This is the 133rd most frequent Chinese word.
太
"Too" or "very" (indicating excess or emphasis).
In this sentence, '太' means 'too' or 'excessively' to express that the weather being hot is beyond a comfortable or acceptable level.
今天天气太热了。
Today the weather is too hot.
Here, '太' conveys strong admiration, and is often paired with an exclamation to emphasize the intensity of the adjective.
这件衣服太漂亮了！
This piece of clothing is incredibly beautiful!
'太' in this context conveys high appreciation or gratitude, specifying an extreme positive feeling towards someone's action or character.