1noahb1 explained the situation in regards to using a Raspberry Pi 5 as an Arduino board target for uploading sketches written in Arduino IDE.
In case you are interested in using the Raspberry Pi 5 as a host on which to run Arduino IDE for writing sketches targeting normal Arduino boards, just as we do on any other PC, then the answer is yes. There is an official Linux ARM build of Arduino IDE 1.8.19 available for download from the link on the Software page here:
I have tried it on my Raspberry Pi 5 and it seems to work just fine, just as it did on the previous Raspberry Pi models. I'm sure we would have seen reports here on the forum if there were significant problems. I recommend just going ahead and giving it a try. If you run into any problems, the forum helpers might be able to provide assistance.
As for the modern Arduino IDE 2.x, Arduino does not currently provide builds of the IDE for Linux ARM hosts of any type at this time. The developers are tracking the need to provide such builds here:
If you have a GitHub account, you can subscribe to that thread to get notifications of any new developments related to this subject:
A community member does produce unofficial 3rd party build of Arduino IDE 2.x for Raspberry Pi. In case you would like to give it a try, it is available here:
Note that this build is not produced or supported by the Arduino organization.
