One exceedance of the average daily norms of fine dust particles was registered last week. On the territory of the municipality of Burgas for the period 15 - 21 March there were 2 automatic stations, 1 DOAS system OPSIS and 1 mobile station for air quality control. The concentrations of the pollutants sulfur dioxide, nitrogen dioxide, nitrous oxide, hydrogen sulfide, carbon monoxide, ozone, toluene, xylene, fine dust particles, benzene and styrene are monitored.