Although air polution is not generally considered a big issue in Brno, local bureau of hygiene measured above-regulation levels of nitrogen dioxide and dust in these places:
- Úvoz st., near Mendel sq. and Starobrno brewery.
- Svatoplukova st., a four-lane highway going through the former village of Židenice.
- Streets around main bus station, esp. Zvonařka st. and Masná st.
The main source of the pollution is automobile traffic – Brno is (and for the next twenty years will be) lacking a south-north by-pass road. The town council is trying to improve the situation by establishing “public transport and bikes only” lanes, but this is obviously not enough.