Any easy way to get notified when temperature is too high or show it on a website??

vcgencmd measure_temp

The temperature on my Pi is always around 70°C… whats wrong??

Nothing. The pi is fine unless/until it reaches 85C

EDIT: Merged your topics. Please try not to create an excessive number of threads on our forums.

You get a notification. A thermometer symbol appears in top right corner of screen.
But 70’C is quite normal - the notifications start at 80’C.