The greater the equivalent, the higher the temperature.
The temperature of the central explosion point of a general100000-ton nuclear bomb is100000 degrees Celsius (almost this temperature, with little difference).
The atomic bomb should be lower, because there is not such a high charge utilization rate.
Hydrogen bombs are similar, maybe a little higher than 1 billion.
But if it is a three-phase bomb (also a kind of hydrogen bomb, but the hydrogen bomb is covered with depleted uranium), the temperature should exceed 150 million, or even higher!
On the other hand, it's no use knowing this thing. Anyway, when it comes to a nuclear explosion, all objects are vaporized within the diameter range of the explosion point 1 km.
1 to 3 kilometers, all objects were shredded.
More than 3 kilometers, you should be able to leave a whole body.
Even if you can avoid ultra-high temperature, shock wave, electromagnetic radiation, etc. It is almost impossible for you to escape the last radioactive dust, either kneeling directly by high-dose radiation or cancer or leukemia.