How much Internet do I need to install CS:Go on Steam right now?

I am planning to download CS:GO on my PC and I have some limited internet. How much data will be consumed to install it?

The download alone uses 9.6 GB of traffic.

Extracted on your disk it will be about twice that amount (depending on your activity even more as custom maps, models, etc will be added to the size).

According to the system requirements, CS:GO requires 15 GB of hard drive space. Based on this, the download size is in the realm of 15 GB.

You can check this more precisely by getting CS:GO, which is free, and trying to download it. Steam will inform you exactly how big the download is on the screen to select the install location.