You have to keep in mind that oils are fragile and need to be treated gently in order to preserve both their taste and healthful properties. Keep your oil away from direct light and preferably in a dark storage area away from windows.
Heat, air and light are the enemies of oil.
Keep your oil away from any heat source as exposure to heat from a nearby oven can harm it. Furthermore, take into consideration the fact that air can degrade oil quality and prevent your oil from being exposed to air. Therefore keep the bottle of your olive oil tight closed. An open bottle allows air to access the oil which accelerates the oxidation process.