Over the past years the averaged annual concentration of sulfur dioxide, dust and ozone has surged in the atmospheric air in Tbilisi. The carbonic oxide concentration has slightly increased, while the nitrogen dioxide concentration has slightly decreased.
According to the research by the National Environment Agency, based on indicators of three stationary stations, in 2015 the averaged lead content in atmospheric air was within norm, while the carbonic oxide content slightly exceeded the norm.
Based on the automatic station, the averaged annual concentration of all determined ingredients was within norm. Ozone was an exception and its averaged annual concentration slightly exceeded the limited norm.
In 2015 the national environment agency carried out indicator measurement of the atmospheric air quality for the first time.
At the first stage, indicator measurement was carried out at 35 points. All places demonstrated a low level of sulfur dioxide, ozone and benzol, and medium level of nitrogen dioxide.
At the second stage, indicator measurement works were carried out at another 35 places. All points recorded a low level of sulfur dioxide and ozone. Nitrogen dioxide was also within low and medium levels. Namely, medium level of nitrogen dioxide was detected at 6 points. Benzol index was low at all points, excluding one place, where a medium level was fixed.
The highest level of air pollution was recorded at Isani underground station, Public School N1, Rustaveli Avenue, central entrance of Mziuri Park, Melikishvili Avenue.
The indicator was recorded below the medium level on Tovstonogov Street, Nutsubidze, Ljubljana Streets, Ortachala Street and Vazha-Pshavela Avenue.