This is the 201st most frequent Russian word.
хорошо
"Хорошо" means "well" or "good" in English.
Here, 'хорошая' is used as an adjective in the feminine singular form, showing agreement with the noun 'погода' (weather), describing its quality.
Сегодня погода очень хорошая.
Today's weather is very good.
Here, 'хорошо' is used as an adverb, indicating the manner in which the action of doing everything was performed.
Он всё сделал хорошо.
He did everything well.
Here, 'хорошо' is used as an interjection, expressing agreement or acknowledgement in the conversation.