今天天气真好啊用英语怎么说用how

"The weather is really nice today" is a way to express the sentiment "今天天气真好啊" in English. The use of the word "nice" to describe weather is a way of saying that the weather is pleasant or enjoyable. The phrase "the weather is nice" is a commonly used English idiom and it is often used to make small talk or as a way to start a conversation.
Here are a few example sentences and their translations:
"The weather is so nice today, I think I'll take a walk." (今天天气真好，我想出去散步。)
"I love days when the weather is nice like this." (我喜欢天气这么好的日子。)
"It's a beautiful day, the weather is nice." (今天是个美好的一天，天气很好。)
It's worth mentioning that "nice" is a relatively informal and general term, it can also use other words such as "good", "pleasant", "beautiful" etc. to describe the weather.