Printed sensors represent a transformative advancement in sensor technology, utilizing innovative printing techniques to create flexible, cost-effective, and highly customizable sensing devices. Their versatility allows integration into numerous applications across diverse fields such as monitoring a wide range of environmental factors e.g. air and water quality, soil conditions, and atmospheric changes among others. These sensors demonstrate high sensitivity and accuracy in detecting pollutants, temperature variations, humidity levels, and other critical parameters essential for environmental assessment and protection. The adaptability of printed sensors to operate under various environmental conditions expands their applicability, making real-time monitoring feasible in both urban and remote settings. This is particularly valuable in areas where traditional monitoring systems are impractical or too costly to implement, thus broadening the scope of environmental monitoring. Their lightweight and flexible design further enhances their suitability for deployment in challenging environments, including remote and hard-to-reach locations. The integration of printed sensors with wireless communication technologies enables the formation of comprehensive monitoring networks, facilitating continuous data collection and real-time data transmission. These networks aggregate information from multiple sensors, improving situational awareness and supporting data-driven decision-making in environmental management, policy development, and disaster response. Research efforts continue to focus on enhancing the performance of printed sensors, improving their sensitivity, and ensuring long-term reliability. Advances in materials science and printing techniques are driving improvements in sensor capabilities, leading to greater accuracy and durability. This paper provides a comprehensive review of recent developments and challenges in printed sensor technology, discussing their applications in environmental monitoring and highlighting their potential to address pressing environmental issues. By exploring advancements in sensor materials, fabrication methods, and integration with digital technologies, the paper aims to underscore the transformative potential of printed sensors in revolutionizing environmental monitoring practices. Ultimately, these insights contribute to the sustainable management and protection of natural resources, aligning with global efforts to promote a more sustainable future.

Printed Sensors, Environmental Monitoring, Sustainable Technologies, Flexible Electronics Environmental Protection, Materials Science for Sensors