The cumulative pollution index as of 2008 is 7.56, average with other Ukrainian cities. The main pollutant in the city is "Azot" plant, so the nearby area (south-east part of the city) is the most polluted.[5] The downtown area is heavily polluted as well, due to high traffic volume. The city itself is mostly clean of nuclear pollution from the Chernobyl disaster, although the northernmost part of Cherkasy may have been influenced a little.[6]