How long will an uncorked open bottle of wine stay fresh?

An uncorked open bottle of wine typically stays fresh for about 3 to 5 days, depending on the type of wine. Red wines may last a bit longer than whites due to their higher tannin content. To maximize freshness, it's best to re-cork the bottle and store it in a cool, dark place or refrigerate it. After a few days, the wine may start to oxidize and lose its original flavors.