Does an antonym of ''freezing'' as a descriptor of weather exist?

On very cold days, someone can say that it's freezing outside. On very hot days of summer, can someone use cooking or any antonym of freezing, if one exists?

It's both a British and US colloquialism to use 'boiling'.

Also referenced here: http://www.thefreedictionary.com/boiling

I've also heard scorching used; it seems to describe the condition of the pavement quite well.

While 'boiling' is a commonly used option, my suggestion would be 'sweltering', as it removes any possible ambiguity.

Sweltering

I'm from Arizona where the weather is scorching and the people are roasting.

It's freezing outside. It's scorching outside.

I'm freezing. I'm roasting.

I'm surprised nobody mentioned blistering yet, which refers to intense heat.