Currently means right now, at this present moment in time. When your teacher says the class is currently studying the American Revolution, she means that's what you're learning about now, not what you studied last month or will study next week. When a weather report says it's currently 65 degrees, that's the temperature at this exact moment.

The word helps us be precise about timing. If someone asks whether you play soccer, you might answer “I currently play on a travel team,” which tells them this is what you're doing now but leaves open the possibility that things might change. A news article might report that a store is currently closed for renovations, meaning it's closed right now but will eventually reopen.

You'll often see currently in writing that needs to be clear about when something is happening. A scientist might write that researchers are currently studying a new treatment, or a librarian might post that certain books are currently unavailable. The word is especially useful when situations are temporary or evolving. When you say “I'm currently reading The Phantom Tollbooth,” everyone understands you mean the book you're in the middle of right now, not every book you've ever read.