The Noise Management department measures the noise levels around Zurich Airport.
Flughafen Zürich AG is currently measuring aircraft noise at 14 fixed monitoring terminals.
You can download Flughafen Zürich AG's noise bulletins from the last few years here.
The noise data recorded at the various monitoring terminals can be found each month in the noise bulletin.
Noise contour maps
The Swiss Federal Laboratories for Materials Testing and Research (EMPA) calculates the aircraft noise immissions.
These aircraft noise contour maps highlight the areas where maximum noise levels are exceeded.