"more humidity" is correct and usable in written English.
You can use it when referring to an increase in humidity, which is the amount of moisture in the air. For example, "The temperature may decrease during the winter months, but there is often more humidity in the air."
The northwest trade winds bring more humidity and rain from late November through January.
Similar temperatures and more humidity are expected today, and thunderstorms are possible late in the day.
If you have a cellar, which is usually cooler with more humidity, store your cheese there.
Though temperatures began to rise again Sunday, more humidity was expected on Monday, which would further aid the firefighting effort.
"There's a lot more humidity and the heat is much more of a factor for us out here.
It will use new energy-efficient engines, and its interior cabin is being designed to provide more humidity and bigger windows for passenger comfort.
On the contrary, a higher affinity of TiO2 towards toluene adsorption even under highly humid conditions can allow more humidity-independent catalytic activity of NiO/TiO2/SiO2.
We suggest that the modulation of surface structure of supporting materials of nanoparticle catalysts can be useful for fabrication of more humidity-resistant heterogeneous catalysts.
During the dry periods of the Holocene, J. excelsa could have replaced other more humidity-demanding tree species (Elenga et al. 2000; Mudie et al. 2002; Cordova et al. 2009; Jalut et al. 2009) and consequently its distribution could have increased.
The monsoon was significantly cooler (median maximum temperature 30.7°C vs. 32.3°C, p = 0.01), more humid (median relative humidity 85% vs. 70%, p = 0.0008), and received higher rainfall (median 504.9 mm vs. 0.3 mm, p = 0.0002) than the rest of the year.
Liquid desiccant air dehumidification is a promising dehumidification technology with lower energy consumption, less pollution and more flexible humidity control.
