Radar technology is increasingly recognized as a valuable tool for monitoring aerial insect biodiversity and essential biodiversity variables (EBVs). Radars provide detailed information on the intensity, timing, altitude, and spatial scale of aerial movements, making them particularly suitable for monitoring insects. They can contribute to several EBVs, including species population, species traits, community composition, and ecosystem function. While radars do not always provide taxon-specific data, they can still offer insights into insect abundance, biomass, phenology, flight behavior, and migration patterns. Small-scale biological radars and large-scale weather radars are two main types used for insect monitoring. Small-scale radars offer high precision and can detect individual insects, while weather radars provide broader coverage and can estimate insect movement fluxes. Advances in radar technology, machine learning, and data integration are expanding the potential of radars for biodiversity monitoring. Weather radars, which are already widely available, can be used for standardized monitoring of aerial biodiversity, providing data on insect abundance, biomass, and ecosystem functions. However, challenges remain in data accessibility, standardization, and harmonization of radar data. Despite these challenges, radar-based approaches offer a non-invasive, non-destructive method for monitoring aerial insect biodiversity, which is critical for understanding ecosystem functions and biodiversity changes. The integration of radar data with other monitoring approaches and the development of data infrastructure are key steps towards establishing radar as a standardized tool for insect biodiversity monitoring.Radar technology is increasingly recognized as a valuable tool for monitoring aerial insect biodiversity and essential biodiversity variables (EBVs). Radars provide detailed information on the intensity, timing, altitude, and spatial scale of aerial movements, making them particularly suitable for monitoring insects. They can contribute to several EBVs, including species population, species traits, community composition, and ecosystem function. While radars do not always provide taxon-specific data, they can still offer insights into insect abundance, biomass, phenology, flight behavior, and migration patterns. Small-scale biological radars and large-scale weather radars are two main types used for insect monitoring. Small-scale radars offer high precision and can detect individual insects, while weather radars provide broader coverage and can estimate insect movement fluxes. Advances in radar technology, machine learning, and data integration are expanding the potential of radars for biodiversity monitoring. Weather radars, which are already widely available, can be used for standardized monitoring of aerial biodiversity, providing data on insect abundance, biomass, and ecosystem functions. However, challenges remain in data accessibility, standardization, and harmonization of radar data. Despite these challenges, radar-based approaches offer a non-invasive, non-destructive method for monitoring aerial insect biodiversity, which is critical for understanding ecosystem functions and biodiversity changes. The integration of radar data with other monitoring approaches and the development of data infrastructure are key steps towards establishing radar as a standardized tool for insect biodiversity monitoring.