epa11053281 A man wearing a face mask rides his bicycle during a foggy day in Skopje, Republic of North Macedonia, 02 January 2024. The Air Quality Index (AQI) this morning is 164, which is labeled as 'unhealthy', making the capital city one of the most polluted in the world, according to IQAir, a Swiss air quality technology company. The levels of toxic PM10 and PM2.5 particles in the air measured by IQAir in Skopje on 02 January were about 10 times higher than the safety threshold established by the World Health Organization. EPA/GEORGI LICOVSKI
