 From the national database ArcGIS on noise pollution by city over a 24-hour period of time. Noise pollution, of course, is measured by decibel meters placed at strategic points in the city, such as near traffic jams, which record decibel levels throughout the night. So here we go. The top ten list, starting with number ten. Top ten cities where you'll get the worst night's sleep. Number ten on the list, Oakland, California. Number nine, Long Beach, California.