Here is a portable air conditioner you can take outside to stay cool. The CoolingStyle has 1700btu/h cooling capacity and can cool a 55 sq.ft space down. It can run for up to 5 hours on a powerbank. The air conditioner has 3 fan speeds and cool settings. It has convenient features such as LED lights, SOS, and mosquito repeller.
CoolingStyle not only keeps you cool outside but also charges your phone when you need it. You can find out more about it here.