Leaf wetness duration (LWD) is an important criterion for measurement in agricultural meteorology since it is essential to controlling pathogen infection and development rates of various major crops [2]. As a result, agricultural communities have adopted leaf wetness sensors as a part of crop systems to monitor the duration of wetness resulting from dew, rainfall, or irrigation events[1, 2]. There are several commercially available electronic LWD sensors on the market. Although these systems are robust and highly precise, they are unable to fully mimic the surface properties and wettability of real leaves [3]. Because of these difficulties, accurately measuring LWD to estimate the risk of fungal disease is challenging [4]. To mitigate the issues associated with commercially available leaf wetness sensors (LWS), in this work, I have fabricated an interdigital capacitive sensor insulated with a bio-mimetic polydimethylsiloxane (PDMS) surface.