Á morgun förum við með gler og plast í endurvinnslu.

we

Breakdown of Á morgun förum við með gler og plast í endurvinnslu.

• á morgun: tomorrow
• og: and
• í: for

Questions & Answers about Á morgun förum við með gler og plast í endurvinnslu.

Why does Á morgun come first—does it change the word order?

Yes. Putting a time expression first triggers Icelandic V2 word order (the finite verb comes in the second position).
So you get: Á morgun (time) + förum (finite verb) + við (subject) …
If you start with the subject instead, it would be: Við förum á morgun með gler og plast í endurvinnslu.

What exactly is á morgun grammatically? Why á?

Á morgun is an idiomatic time phrase meaning tomorrow. Literally it’s like on (the) morning, using the preposition á with morgun. You usually just learn á morgun as a fixed expression.

What verb form is förum? How do I know who is doing the action?

Förum is the present tense, 1st person plural form of fara (to go). It matches við (we).
So við förum = we go / we are going. With á morgun, it naturally reads as we’re going tomorrow (future meaning via context).

Why is Icelandic using present tense to talk about the future?

Icelandic commonly uses the present tense with a future time marker to express future plans:
Á morgun förum við… = Tomorrow we’re going…
You can use future-like constructions (e.g., munum), but the plain present is very natural here.