Preciva Digital Psychrometer Thermo-Hygrometer, LCD Mini Temperature and Humidity Meter with Dew Point and Wet Bulb Temperature Hygrometer for Industry, Agriculture, Meteorology (9V Battery Included) https://www.amazon.com/dp/B071WLDY82/ref=cm_sw_r_apan_glt_fabc_D57AQDADQ358RHBY73ZA?_encoding=UTF8&psc=1
A wet bulb thermometer might help. It'll give you the 'feels like' temperature.
21C and 21% relative humidity feels a lot different from 21C and 78% relative humidity.