The recommended pool temperature range is 77-82℉, but it is okay to increase the temperature slightly higher than this. A lot of people find 85-88℉ enjoyable. You can try different temperature levels to find out which ones you enjoy best. Just be careful not to go above 90-95℉ as the excess heat can cause cardiac arrhythmias which could be fatal. Likewise, anything below 77℉ can affect your breathing and cause hypothermia.