Questions & Answers about Wieczorem oglądam wiadomości w telewizji.
Wieczór is the basic dictionary form meaning evening.
In the sentence, wieczorem means in the evening or this evening. It is an adverbial time expression built from the noun. Polish often does this with parts of the day or seasons.
So:
- wieczór = evening
- wieczorem = in the evening
You would not normally say w wieczór for this meaning.
It depends on context.
With a present-tense verb like oglądam, the sentence often sounds habitual, so a natural English meaning is In the evening / In the evenings, I watch the news on TV.
But in the right context, wieczorem can also mean this evening.
If you want to make the repeated meaning especially clear, Polish often uses wieczorami, meaning in the evenings.