I assume your PI is in a case, if it hasn't a heatsink on the CPU fit a tiny one if you can as airflow on most cases is abmismal leading to heat build up internally, or failing that adapt your case by drilling a few holes directly above the CPU and fit a tiny fan that is easily powered from the GPIO pins so it only comes on when the PI is on
I have a very tall heatsink and fan and my temps don't go above about 45c
I made the heatsink by ordering a block of 35mm tall heatsink and cutting a piece out so that it just overlaps the CPU on all sides and used heatsink glue. Heatsink pads don't work for me, unless you pay a LOT of money for top quality ones. The heatsink glue is basically heatsink paste in epoxy resin so once fitted your heatsink is never coming off unless you take the CPU with it. Also they take about 24 hours to set fully as its expoxy. It works perfectly though