Forests play an important role in the terrestrial carbon cycle and deforestation is a key driver of climate change. The manual monitoring of the forest to prevent unauthorized activities is a practically difficult job. There is a need for high-resolution, global forest monitoring tool. The four major operations that are essential in monitoring the forest are developed in this work, namely tree cutting detection, fire detection, landslide detection, and smoke detection using a sound sensor, temperature sensor, vibration & moisture sensor, and smoke sensor respectively. An Arduino UNO microcontroller is used along with the Wi-Fi module to communicate to the forest department. The sensed data from sensors is collected and sent to the authorized department via the Wi-Fi module. IoT has widely used technology in forest monitoring applications. In addition, this paper uses the NodeMCU module through which employees of the forest department can be notified over mobile phones if any sensed data crosses the threshold value.