It sounds like you have experienced uncomfortable living conditions, but not necessarily illegal conditions. More would need to be known such as 1) what time of day does the construction noise occur, 2) does the landlord actually intrude into YOUR apartment, 3) the specific nature of the fumes and airborne pollutants. It's frustrating to receive a rent increase, but it does not necessarily mean you have a meritorious case for breach of the covenant of quiet enjoyment. Nevertheless, you should consult with an experienced landlord/tenant lawyer in your area to better explore your options. Good luck.