Here in East Texas it is not only hot but humid. I consider the humidity to be the detailer's because problem. There is no way fans in a garage will help. When it is over 100 degrees each day and high humidity you must have air conditioning to work. And the bright sun is like a blow torch. That is why my detail work is done only in the spring, fall and winter. This climate explains why there is just one pro detailer in the entire region known as "East Texas"! Thankfully, I only have a couple vehicles to care for.
When a car needs some attention I get up early and put on my head-lamp and start working the interior and the wheels. With the dawn I am able to wash and my topper is on just as the sun reaches over the roof. The car is done by the time the sun hits my driveway. Working in the garage can't happen because it is too hot and outside the heat, coupled with the high humidity hazes every product. There is no LSP for example, either wax or sealant, that will not haze and become very difficult to remove in this kind of humidity. The only thing I can do for between detail protection is top my car wash with AquaWax (it is very difficult to work in humidity but it is worth it). For occasional gloss boost and dust removal the best working product in this kind of heat and humidity I have found is Griot's Speed Shine.