I'm sweltering. Let's just stay home.

THE weather's getting hotter and you're looking for ways to stay out of the heat. But can you describe really unbearable weather? Try these:

I'm not going to that party. It's hot as blazes outside. 我不去那个舞会了。外面热的像着了大火一样。

hot as blazes: colloquial. A "blaze" is a large fire (大火，烈火).

I wouldn't go out. You could fry an egg on the sidewalk. 我不想出去，天气热得连人行道上都可以煎蛋了。

When we describe something as very hot, we can say "热(烫)的都可以把鸡蛋煮熟了". Here, the English equivalent for the phrase is "you could fry an eggs on it" .

I'm sweltering. Let's just stay home. 我热得难受！我们还是呆在家里吧。

swelter: 热得难受，热得喘不过气来. Also: "It's sweltering".

Let's cancel the appointment this evening; it's a scorcher outside! 我们取消晚上的约会吧，外面太热了。

scorcher: colloquial (大热天). A similar expression is "It's roasting" (天太热了).

Hey, I'm melting. Would you please turn on the air conditioner right now? 我热得快化了，赶快把空调打开吧。

melt：熔化.

I'm sweating like a pig, and I can't concentrate on my homework. 我热得汗流浃背，没法集中精力做作业。

sweat like a pig: colloquial (大汗淋漓，汗流浃背). Also: "It is sweating" or "I am sweating".

It's hot as hell. I hope it rains this evening. 这里热得跟地狱一样，希望晚上能下场雨。

hot as hell: Everyone knows that, down where the devil lives, there are fires roaring.