.