Mold means illness for some. In my building we already have had black mold problems leading to ACs needing replacement (yes...AC units are a major breeding ground for this potentially deadly mold) and walls being dismantled, treated and repaired. As this problem spreads with higher humidity, AC replacement will have to happen much more often as they become infested with mold. Maintenance of buildings will also go up because you can't kill this mold with household cleaners. Believe me. I know.

Higher temperatures and humidity means increasing tropical diseases in temperate zones, something that has already begun. Let's not forget that the US used to be a major malaria zone. Will that return? It is possible. West Nile is spreading. Etc. Here we are more in my expertise, and I can tell you that the US is not prepared for the spread of these diseases. Not only is our healthcare system already showing cracks, but we are already having trouble keeping our antibiotic arsenal ahead of evolving bacteria. Increase the population of bacteria (and if we continue our misuse of antibiotics in agriculture) we will see more rapid evolution of resistent bacteria. We are not ready for this.

Higher temperatures and humidity also mean increased insect populations. I predict next year will be a majorly bad insect (including mosquito) year will happen next year in much of the US due to the limited winter. We will have more and more years like this.

Multivariable equation. We can't focus on just two of the variables. We need to focus on all variables...including the dominant one which is the rising temperature.