Russian agroindustrial sector has been actively implementing digitalization and automation of production sites. Production thermometry is considered an important tool for quality control of commercial plant products during storage. The aim of the research was to promptly identify and prevent focal spread of grain contamination throughout the entire batch of commercial products using modern methods of production thermometry. The object of the research was a batch of wheat grain of 2023 harvest with a total mass of 3500 tons loaded into silos of the elevator, control period was 11 months. Monitoring of all temperature sensors and evaluation of temperature fluctuations inside the grain mass was done automatically without human intervention. An operator carried out daily screening and downloaded readings from temperature control sensors onto a personal computer for each silo building. Laboratory studies of grain were carried out in accordance with GOST 13,586.3-2015 “Grain. Acceptance rules and sampling methods”. According to the results of production thermometry after 3 months of storage, focal processes of self-heating of grain mass from 2.6 to 10.8 ℃ were recorded. Laboratory control revealed infestation of grain with grain storage pests of I degree. After measures aimed at elimination of contamination in the grain mass, a unified microclimate (temperature) was established for the whole batch of grain. Repeated increase in grain temperature was recorded at the 11th month of storage. Laboratory test results indicated I degree infection. Production thermometry prevented the temperature of grain mass from increasing at the initial stages of self-heating process, which is important for baking properties of food wheat. Since the increase in grain temperature during storage leads to denaturation of plant protein and reduces the percentage of viability. New data was obtained on the value and effectiveness of elevator operations digitalization for a high-quality grain storage process, which reduced the risks of quantitative and qualitative product losses. Automation of thermometry process limited the contact of elevator employees with negative production factors (grain dust, vibration, etc.).