For the second consecutive year, Sofia Municipality has successfully adhered to European and national standards for air quality concerning fine particulate matter (PM10). Data for 2024 reveal that the number of days with exceedances of the average daily limit of 50 µg/m³ remained below the maximum allowable threshold of 35 days at all monitoring stations in the city. The analysis of data spanning from 2017 to 2024 underscores a positive trend in reducing PM10 exceedances across all air quality