気温は

as for the temperature

→ 気温
phrase Rare #26,166
as for the temperature 気温 means “temperature,” and は marks it as the topic. In natural English, this is usually translated simply as “the temperature.”
JA: 気温は昨日より低いです。
EN: The temperature is lower than yesterday.

明日の気温はどうだろう

I wonder what the temperature will be tomorrow.

気温は上がっています

The temperature is rising.

今の気温は何度ですか

What’s the temperature right now?

明日の気温はどうなるか

I wonder what the temperature will be tomorrow.

気温は連続して何日も氷点下だった

Temperatures remained below freezing for several days in a row.

高く登れば登るほどますます気温は下がる

The higher you climb, the lower the temperature gets.

ここの気温は東京よりも高いんだ

The temperature here is higher than in Tokyo.