Noise level will greatly increase to 45-60 decibels which is an average over 24hours including the planes that won't fly between 12 am and 6 am. We are under ozone alerts frequently in the summer months without added problems. No place at all if there has to be a fuel dump and the last meeting says yes, under emergencies they will dump on populated areas if necessary. If anything on a plane should break odds are it will hit a very populated area. It's a quality of life thing for me.
Occassionally a plane has gone by very low. It's always the hot topic at work and we all switch our TV's to a station that would report anything nasty. Perhaps we are just especially nervous based on historical problems nearby. My parents that live a mile from me have a clear view of NYC.
msv
I live in western Brooklyn. Planes fly over at less than 5,000 agl day and night. We don't hear them and we don't worry.