Currently the 7+ day detail view you show:
Hours
Temperature
Rain
Wind
Wind gusts
Wind dir.
Showing humidity would be amazing. We live near the coast and 70f 90% humidity can be dangerous for hiking, even going down to 70% humidity makes a huge difference in safety. But we have no way (that I'm aware of) to view humidity forecasts.
While we're on the topic, are humidity forecasts accurate?