The temp is about 75 to 80 not sure about humidity tho i do take the cage in the bathroom once a day and run the hot water for about 20 min for the steam
heat could have been the issue which in hand most likely caused the RI. Definitely go to the vet cause its too late to do anything with out some anti-biotic. try and keep the basking area nice and hot like low 90's if you can. also at night try and prevent such a dramatic temp drop since your cham is sick. what i would do is temporarily use a ceramic bulb at night to keep them comfortable. from what i have learned, heat has everything to do with a chameleons immune system without a good strong heat source they will become prone to respiratory and other infection